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GERMANY

Valuation of DFB HeadquartersBU

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& T

RAN

S-PO

RTAT

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ANGOLA

River Diversion for Hydropower ProjectW

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SAUDI ARABIA

Conversion to Combined Cycle Power Plants EN

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Offshore Wind Energy Consulting boosts Effectiveness and Efficiency

Information on the Lahmeyer Group No. 60 | October 2015

Lahmeyer is a company of

2

OVERVIEW

Overview

COMPANY03 | Lahmeyer and Tractebel Engineering 04 | Personnel04 | Trade Fairs and Exhibitions04 | Imprint05 | Lahmeyer Tanzania 05 | News

ENERGY06 | Russia: Expertise for District

Heating Pricing07 | Tanzania: Gas Turbine Power Plant 08 | Mozambique: Energy for Growth09 | Dubai, United Arab Emirates: Low

Cost for Clean Energy10 | Uganda: Lahmeyer supports

Project Developers 11 | Germany: Offshore Wind Energy

Acquisitions12 | Morocco: World’s Largest Solar

Thermal Power Project13 | Galapagos, Ecuador: Power from

Jatropha Oil14 | Turkey: Development of Electricity

Carbon Emission Factors15 | Saudi Arabia: Conversion to

Combined Cycle Power Plants16 | Moldova: Rehabilitation of

Transmission Network 17 | Pakistan: Biomass Power Plant of

Fatima Energy

HYDROPOWER & WATER RESOURCES18 | Angola: Successful River Diversion

Laúca19 | Workshops enhance Competence20 | Indonesia: Poko und Bakaru II

Hydropower Projects in Sulawesi21 | Nepal: Lahmeyer Hydropower Project

Tanahu22 | Peru: Napo-Mazan Low-Head

Hydropower Project23 | Turkey: 45 MW Çambaşı Hydropower

Plant 24 | Austria / Switzerland: Bi-national Inn

Hydropower Plant

BUILDING & TRANSPORTATION25 | Germany: Maaßenstraße Shared Zone 26 | Germany: Valuation of DFB’s Existing

Premises27 | Germany: Four-lane Construction of

the A94 Motorway

Dear Readers,

Integration of Lahmeyer into the Tractebel Engineering Group represents a milestone in the history of our company. Following signature of the agreements and closing in late December last year, we are now part of a leading international group of companies.

Our own company’s history shows that in Lahmeyer International we have consistently been able to develop the business successfully. The foundation for this success was laid in 1890, when Wilhelm Lahmeyer established an energy business undertaking the first privately financed power projects worldwide. Wilhelm Lahmeyer was also a co-founder of RWE, which was linked to Lahmeyer for over a century.

In 2006, RWE spun off the engineering business and Lahmeyer International was acquired by Capiton AG The following years were characterized by growth through the completion of numerous major consulting projects around the globe and through our acquisitions in India, Russia, Turkey, the Philippines, and Germany. The years with Capiton were nevertheless an interim phase and in 2014, Tractebel Engineering acquired the Lahmeyer Group. Lahmeyer and Tractebel Engineering, an international engineering company, with headquarters in Brussels – part of the French GDF SUEZ Group, today ENGIE – are well matched to one another.

The two companies complement each other both in terms of our global presence and our range of services, and our common values form the basis for unity: our customer focus and integrity, the quality of our work and the combination of economy and sustainability.

New perspectives and opportunities will be created for us by being part of Tractebel Engineering, a global leader in the energy sector with ambitious growth plans. The alliance of the two companies with complementary competencies of international specialists will offer our clients new possibilities, and joining forces will bring them significant added value.

We look forward to a successful future with Tractebel Engineering and to working with our clients on many challenging projects.

Enjoy some interesting reading!

Dr. Bernd Kordes

3

THE COMPANY

No. 3

Lahmeyer and Tractebel Engineering – Together to the Top

The summed revenues for the international projects of Tractebel Engineering and Lahmeyer put us in a leading position in the international consulting business. (Source: Ranking of international Design Firms of ENR magazine 12/2014).

Combined Strengths for EnergyWe are already working together successfully in the Energy Division, and are well on the way to leading the global market in the energy sector through targeted pooling of our strengths, maximising the potential of our combined personnel resources and capacities, our provision of high quality services and our unique experience and references.

Synergies = Client BenefitThe decommissioning of nuclear power plants in Germany provides an example of how our combined strengths can be positively perceived by our clients. Lahmeyer’s contacts in Germany combined with the expertise of Tractebel’s specialists in nuclear engineering offer important synergies. A further example is our

ability to form strong teams with combined expertise in the area of renewable energies, especially in the wind and solar subsectors.

Infrastructure on TrackTractebel Engineering, Lahmeyer Rhein-Main, Lahmeyer International, and Lahmeyer Hydroprojekt are cooperating in the field of waterway construction as well as in flood and coastal protection projects.

Hydropower brings competitors togetherLahmeyer’s Hydropower and Water Resources Division will in future work together with the Tractebel subsidiary Coyne et Bellier. The two companies, previously competitors, will now join forces, consolidated through Tractebel Engineering, for the benefit of our group and our clients.

Joint Presence at International Trade FairsLahmeyer and Tractebel Engineering are bringing an increasingly unified presence to trade fairs and congresses. An excellent starting point was the EWEA OFFSHORE 2015 trade fair in Copenhagen at the beginning of March, where the wind energy specialists from both companies appeared at a single stand and presented their expanded joint portfolio of services. Both companies have extensive experience in the offshore sector and we have already worked together on some 100 offshore wind energy projects.

The 2015 annual ICOLD (International Commission On Large Dams) conference was held in June in Norway. Specialists from the three companies presented the services of Lahmeyer International, Lahmeyer Hydroprojekt und Hidro Dizayn in the German pavilion, while colleagues from Tractebel Engineering provided services presentations in the French pavilion.

FILDA (Feira Internacional de Luanda) is the most important multi-sector trade fair in Angola. The 32nd fair took place in Luanda, the capital of Angola, at the end of July 2015. Lahmeyer International and Tractebel Engineering were both represented at a professional stand in the German pavilion.

Progress with the integration of the Lahmeyer Group into the organisation of Tractebel Engineering has been continuing since the beginning of the year. Modalities of cooperation and the allocation of competencies among the operative units and the central corporate departments within the group have now been substantially defined and are already being successively implemented.

ENERGYcombined

No. 1

No. 2

HYDROPOWERcombined

FOSSIL FUELS combined

ENERGY TRANS-MISSION AND DISTRIBUTIONcombined

No. 3

4

THE COMPANY

Trade Fairs, Conference and Congress Participation until the end of 2015

Date Event Location Participation

26.-28. October 2015 HYDRO 2015 Bordeaux, France Exhibition Stand 223 / 224

17.-20. November 2015 EWEA 2015 Paris, France Exhibition Stand Hall 1 Stand S09

More information on our trade fair participation is available at www.lahmeyer.de/en/fair-dates

Trade Fairs and Exhibitions

Personnel

Micheal Wünnemann was promoted to the management of the Energy Division of Lahmeyer International on 1 January 2015. The graduate engineer in mechanical engineering has been with Lahmeyer since 1 April 2010.

Bernhard Stabel became a member of the Divisional Management of Hydro-power and Water Resources at Lahmeyer International on 1 April 2015. He is a graduate civil engineer and has been with Lahmeyer since 1991.

Ingolf Hoffmann was appointed as deputy division head of the Energy Division of Lahmeyer International, effective from 1 January 2015. He leads the Privately Financed Projects department since 1998.

Jörg-Peter Albrecht joined Lahmeyer International on 1 April 2015 in Business Development in the Hydropower & Water Resources Division. The graduate mechanical engineer with an MBA has international experience.

Özgür Çiçekdağ is Assistant General Manager of Hidro Dizayn. The civil engineer specialised in water resources joined Hidro Dizayn in 2010 and headed the Final and Detailed Design Group until 2015.

Yuri Istomin was appointed General Director of our Russian group company OOO Lahmeyer International RUS effective from 1 July 2015. Until then Yuri Istomin was Head of Thermal Power Plants at Lahmeyer RUS.

ImprintLahmeyer International’s magazine “aktuell” is published once to twice a year in German and English. Reproduction and electronic dissemination, even excerpts, are only possible upon approval of the editors.Cover pageConsulting for optimisation of sustainable power generation: in the offshore wind turbine sector, clients can benefit from the joint experience of Lahmeyer International and Tractebel Engineering from more than 100 projects.

EditorLahmeyer International GmbHFriedberger Str. 173, 61118 Bad Vilbel, GermanyResponsible: Sabine Wulf, Lahmeyer InternationalArtwork and lithographymagenta Kommunikation, Design und Neue Medien GmbH & Co. KG, Mannheim, GermanyPrintOttweiler Druckerei und Verlag GmbH, Ottweiler, Germany© Lahmeyer International GmbH, October 2015

5

Ngwisa Mpembe – Managing Director of Lahmeyer Consulting Engineers (T) Limited.

Lahmeyer Tanzania dedicated in East AfricaAt the end of last year, the Lahmeyer company in Tanzania was renamed Lahmeyer Consulting Engineers (T) Limited. Together with the new name, the company also received a new logo.

Managing Director Ngwisa Mpembe is looking forward to the future with excitement: “Our company has taken on the task of acting as a platform and an important link for our group for business in Tanzania and East Africa. We will support other subsidiaries actively in all business activities in Tanzania and the neighbouring countries Zambia, Malawi, Uganda, Kenya or Zimbabwe.”

The company was incorporated in 2010, and since 2013 belongs to the Lahmeyer Group. Its head office is in Dar es Salaam. 14 permanent staff members as well as additional freelancers, are employed at 4 project locations. In 2014, they generated a turnover of approx. 800,000 Euro.

Among the clients are ministries and municipal councils, development banks, property developers as well as mines and private companies. Lahmeyer Tanzania enjoys a high repu- tation, and is member of the executive board of Tanzanias association of engineers.

In the last years, the focus of Lahmeyer Tanzania was on water supply and sanitation. Today, the company is becoming increasingly involved in energy projects. In this way, the coope- ration with the experienced energy experts of Lahmeyer International is continuously growing.

Power corner initiative is one such special opportunity where in this unique project we will play a key role and act as a utility company providing

services to the remote parts of Tanzania in off-grid projects.

Modern technologies such as AUTO CIVIL 3D and AUTO CAD are applied for project work. Here again, the recruit-ment of carefully selected personnel is a major challenge. Particular emphasis is placed on the continuous professional development for the staff.

For the future, Lahmeyer Tanzania sees excellent opportunities especially in the energy segment. Due to the stable political situation, the economy in Tanzania is on the path to growth. Moreover, in the light of major gas discoveries, there is great potential for development to exploit these natural resources. Lahmeyer Tanzania is well positioned to play a key role as a local consulting platform company ready to support international sister companies.

A grid capacity of 1,500 MW is presently installed in Tanzania and should be expanded to 10,000 MW in the next five years. Since only 30 % of the population has access to power, in the future this is set to rise to 50 – 60 %. For this purpose, thermal power plants as well as transmission grids are to be built. Rural electrification also provides future business potentials for Lahmeyer Tanzania, as large areas with high power demand are without grid coverage. So far, existing renew-able energy sources have hardly been exploited.

Dr. Bernd Kordes elected to the FIDIC Executive BoardThe CEO of Lahmeyer International Dr. Bernd Kordes was elected to the FIDIC Executive Committee on 15 September in Dubai. The Consulting Engineers Association VBI, with some 2,000 member companies one of the largest consulting associations worldwide, had nominated Dr. Bernd Kordes as a candidate for the election of new members to the FIDIC executive committee. The assembly of mem-bers elected two new members to the executive committee out of five candidates. The Consulting Engineers Association VBI is the German member association of FIDIC. Dr. Bernd Kordes has been active until end 2014 as chairman of the VBI international committee which he will continue to be member of. FIDIC is the International Federation of Consulting Engineers. Its members are national associa-tions of consulting engineers.

Certified Project ManagersEmployees of Lahmeyer Rhein-Main carried out an intensive training course in order to acquire the Certified Project Management Professional (PMP) Certificate. The workshop was conducted by the firm ESI International under the roof of the US American Manage-ment Institute (PMI). Moreover, Lahmeyer Rhein-Main has project management certificates of IPMA and DVP, also accepted worldwide.

Award for Lahmeyer Tanzania In August Lahmeyer Tanzania was presented a 2015 / 2016 Top 100 Mid-Sized Company Award. The award, by KPMG and the leading regional business magazine THE CITIZEN, is given to medium-sized companies with an annual turnover between 1 – 20 billion Tanzanian shillings (approx. 400,000 – 8 Mio. Euro). Lahmeyer Tanzania reached rank 11 among 100 companies. The main criteria are good final performance combined with sustained positive growth.

NEWS

6

ENERGYRUSSIA

Russian heat supply pricing offers little incentive for investment. Many obsolete facilities and grids, however, require modernisation activities. In order to initiate new construction, rehabilitation, and upgrading, it is necessary to change the pricing system. A Lahmeyer study from 2014 forms the basis for this change.

Previous Study as Reference MethodologyThe energy policy is defined by the Ministry of Energy of the Russian Federation. Active support is given by the Non-Profit Partnership “Council for Organisation of Efficient Trading System at Wholesale and Retail Electricity and Power Market” (NPP MC).

In 2009, Lahmeyer International RUS worked for NPP MC, and prepared a methodology for assessment of construction costs for new power

plants. Over the past five years, this elaboration was used as reference methodology in the sector.

The successful study was followed by another order from NPP MC in early 2014: the development of a methodo-logy for Thermal Energy Cost Calcula-tion in Russia based on the “Alternative Heat-Only Boiler Plant” (AHOBP) method.

Incentives by Pricing SystemThe task of the Lahmeyer experts was to determine a Gcal heat price for Russian cities with consideration of local climate conditions, seismicity as well as other specifics for heat supply as well as for residential areas. Attention was given to 10 Gcal/h boilers fired by natural gas, coal or heavy fuel oil. Importance was attached to country-specific standards including all backup types. This new

price is supposed to create an incen-tive for final heat consumers to switch from a centralised district heating system to an independent heat source. Thus, tariffs generated are intended to serve the principles of heat market pricing.

Results are Convincing Lahmeyer International RUS and the specialists of the Thermal Power Plants Department of Lahmeyer International worked closely together, and success-fully completed the study in the latter half of 2014.

NPP MC as the client as well as the Russian Ministry of Energy approved the results of the study. Meanwhile, the Russian Government has obtained the specific pricing improvement method.

The important Work to be ContinuedBoth Lahmeyer teams are further involved in this subject. In the middle of 2015, the update of the work was finalised and the new version of the Report and Calculation Model based on up-to-date prices and changed legislation were published. Lahmeyer International RUS and the Thermal Power Department of Lahmeyer International currently develop cost investigations for heat distribution in the Russian grids. Lahmeyer Inter-national RUS also performs some practical modelling and calculations for Russian clients operating heat supply systems in some cities.Viktor Istomin

Expertise supports Changes in District Heating Pricing Lahmeyer International RUS, LLC in cooperation with the Thermal Power Plants Department of Lahmeyer International developed a methodology for Thermal Energy Cost Calculation in Russia. The objective of the study is to facilitate transition of the Russian district heating sector to the current market conditions, and promotion of new technologies.

Heat-only boiler plant for district heating.

7

TANZANIA

Panoramic view of the K-I construction site in Kinyerezi, Dar es Salaam, Tanzania.

The Government of Tanzania has established the Big Results Now (BRN) initiative in order to secure, inter alia, sustainable future energy supplies. The primary aim is to phase out high cost emergency rented power plants and to increase the generation capacity to 2,260 MW. Furthermore, TANESCO’s operations regime shall be reformed and adapted to meet the new demands. The measures include for example the development of new natural gas resources and mini off-grid systems for renewable energies. Recent gas discoveries have quadrupled Tanzania’s known resources.

Turnkey ProjectAs time runs short, the new power plant should be built and installed on turnkey basis at the earliest possible time. TANESCO decided to locate the plant at the Kinyerezi power generation complex. This complex develops into an important facility in Tanzania’s future power supply. Kinyerezi is located on the outskirts of the country’s largest city Dar es Salaam.

Dual-Fuel PlantThe power plant is a gas turbine power plant with all necessary balance of plant systems. The plant is able to utilise both gaseous fuel (natural gas) and liquid fuel (Jet-A1). The grid connection is to TANESCO’s 132 kV system as well as to the 220 kV system.

General Electric (GE) Industrial Aeroderivative Engines Inc. of USA supplied the four LM6000 PF dual- fuel gas turbines. A Norwegian EPC contractor is responsible for the engineering, erection and commis-sioning of the entire power plant.

Wide Range of ServicesLahmeyer International was assigned by TANESCO to provide design review and approval, factory acceptance test participation, site supervision and training to TANESCO staff. The project is scheduled to be handed over to TANESCO at the end of the third quarter of the year 2015.

Future ProspectsTANESCO is planning to extend the power plant directly after the comple-tion of phase 1 (K-I) by another four gas turbines of the same type.

In parallel, the neighbouring project K-II will commence. This project is a 240 MW gas turbine combined cycle power plant that will connect to the 220 kV system and to the new 400 kV system. Lahmeyer is foreseen to continue its successful partnership with TANESCO at those projects.

In addition to that, Lahmeyer, on behalf of TANESCO, performs studies, basic design, factory acceptance tests, and site supervision for a new gas insulated 400 kV switchgear to be located within the Kinyerezi power generation complex.Michael Duerr

Gas Turbine Power Plant in Dar es SalaamTanzania faced an acute power shortage in the recent years. Electricity is becoming noticeably scar-cer. Therefore, Tanzania Electric Supply Company (TANESCO) implements a new 150 MW gas turbine power plant. Lahmeyer International gives advice to the client from phase I of the project until com-missioning of the new plant.

8

ENERGY

The economic development of Mozambique is moving ahead rapidly. This is why energy demand is increasing rapidly. According to the World Bank’s latest data, only 15 % of Mozambique’s population has access to electricity. Significant investments in the energy sector are necessary. These include rehabilitation and modernisation of old facilities just as well as new construction. Lahmeyer International provides consulting services for projects in the port city of Nacala and in the capital of Maputo. The specialists prepared a pre-feasibility study for a combined cycle power plant and accompany the conversion of a thermal power plant.

They have conducted a pre-feasibility study for the project in a professional, efficient and timely manner, and submitted the results as report to the client on schedule.

Maputo: Conversion to Natural GasA power plant facility in the capital of Maputo also receives support from Lahmeyer. The Central Termica Maputo (CTM) is owned by EDM. For cost reasons, two of the three gas turbines which are installed in the power plant shall be converted to burn natural gas instead of diesel, and in 2015, they will be connected to a newly constructed gas pipeline. Additionally, it is intended to modernise the installed I&C system.

In 2013, Lahmeyer International and its local partner Tecnica Engenheiros Consultores LDA, were contracted as an independent consultant for conversion of blocks 2 and 3.

The specialists assessed the current status and prepared the technical tender documents. They will support

EDM in contract negotiations and provide supervisory services during the EPC phase. Finally, they will manage the handover of the plant to the operating personnel of EDM. Since May 2015, EDM focussed on other strategic targets, so CTM project was postponed.Dieter Gessner, Piotr Sputo

MOZAMBIQUE

New Energy for Economic Growth

Mozambique is part of the Southern Africa Development Community (SADC). After its independence from Portugal in 1975, Mozambique was one of the world’s poorest countries, but during the last twenty years has emerged as one of the fastest growing economies. Due to the growth in construction, agriculture, and energy sectors, the gross domestic product (GDP) growth rate is expected to be 8 percent during the period from 2016 to 2018.

Nacala: Power Plant in the Industrial AreaNacala will develop to an economical centre in northern Mozambique. Investments are underway, such as the New International Airport, Airport City Development, a coal export terminal as well as manufacturing industries. Demand for electricity is growing. The current capacity of the local electricity network is however limited. A solution to meet the projected energy demand could be through the development of the local generation system.

Odebrecht Mozambique and Mitsui & Co., Ltd. have been jointly studying the possibility of a private power generation project in Nacala. The intention is to build a 240 MW combined cycle power plant close to harbour and airport. Preliminary discussions with the state- owned electricity company, Electricidade de Mozambique (EDM), have been commenced for future collaboration. In order to facilitate development of the project, Odebrecht and Mitsui assigned a consortium consisting of Lahmeyer International and the Japanese Oriental Consultants Co., Ltd.

Unit 2 of CTM power plant in Maputo shall be converted from diesel to natural gas as well as unit 3.

In Nacala, a new combined cycle plant should help cover the in-creasing demand for electricity.

9

DUBAI, UNITED ARAB EMIRATES

The production capacity of the Mohammed bin Rashid Al Maktoum Solar Park will be increased from 100 MW to 200 MW in the second expansion phase. HE Saeed Mohammed Al Tayer, MD and CEO of DEWA, announced this during a press confe-rence held in January 2015 in Dubai.

Phase II of the park includes a photo-voltaic system with thin-film PV modules based on an IPP project approach, and will be operational at the latest in April 2017.

The objective is to increase the capacity of the plant to 1,000 MW by 2030 with a planned cost of 12 billion AED. By 2020, solar energy will account for one percent of Dubai’s total energy produc-tion, and for five percent by 2030.

This project will be realised in align-ment with the Green Economy for Sustainable Development initiative launched by HH Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai.

Partner of DEWA Phase II is one of the largest internati-onal projects of its kind. It will occupy an area of 4.5 square kilometres, and help to achieve an annual reduction of 250,000 tons carbon emissions.

A consortium led by ACWA and TSK won the bidding competition for selection of the IPP partner. They offered a low Levelised Cost of Energy of approximately 5.85 USD cents/kWh. In March 2015, DEWA signed a Power Purchase Agreement (PPA) as well as a Shareholder Agreement with the consortium.

DEWA commissioned a consortium led by KPMG, as financial consultant, Lahmeyer International, as technical consultant, and Norton Rose Fulbright, as legal consultant for assistance on the IPP process. Lahmeyer designed the plant, prepared the tender documents, evaluated the submitted bids, and assisted in contract negotia-tions for financial close.

Know-how accompanies the ProcessIn response to its open request for qualification, DEWA received 49 qualification documents for the Phase II Project. 24 qualified developers were shortlisted for the second phase

of the bid. Ten proposals were received from consortia formed by the world’s leading power companies. The bid submitted by the winning consortium was the lowest recorded price received for a solar photovoltaic IPP project.

The whole process benefitted from the long-term know-how of Lahmeyer. The energy specialists have already been involved in most of the salient renewable energy projects in the region as Technical Adviser and Owner’s Engineer. This applies for example to the 100 MW Shams 1 CSP IPP project and to the 100 MW Noor One PV IPP project in Abu Dhabi. Samuel Karres, Camilo Varas

Low Cost for Clean EnergyPhase II of the 200 MW Mohammed bin Rashid Al Maktoum Solar Park: The first large-scale PV IPP Project in the region achieves the lowest Levelised Cost of Energy on the international PV market. Lahmeyer International assisted the Dubai Electricity and Water Authority (DEWA) as Technical Advisor for the project.

Aerial view of DEWA’s 13 MW Pilot Photovoltaic Power Plant Project (Phase I).

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ENERGY

Lahmeyer International supports Project Developers in UgandaThe Uganda Energy Credit Capitalisation Company (UECCC) promotes investments in the renewable energy sector in Uganda with support from KfW. Under the programme “Early Stage Transaction Advisory Services”, the UECCC follows the new approach to bring together government resources, investors, and development aid partners, such as KfW. UECCC especially provides financial, technical and logistical support in order to promote project development. Lahmeyer’s task is to deliver technical assistance on behalf of UECCC.

For this purpose, a package of eight services was developed, ranging from the preparation of pre-feasibility studies, through validations of existing studies, up to marketing assistance. Project developers may apply for a unique package of services appropriate to them. It is the objective of UECCC to promote ten projects within three years with the assistance of Lahmeyer International. These projects should come from the areas of small hydro-

power, biomass, wind, and / or photo-voltaics. The capacity of the projects is between one and 20 MW. Up to now, the development of two small hydro- power plants as well as the completion of a biomass power plant were brought forward. Currently, Lahmeyer is preparing a pre-feasibility study for a second biomass project located in the North of Uganda. A workshop for project developers in Kampala was also part of the programme.

UGANDA

For this project, Lahmeyer International cooperates with ERM (Environmental Resources Management) for environ-mental impact and social aspects of the studies, and with Lahmeyer Hydroprojekt for small hydropower plants. Lahmeyer has been selected for this programme since all fields of project development for the relevant renewable energy technologies can be comprehensively covered from a single source, and experience in IPP projects are available in-house. In addition to this, Lahmeyer is also active in Uganda with other projects, and has already gathered country-specific experience, for example for grid connection and cost calculations.

The importance of the programme lies above all in the diversification of the country’s power supply through the use of the existing renewable energy resources. UECCC utilises a young and motivated team being aware of its responsibility for the development of Uganda. The cooperation within the consulting teams at different Lahmeyer sites (Bad Vilbel, Neu-Isenburg, Munich) runs smoothly as well as communication with the client and KfW. This succeeds by focussing on one core team for project development which is available for UECCC as a client and as a constant contact for the project developers.Robert Müller

As an example for one of the projects within the framework of the funding programme is the evaluation and modification of the environmental impact assessment study for a bagasse plant. The image shows an inlet channel of a wastewater treatment plant of a sugar factory with adjacent bagasse co-incineration plant in Kaliro District in East Uganda.

Site visit in June 2014 at Lower Nsongya River in the Western Nile Region in Uganda.

11

GERMANY

Three substantial pre-requisites are decisive for the success of an offshore wind energy project: Firstly, earnings resulting from wind yield and energy production, and secondly, realistic cost assumptions on fixed CAPEX and volatile OPEX along project lifetime. And finally overarching contractual, commercial, technical, and manage-ment requirements.

Under these conditions and with direct respect to the overall commercial sensitivity, Lahmeyer International recently examined several projects.

Detailed AnalysesIn this way, Lahmeyer validated projects by detailed calculation of energy yield assessments. Here, the focus was on wake losses, overall efficiency, respective uncertainty assessment, and sensitivity against different O&M strategies.

Moreover, the Lahmeyer experts verified the investment costs, (CAPEX), and reviewed operating costs (OPEX) assumptions in detail. A respective commercial sensitivity analysis with respect to both overall OPEX and energy yield complemented the investigations.

Within the review of wind turbine technology, the assessment of expected (and probable extension of) useful lifetime of WTG components were, among others, of primary importance. Suitability and commer-cial potential of the offshore wind farm specific Condition Monitoring System were also examined. Further-more, Lahmeyer analysed the feasibility of the expected technical requirements for the project in consideration of the contractual interfaces and the individual warranty obligations of the suppliers.

Other major topics were the clarifica-tion of the owner’s and / or investor’s risk exposure from permission status, and the technical project concept with focus on predictability of the construc-tion process.

For this purpose, Lahmeyer reviewed EPC contracts for turnkey delivery as well as service agreements for the operation phase. The overall project schedule as well as the management structures during construction and operation were also subject to verification.

Based on these analyses, the Lahmeyer experts highlighted the commercial project opportunities which can be fostered by the owner and his operational manage-ment service provider during the operation phase.Dr. Patric Kleineidam, Manfred Gose

Lahmeyer as Technical Advisor for Offshore Wind Energy Acquisitions In the past year, Lahmeyer International continued to support project owners and investors in the field of European Offshore Wind. In addition to Technical Due Diligence audits Lahmeyer delved into selected issues with respect to project specifics and client’s particular demands.

Loading of offshore wind energy components for the project Baltic 2. Lahmeyer experts at examination works for the Offshore Wind Farm Baltic 1.

12

ENERGY

Technical Advisory Services for World’s Largest Solar Thermal Power Project

MOROCCO

Morocco pursues the ambitious target to establish a solar power capacity of 2,000 MW by 2020 that will represent 14 % of the country’s total electrical power. This will contribute to the reduction of the reliance on conventio-nal energy, minimise the emissions of greenhouse gases, and have a positive impact on climate change. Morocco is currently 95 % dependent on oil.

In 2009, King Mohammed VI presented the solar energy project in Ouarzazate, the first one to be implemented under the Moroccan Solar Plan. The construction project will save an estimated value of 1 million tons oil equivalent per year, and avoid the emission of 3.7 million tons of CO2.

The first solar power plant Noor I is currently under construction in Ouarzazate complex. The 160 MW parabolic trough plant is under commissioning, the full operation is set for this year. With an annual

energy generation of more than 500 GWh, it will cover the energy consumption of 1 million private households.

Noor II and Noor IIIIn early 2013, the Moroccan Agency for Solar Energy (MASEN) appointed Lahmeyer International as technical advisor for the tendering of the following two plants within the complex: Noor II, a 150 – 200 MW parabolic trough plant with as well Noor III, a 100 – 150 MW solar tower plant.

The Lahmeyer team manages and supervises the entire technical process, prepares the tender documents, evaluates the tenders received in a technical regard, and assists in contract negotiations and contract award.

The power plants will comprise some of the largest CSP facilities in the world when completed. Coupled with

the thermal energy storage, the solar energy will be fed into the Moroccan grid.

Noor II and III power stations will have a storage capacity of 5 and 7 hours of production when operating at full capacity. This improves the flexibility of the plant output into the energy mix, especially during peak periods.

Moreover, the Noor II and III power stations will use dry cooling systems what should generate annual water consumption savings of around 3.6 million m³.

Lahmeyer International has concluded the technical evaluation of the proposals, assessed the tenderers for suitability with regard to the technical requirements, and assisted MASEN until contract award. In addition, the Lahmeyer experts investigated combined solutions for the offered two different solar power plants.Alexander Stryk, Alex Loosen

The world’s largest solar thermal power plant complex is being built near Ouarzazate. An investment volume of around 2.3 billion Euros is estimated for the 500 MW Phase One Solar Energy Project. Lahmeyer International acted as Owner’s Engineer during the tendering process of two plants.

13

GALAPAGOS, ECUADOR

Preservation of Galapagos Islands’ unique fauna is a compelling reason to use renewable sources for power generation in future.

Hybrid Power Plant on the Galapagos Islands – Power Generation using pure Jatropha Oil

The Galapagos Islands are a protected ecosystem designated by the UNESCO as a biosphere reserve and world heritage. One of the main threats to this fragile ecosystem comes from fossil fuel generating equipment (e. g. CO2 emissions and fuel spillages) operating on the main islands.

In 2001, the oil tanker “Jessica” had an accident close to the islands resulting in 145,000 gallons of fuel being spilled and causing the death of 10,000 marine iguanas and other species. In 2014, another less severe ship accident occurred. Both accidents highlight the vulnerability of the islands.

The Ecuadorian Government’s policy ‘Zero Fossil Fuels on the Galapagos Islands’ was initiated in 2007 and aims to fully convert the archipelago’s energy supply to renewable energy sources.

One of its main objectives is to replace diesel fuel for thermal electricity generation with pure vegetable oils extracted from Ecuador’s native plant, Jatropha Curcas, which is grown and harvested on the mainland (Manabí). In addition, hybrid power plants powered by solar and wind energy will be constructed on the islands.

The first hybrid plant featuring a PV plant and two Jatropha-fuelled 70 kWel generating sets was designed and installed on Foreana by a German company and commenced commercial operation in 2010.

Ambitious TargetsThe project on Isabela Island will show that 100 % renewable power supply is feasible. Ecuador’s Ministry of Electricity and Renewable Energy (MEER) engaged Lahmeyer International to provide services as Owner’s Engineer for the implementation and perfor-mance evaluation of a hybrid power plant project on Isabela Island.

The plant will replace an existing diesel power plant, and will feature five 325 kWel Jatropha-fuelled genera-ting sets. Additionally, the hybrid system is comprised of a 920 kWp PV plant, a 660 kW battery bank, and two battery inverters.

The project firstly targeted improving energy efficiency on the demand side, including energy use in households. Secondly, fossil fuel consumption is to be greatly reduced.

The increased use of renewable energy should be further facilitated by operation of a bank of batteries and grid-forming battery inverters. The target is to achieve diesel-free operation of the hybrid system when the sun is shining.

Lahmeyer designed the entire hybrid system and all respective systems, prepared the tender documents and assisted the ministry in the tendering process and contract negotiations. The EPC contract is expected to be awarded in 2015. Lahmeyer will also supervise construction and monitor the system’s operation and performance during the guarantee period.

ELECGALAPAGOS, the islands’ power utility, will operate and maintain the hybrid plant.Samuel Karres

Ecuador’s ‘Zero Fossil Fuels on the Galapagos Islands’ policy aims to gradually convert the archipelago’s energy supply to renewable energy sources by 2020. Ecuador’s Ministry of Electricity and Renewable Energy commissioned Lahmeyer International to provide services as Owner’s Engineer for implemen-tation of a hybrid power plant on Isabela Island.

14

Structure of the electricity carbon emission model.

Development of Electricity Carbon Emission FactorsThe European Bank for Reconstruction and Development (EBRD) commissioned Lahmeyer International with the development of the carbon emission factors for the Turkish power generation system. Lahmeyer’s energy experts have already analysed the power generation systems of Russia, Bosnia and Herzegovina, Serbia, Kazakhstan, and the Ukraine regarding the current situation and the expected future development of power generation, the use of primary energy sources, and the emissions of CO2.

The first project within the framework of the Development of Electricity Carbon Emission Factors started in 2009. At that time, the focus was on the integrated electricity systems of Russia, comprising regional subsystems with more than 700 fossil-fuelled thermal power generation units.

The objective of the current assign-ment is to compute reliable electricity carbon emission factors for Turkey, including a forecast of the develop-ment up to the year 2022. Lahmeyer’s experts from the Energy Economics and Planning Department worked closely together with specialists of the Thermal Power Plants Department.

A baseline scenario to derive future activities for emission reduction projects will be prepared on the basis of the values determined, as the EBRD envi- sages financing a large number of investment projects that will lead to energy efficiency improvements. This includes projects that generate electricity from renewable energy sources as well as projects that improve the efficiency of transmission and distribution of electricity. In addition, projects that reduce electri-city consumption at the end-user level will be considered.

Project Work in three StepsThe current project was divided into three work packages.

Package I deals with the analysis of load forecasts, consumption patterns, and technological characteristics of the existing power plants as well as with the expected development of the power generation system during the

next decade. Subsequently, within the scope of work package II, Lahmeyer applies its in-house Power System Simulation Model (PSSM) to simulate the operation of the future electricity system. The model computes the operation of power plants taking into account substantial system restric-tions, such as “must-run” power generation units, minimum reserves as well as fluctuating primary energy sources (e. g. hydropower).

Having simulated the annual genera-tion and the specific fuel consumption of fossil-fuelled power generators, the respective carbon emission factors can be derived in the next work package in accordance with requirements of the United Nations Framework Convention on Climate Change (UNFCCC).

TURKEY

Capacity BuildingAs in the previous activities a capacity building component is included in the Turkey project.

Lahmeyer experts presented the general approach to the Ministry of Environment and Urbanisation, which acts as National Focal Point of the Republic of Turkey under the UNFCCC.

In workshops lasting several days the responsible counterparts of the Ministry are trained to apply the system simulation tool. Future trends in the developments of the power sector can easily be integrated to demonstrate the impact on the level of CO2 emissions.Dr. Alexis Bonneschky, Philipp Eckert, Achim Schreider

ENERGY

Ex-ante-Berechnung der Generierungsdaten

Annahme über künftige Entwicklungen

KraftwerkseigenschaftenLastentwicklung

WartungssimulationVerteiler

Ex-ante (Simulationsergebnisse)Ex-post (Benutzereingabe)

Ex-ante (Simulationsergebnisse)ODER Ex-post (Benutzereingabe)

Ex-post (Benutzereingabe)

Ausgangsjahr Generierung der Eingabedaten

Berechnung des Emissionsfaktors

Verteilersimulation

Modell für den Betrieb der künftigen Elektrizitätssysteme (PSSM)

Berechnungsmodell für Kohlendioxidemission (CECM)

Calculating Ex Ante Generation Data

Assumption forFuture Developments

Power Plant CharacteristicsLoad Development

Maintenance SimulationDispatch

ex ante (Simulation Results)ex post (User Input)

ex ante (Simulation Results)OR ex post (User Input)

ex post (User Input)

Base YearGeneration Input

Emission Factor Calculation

Dispatch Simulation

Power System Simulation Model (PSSM)

Carbon Emission Calculation Model (CECM)

15

Development of Electricity Carbon Emission Factors

Ten power plants are converted at nine locations. Limited space conditions require tailor-made solutions.

Specific Solutions for the Conversion to Combined Cycle Power PlantsTen simple cycle gas turbine power plants shall be converted to combined cycle in Saudi Arabia. Owner and operator is the Saudi Electricity Company (SEC). Lahmeyer International prepared tender specifications for the conversion works.

The project, which was started in November 2012 and is expected to be completed this year, comprises nine locations within the Kingdom of Saudi Arabia. The existing gas turbines in the power plants operate in simple cycle with natural gas, diesel, and crude oil. A total of 71 turbines currently generate an electric power output of 4,550 MWel at reference site conditions (RSC) of 45°C. The conversion to combined cycle aims to increase the capacity by an extra 2,270 MWel.

Lahmeyer developed technical concepts and equipment arrange-ments optimally adapted to the site-specific conditions. The limited space available for the new facilities was one of the biggest challenges. By means of tailor-made designs – such as bended flue gas ducts or auxiliary equipment arranged on elevated platforms – the Lahmeyer team pro- vided optimal solutions despite the

limitations of the environment. Plan and elevation view drawings as well as three-dimensional view drawings from different directions vividly illustrated the proposals. Especially the 3-D view drawings facilitated a better under-standing of the arrangement within limited space.

Individual Concepts preparedThe project work included the specification of the heat recovery steam generators, steam turbine generators, air-cooled or seawater-cooled condensers, and Balance- of-Plant equipment. A specific focus was put on the selection of suitable and resource-saving cooling concepts.

Workshops with suppliers helped to find solutions with low water con- sumption at high ambient temperatures of up to 50°C. Based on the specifically developed technical arrangement

and layout concepts, Lahmeyer International prepared the particular tender specifications for the ten power plants. In addition, Lahmeyer reviewed and updated the general technical specifications, valid for all kinds of SEC power plant projects. They are the underlying basis for all the particular tender specifications.

During the tendering phase, the Lahmeyer specialists supported SEC in the answering and handling of clarifications and addenda. Moreover, they assisted the client in the evaluation of the bids as well as in the negations with the potential contractors.

Four of the conversion projects have already been tendered. For two of the projects, design work and site prepa-ration has started and the work is proceeding well.Erwin Thorwarth

SAUDI ARABIA

16

MOLDOVA

Moldova will strengthen its links with the European electricity system, and integrate its own transmission grid into the European Network of Trans-mission System Operators for Electricity (ENTSO-E).

The country is member of the Energy Community Treaty (ECT), and together with the Ukrainian Transmission System Operator, has applied for ENTSO-E membership. This will require synchro-nisation with the ENTSO-E-grid.

Enhance Energy SecurityAssociation with ECT and ENTSO-E will allow Moldova to be part of the internal energy market of Europe, diversifying its sources of supply and increasing its energy security.

To implement this strategy Moldova is embarking on a series of invest-ments. These include interregional connections as well as rehabilitation of its internal transmission system.

Achievement of European StandardsThe total cost of the project accom- panied by Lahmeyer is about 40 million Euros, and includes design and rehabilitation of a number of substations and transmission lines. The aim is to improve security of the transmission network and energy efficiency.

The Project is cofinanced by EBRD and EIB, providing a total of 33 million Euros on a 50/50 share basis.

The complete project is substructured into four tenders: In addition to the exchange of twelve transformers and a shunt reactor in several substations, the reconstruction of 110 kV switch-gears as well as the replacement of 33 kV and 11 kV switchgears is also part of the tasks. Moreover, several 110 kV overhead lines are to be rehabilitated.

Implementation UnderwayThe particular challenge of this project is to manage the transition from Russian Standard technology to Western Stan- dards, including fulfilment of environ-mental requirements of European Banks.The first three tenders have already been published; the implementation phase started in spring 2015.Robert Graefen

Consulting Services for successful Transmission Network RehabilitationIn September 2013, Lahmeyer International started as technical consultant to provide assistance to the state-owned Moldovan transmission system operator Moldelectricas (ME). The objective was to ensure the successful rehabilitation of the energy transmission network in accordance with the financing bank’s requirements.

ENERGY

17

PAKISTAN

With a capacity of 2 x 60 MWel, the plant will serve to expand the sugar production capacity of the operator, Fatima Sugar Mills Ltd. (FSML). The two grate-fired boilers, each providing steam for a single-stage turbine, will use primarily local fuel in order to generate the energy. This fuel is bagasse, a residue created in the processing of sugar cane.

Outside the sugar producing season, imported coal will be used to fire the boilers.

During the sugar season, the plant will not only produce electricity but also process steam for the sugar production process. The generated electricity will be fed into Pakistan’s national power grid.

Utilising Synergy EffectsConstruction of the new plant in the immediate vicinity of the existing sugar mill has numerous advantages. In addition to the land available on the FSML site, the infrastructure of the existing plant can also be utilised.

And the new project will also benefit from synergy effects thanks to joint management teams and the common use of the operation and maintenance resources as well as the administrative resources.

Major components of the plant are being manufactured by renowned international companies and are to be designed, installed and commissioned by a Chinese EPC contractor in cooperation with local companies.

Experienced InvestorsThe new power plant is being developed by the project company Fatima Energy (Private) Ltd., which is based in Lahore, Pakistan. This company is a wholly-owned subsidiary of the Fatima Group. Some 250 million US dollars are being invested in the new plant.

Lahmeyer has been appointed by the financing institutions, a syndicate comprising renowned Pakistani banks led by the Habib Bank Ltd. (HBL), to support project implementation.

Lahmeyer International has subcontrac- ted the Pakistani partner Renewable Resources Ltd. (RE2) to provide the requisite local support.

Wide-ranging TasksIn the project development phase, Lahmeyer performed a technical due diligence review in the role of Lender’s Engineer. Qualified staff initially reviewed the feasibility of the project.

Over the next two years, Lahmeyer will be responsible for monitoring construc- tion, testing and commissioning of the new plant.

Thereafter, the qualified team will supervise the new plant’s first year of operation through to 2017.Dieter Gessner

Energy from local Resources: Fatima Energy’s Biomass Power PlantIn 2016, a new biomass power plant will be connected to the power grid in the Muzaffargarh district of Pakistan’s Punjab Province. It is being implemented as an Independent-Power-Producer (IPP) project and will be built on the site of a sugar mill. Lahmeyer International is an advisor to investors within the scope of a due diligence review. Specialists from Lahmeyer will also be providing consultancy services during the phases of installation, testing and commissioning.

18

Angola is a country undergoing change and experiencing strong economic growth. In recent years, the government has invested heavily in infrastructure and electricity supply. This is in response to a forecasted five-fold increase in the required generating capacity from 1,400 MW in 2013 to 7,200 MW in 2025. In order to meet the steadily increasing electricity consumption, the government is aiming to increase the installed capacity to 9,900 MW by 2025. Much of this increase should come from hydro-power plants on the Kwanza River. Lahmeyer’s hydropower expertise is supporting this growth with specialised know-how.

Successful River Diversion for the Laúca Hydropower Project

ANGOLA

HYDROPOWER & WATER RESOURCES

It is envisaged that 7,000 MW of the planned capacity by 2025 will be generated on the Kwanza, the country’s largest river, where the Capanda (520 MW) and Cambambe (currently being extended to 960 MW) plants are already in operation.

Doubling of Angola’s CapacitySome 35 km downstream of the existing Capanda Plant, the Ministry of Energy and Water (MINEA) has started construction of the Laúca Hydropower Project. With a 132 m high dam and an installed capacity of 2,067 MW, this project of the Angolan Government is presently one of the largest hydropower projects in Africa.

When Laúca goes into commercial operation in 2017, it will more than

double the present generating capacity in Angola. This highlights the project’s huge significance. Upon completion of investigation of the project, MINEA awarded contracts for construction in two lots. River diversion has created conditions for the sub- sequent construction of the dam. Consistent with the site conditions, diversion was achieved through tunnels.

River DiversionThe Kwanza has been diverted through two horseshoe-shaped tunnels, each with an internal diameter of 14 m. In total, 1,021 m of tunnels were excavated by drill-and-blast. The diversion capacity is 4,337 m³/s.

The preparatory works (deforestation and clearance of the site, construction

of access roads, erection of construction facilities) commenced in May 2012. Breakthrough of the first tunnel ensued in February 2014; the second tunnel followed in March 2014.

Each of the two intakes contains gate slots to facilitate closure for reservoir filling. A total of 16,000 m³ of structural concrete and 1,700 tonnes of steel reinforcement were placed. Excavation of both tunnels proceeded simultane-

Overview of the construction site with diversion tunnels intake and outlet, foundation and right abutment of the roller compacted concrete dam.

Diversion tunnel intake.

19

Workshops enhance international competence

Employees from different Lahmeyer Group companies meet to exchange their experience.

New expertise, cultures and contacts have contributed to the Lahmeyer Group’s continuous growth over the past few years. In order to exchange experience and know-how among Lahmeyer Group companies, the Hydro- power and Water Division of Lahmeyer International is organising internal workshops. The workshop series was initiated at Lahmeyer’s head office in

Bad Vilbel in November 2014 and will be continued this year. The first work- shop was dedicated to the requirements of clients and donor organisations for pre-qualification and submission of pro- posals. The two-day workshop facilitated an animated exchange of know-how and experience between employees of Lahmeyer International, Hidro Dizayn and Lahmeyer Hydroprojekt.

Certain countries have rigorous require- ments with regard to pre-qualification documents. For example, in addition to specified content, there are often prescribed formats specific to individual clients or donor organisations. The workshop focused on those documents most frequently required. These ranged from basic documentation such as the company profile and financial state-ments to quality management and compliance documents.

According to Bernd Metzger, Director of Sales in Lahmeyer International’s Hydropower and Water Division, “The workshop offered the chance to exchange experience and knowledge so that our clients in all regions can benefit from our high level of expertise.” Karin Scherer

Inauguration of the river diversion by the President of the Republic of Angola, José Eduardo dos Santos.

ously by heading and benching. Rock support was provided by steel-fibre-reinforced shotcrete and rock bolts. Due to the poor local geology, additio-nal steel mesh supports were placed in vicinity of the intake and outlet portals.

On 4th September 2014, the Angolan president José Eduardo dos Santos ceremoniously opened the cofferdam, diverting water into the tunnels for the first time. A major milestone was thus achieved in Angola’s investment planning.

Engineering ServicesAlready in preparation of construction of the river diversion, Lahmeyer International reviewed the feasibility study and assisted the client, MINEA, in awarding the construction contract.

During construction of the diversion tunnels, Lahmeyer reviewed the construction drawings and supervised all activities of the Brazilian contractor.

As construction of the main works started simultaneously in July 2013, construction of the first part of the river diversion represented a major logistical challenge.

Access roads were used simultaneously for construction of both the river diver- sion and the main works. Delays in the delivery of materials had to be avoided. Further, interfaces between the two parts of the project had to be coordinated.

As a member of an international consortium, Lahmeyer was contracted for the design review and supervision of the construction of the dam and powerhouse, including the electro-mechanical equipment. Scheduled for 2017, commissioning is the next major milestone in improving the electricity supply in Angola.Dr. Jürgen Horn

20

INDONESIA

HYDROPOWER & WATER RESOURCES

Lahmeyer International is helping Indonesia’s state-owned electricity company, PLN (Perusahaan Listrik Negara), to develop hydropower plants on Sulawesi Island. The Poko Hydro-power Project will add some 160 MW capacity to the region’s generation system. Together with extension of the 250 MW Bakaru Hydropower Plant, Poko is part of a plan to further exploit the hydropower potential of the Mamasa River.

By Order of PLN and KfW Development BankIn the autumn of 2014, Lahmeyer International in association with Newjec from Japan and Connusa from Indonesia was awarded a contract by PLN to provide engineering services for this hydropower expansion. The contract is financed by the German

KfW Development Bank. The services include a review and update of existing studies; definition of the optimum development of the two projects as a cascade, and evaluation of the technical and economic viability.

The services are being performed in three main packages: (i) site and conceptual study, including hydrologi-cal analysis and an energy market and system study; (ii) geological investiga-tions and optimisation studies, and (iii) design and evaluation of the recommended cascade development, verifying its economic and financial feasibility.

Lahmeyer completed the first package already by the end of 2014 when the experts finalised the site and concep-tual study for Poko and Bakaru II

Hydropower Plants. The energy market and system study established the basis for the subsequent optimisation study and assessment of the financial merits of the projects.

Prospect for Energy from Domestic SourcesWhile in the future new coal-fired steam turbines and gas-fired com-bined cycle plants are expected to satisfy base load, flexible power generators are required to satisfy peak and intermediate load require-ments.

Lahmeyer expects that the Poko and Bakaru II Hydropower Projects will contribute to the medium- and long- term power supply, utilising water as a sustainable domestic energy source which is an extremely flexible source of primary energy due to the storage potential of hydropower plants.

Hydropower plants can respond quickly to variable demand. They also provide reserve capacity which increases system stability while allowing operation of existing thermal plants with improved efficiency.

With very low operating costs and a long lifetime compared with other power generating options they reduce power generation costs within the overall supply system.Dr. Alexis Bonneschky, Dr. Jörg Grossmann

Poko and Bakaru II Hydropower Projects in SulawesiThe supply of affordable electricity is the objective of sustainable development of the power sector in Indonesia. Consequently, the government has banned the use of expensive imported diesel fuel for new power plants and is focussing its planning on the use of domestic energy sources. In this regard, Lahmeyer is providing engineering services for development of a new hydropower plant (Poko) and extension of an existing plant (Bakaru).

Project area on Mamasa River in Southern Sulawesi.

21

NEPAL

Crossing Seti River. Paddy field in project area.

New Lahmeyer Hydropower Project in Nepal –Large Reservoir to Secure Power SuppliesThe first major storage-type hydropower project in Nepal is planned to be constructed west of Kathmandu at Tanahu. It will substantially increase the firm capacity of the national generation system, and thus stabilise electricity supplies. Lahmeyer International will be providing guidance and support to the project over a twelve year period. The Asian Development Bank (ADB) is financing 100 % of these consulting services.

The hydrological and topographical conditions in Nepal mean that, through the development of hydropower, the country will play a crucial role in supplying the Indian sub-continent with electricity. The Tanahu Hydropower Plant on the Seti River – about 100 km from the capital Kathmandu – is the country’s first major storage-type hydropower project, and therefore fulfils a pioneering role for the future implementation of similar plants which may be developed to export electricity, especially to India.

The reservoir will be provided with a sediment flushing system, in order to maintain it free from excessive sediment deposition. The installed generating capacity is to be 140 MW, and the main dam is designed as a 140 meter high gravity dam.

Lahmeyer International’s client is Tanahu Hydropower Limited, a special project company founded by the Nepal Electricity Authority (NEA). Lahmeyer will provide the engineering services in

association with Manitoba Hydro International (MHI) from Canada as sub-consultant.

In the first year, these services will com-prise a review of the tender design and documents, followed by the award of the construction contracts. During the construction period of some six years, Lahmeyer will supervise construction and commissi-oning of the project, and thereafter assign hydropower experts to provide assistance during the operation of the plant over the next five years.

This concept has already been proven successful during the implementation of the Lower Marsyangdy HEP in Nepal

(1978 to 1997) when Lahmeyer provided all engineering services from feasibility studies to assistance in operation over several years.

Lahmeyer will be accompanying the project for the entire development period of twelve years, during which time specialists from Lahmeyer will apply their extensive international experience in the design and executi-on of hydropower plants. In particular, their knowledge and expertise in the field of reservoir sediment flushing was decisive for the client, and Lahmeyer was ranked first in both the technical as well as in the combined technical-financial evaluation of offers.Rolf Wigand, Hans Dieter Meiss

Dam SiteSeti River

22

HYDROPOWER & WATER RESOURCES

The decision of the Peruvian government to implement a new sustainable energy strategy for the country includes utilisation of the hydropower potential in the Amazon catchment. While the largest load centre is on the Pacific coast, there is only limited hydropower potential there. In contrast, a huge potential is available east of the Andes.

For Sustainable Energy: Napo-Mazan Low-Head Hydropower Project

PERU

Within the scope of the sustainable energy strategy, the regional govern-ment of Loreto (GOREL) contracted the Lahmeyer Group in June 2012 to prepare a feasibility study and tender design for the Napo-Mazan Hydro-power Project, together with tender documents, an environmental impact assessment and planning of the transmission line.

Experts from Peru and GermanyThe contracted consortium consists of Lahmeyer International, Germany and Lahmeyer Agua y Energía – a Peruvian company of Lahmeyer Group.

The Napo-Mazan Project will be the first major hydropower project in the Peruvian part of the Amazon catch-ment and will use water from the Napo River which originates in Ecuador and is a tributary to the Amazon.

The Napo’s discharge characteristics are anti-cyclic to those of rivers on the Pacific side of Peru, thus facilitating generation at full load when the dry season occurs in the Pacific basin. Near the town of Mazan, the Napo River approaches to within a few kilometres of the Amazon River before flowing parallel to it for some 50 km to the confluence.

Demanding ProjectThe feasibility study determined an optimum installed capacity of 544 MW. The project includes a weir and a navigation lock on the Napo River, and an approximately 3 km long diversion canal to the Amazon River.

100 MW are installed (as 140 small propeller turbines) in the weir; 444 MW are installed (as 8 bulb turbines) in a powerhouse at the end of the diversion canal. With an average head of only 6.8 m there, the power discharge (and the capacity of the diversion canal) is 6,056 m3/s.

In accordance with the Electricity Concession Law (L.D. 25844), GOREL has initiated international competitive bidding. The successful tenderer will be responsible for the financing, design, construction and operation of the entire project, including the 2 x 220 kV transmission line to Iquitos. From Iquitos, the energy will be transported to the west of the country by the 2 x 220 kV transmission line Iquitos-Moyobamba already awarded to Isolux, a Spanish contractor. At the end of the concession period, the project will be transferred to GOREL.

Once it goes into operation, the Napo-Mazan Hydropower Project will play a significant role in helping to alleviate the electricity deficit in the load centres on Peru’s west coast. Pablo Ferradas Luna, Rolf Wigand

Hydropower plant at the end of the channel (8 x 55 MW).

Hydropower plant at the barrage (100 MW).

23

TURKEY

The two Pelton turbines of the 45 MW run-of-river Çambaşı Hydropower Plant will generate on average 175 GWh of electric energy per year. Hidro Dizayn prepared the feasibility study, technical specifications, final and detailed designs and advised the owner, Enerjisa Enerji Üretim A.S., from 2008 to 2013 until commissioning.

Commissioned by Experienced Hands:The 45 MW Çambaşı Hydropower Plant

Çambaşı Hydropower Plant is situated in the Solaklı Basin in the Çaykara district of Trabzon Province in the Black Sea region. A further eight hydropower plants utilise the flow of the Solaklı River.

Already in December 2013, the owner, Enerjisa Enerji Üretim A.S., commis-sioned the plant which was started in 2010.

The Hidro Dizayn experts advised the owner during all stages until commis-sioning in 2013. A feasibility study, technical specifications, final design and the detailed design were prepared. Furthermore, reservoir operation rules for optimum hydropower generation were determined.

Environmentally friendly InstallationThe local topographic constraints, socio-economic condition of the region and environmental considerations determined the design of this run-of- river type hydropower plant.

Water from the Ögene Weir, which provides a daily water storage, is transferred to the Çambaşı Weir via a 4.1 m diameter 1,950 m long concrete lined conveyance tunnel. A 7,130 m long headrace tunnel, which was designed without a surge chamber, takes the flow on further to the powerhouse.

Twin 7.0 m wide and approx. 115 m long underground ponds serve as settling basins at the start of the headrace tunnel.

Furthermore, several temporary and permanent access and connection tunnels were constructed as well as a 10 m wide and 15 m long entrance to the power cavern.

Geological investigations showed that the rock, as well as the joints and faults, have low permeability and sufficiant strengths to prevent significant water losses, deformations and opening of joints (hydraulic fracturing). The headrace tunnel was

located sufficiently deep to ensure that the rock pressure was able to with-stand the internal water pressure.

High CapacityA 2,830 m section of the headrace tunnel was unlined. The unlined section was designed for a pressure head of 275 m and includes a 115 m long sand trap. It was designed to trap sand down to 0.5 mm in diameter.

The steel lined section was designed for a pressure head of about 340 m, which includes water hammer.

The 26.5 m wide and 41.1 m long power- house accommodates two Pelton type turbines, each with a maximum discharge of 10 m³/s and an installed capacity of 22.5 MW, generating on average 175 GWh of electric energy per year.Fatih Yılmaz

24

HYDROPOWER & WATER RESOURCES

Bi-national Inn Hydropower Plant: Team Effort for a challenging ProjectThe ground-breaking ceremony for the bi-national Inn hydropower plant took place on 14th November, 2014. Located in the Swiss-Austrian border region, it will be the largest run-of-river power plant built in the Alpine region for many years. As leader of an engineering consortium, Lahmeyer Hydroprojekt is in charge of preparing the construction design and documents for this challenging project.

Above: Starting shot for construction of the bi-national Inn Hydropower Plant.

Left: Depiction of the weir at Ovella.(Source: www.gemeinschaftskraftwerk-inn.com)

The Austrian utilities Tiroler Wasser-kraft AG and Verbund AG as well as the Swiss company Engadiner Kraftwerke AG are jointly implementing the project on the upper Inn River. The hydropower plant is being constructed between the Swiss municipality of Valsot and the Austrian municipality of Prutz over a period of four years (2014 – 2018) and will generate more than 400 GWh of energy annually. Before construction started, a compre-hensive review of the project was carried out by the statutory authorities in both Austria and Switzerland.

Environmentally-friendly ConceptThe water in the river will be retained by a weir of some 15 m height at Ovella. A small power plant with a capacity of 2 MW is to be integrated in the weir and will discharge the residual water into the Inn River. Installations for fish migration in both directions along the river make the

dam ecologically sustainable. A 22 km long headrace tunnel will convey water to the powerhouse at Prutz. The concrete-lined tunnel has an inner diameter of 5.6 m and runs almost horizontally up to the surge tank. An inclined steel-lined section is then used as the penstock to the power-house in Prutz.

With a gross head of 160 m and a dis- charge capacity of 75 m³/s, two Francis turbines together generate 89 MW of electric energy. The 26 m deep power- house shaft is hardly visible from the surface: only 4.5 m of the building protrude above ground level. This design offers the advantage of minimal impact on the surrounding landscape and the quietest possible operation.

The water is then returned to the Inn River through a 300 m long tailrace channel in such a way that sudden water level changes in the Inn are avoided.

Experienced Project TeamFor this project, Lahmeyer Hydroprojekt has formed an engineering consortium with the tunnelling specialists müller + hereth. While Lahmeyer is working on the two surface structures of the dam and shaft powerhouse with tailwater channel, müller + hereth is responsible for the tunnels.

The engineering services being provided include the preparation of all drawings and calculations required for construction, health and safety coordination of the constructions sites, tendering for the finishing works, and the preparation of as-built drawings after completion of the project.

Together, Lahmeyer Hydroprojekt and müller + hereth provide the client with the requisite expertise to meet all of the diverse challenges of this techni-cally demanding project.Robert Achatz

AUSTRIA / SWITZERLAND

25

BUILDING & TRANSPORTATIONGERMANY

Better interaction of all forms of traffic is the objective of the restructuring of Maaßenstraße in the suburb of Schöneberg. The restructuring is part of the new “Shared Zones” pilot project of Berlin’s pedestrian traffic strategy. Lahmeyer is responsible for project management.

Quality of Life in Berlin: Maaßenstraße Shared Zone as a Pilot Project

In 2011, the Senate of Berlin passed a resolution on a pedestrian traffic strategy aimed at improving the quality of life in the city. Since then, ten pilot projects have been selected to enhance pedestrian traffic. One of these projects is the creation of shared zones.

Maaßenstraße was selected as the initial zone for this pilot project. The aim of the restructuring work is to enable the harmonious interaction of cars, pedestrians and cyclists. The road area is to be made safer, the street environment more pleasant, and motorised traffic slowed down.

Lahmeyer manages the projectLahmeyer Berlin has been involved in the project since spring 2014 with experts involved in scheduling project implementation, the review of design and drawings, negotiations with utilities, participation in the award of construction contracts, and atten-dance at meetings with statutory organizations and members of the public.

During the construction phase, Lahmeyer will monitor cost, supervise construction, and report regularly to the Senate and the municipal govern-ment.

The high level of public interest and the number of parties involved necessitate intense and accurate coordination. Lahmeyer is responsible for managing this coordination.

Individual requests adoptedThe public was involved in the project from the outset. Citizens were able to share their thoughts at various events and online. Children, youths and groups representing the disabled were also interviewed, resulting in many of their ideas being adopted.

Thus, for example, the road will be made narrower with special crossings for disabled people; bicycle traffic will be relocated from the footpath to the road. Seating areas will invite people to sojourn; parking will no longer be allowed. The speed of vehicles is to be reduced and people encouraged to mingle in the area without feeling compelled to buy from the shops. In

response to a special request from children, a lookout tower will be built at the northern end to provide a view over the entire area.

Construction contracts were awarded in 2014, and the project is scheduled for completion in November 2015.

Upon completion, the effectiveness of the measures will be assessed in a before-and-after comparison compiled throughout the project. The compari-son will analyse traffic density and speed, causes of accidents, and public acceptance of the restructuring work so that subsequent projects can benefit from the results.Stefan Wurl

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BUILDING & TRANSPORTATION

The German Football Association (Deutsche Fussball-Bund, DFB) intends to establish a new base in Frankfurt-Niederrad and consolidate all its activities there. This raises the question of how the existing DFB buildings might subsequently be used. Lahmeyer Rhein-Main was assigned to value the property.

Comprehensive Performance for Sport: Valuation of DFB’s Existing Premises

Germany’s governing body of football intends to build the new DFB academy on the site of a former horseracing track. As well as training facilities, the location is suitable for hosting other functions such as talent development or services for regional and provincial associations.

Further, the possibility of accommoda-ting the DFB headquarters and thus consolidating all functions on one site is to be assessed.

At present, the DFB is based at Frankfurt’s Otto-Fleck-Schneise 6, near the Commerzbank-Arena. There, the DFB is in the best of company, with numerous other sports associations having their headquarters nearby. A suitable future use would have to be found for this property with a surface area of over

9,000 m². As it is located in an area dedicated to sport, it is unfit to serve as conventional office space.

The property itself comprises three wings of different ages with a gross volume of 55,000 m³ and a parking lot. Over the years, the complex grew by alteration and expansion.

Holistic analysisWhile considering the future use of the property, the DFB assigned Lahmeyer Rhein-Main initially to inspect it and determine its market value. Lahmeyer experts inspected the property, evaluated the structural quality of the buildings, the extent to which they have been maintained, the value of the land and the buildings, as well as the property’s future earning potential.

They also analysed all general conditions affecting the value, such as building laws and regulations, the structural quality of the buildings, building services, zoning requirements, and the current real estate market. The market value was then determined from the diverse data collected.

Thus, the engineers and valuators needed not only construction exper-tise, but also specialised knowledge with regard to building and planning requirements. Furthermore, aspects of the real estate industry were included in the valuation. On the basis of their complex multidisci-plinary skills, the team of Lahmeyer Rhein-Main performed a holistic analysis of the property over its entire life cycle.Michael Lebsanft

Lahmeyer Rhein-Main valued the DFB’s existing premises, considering the entire life cycle.

A new use is sought for the DFB head-quarters in Frankfurt.

GERMANY

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for the St 2084 state road near the eastern end of the new motorway section. Near the intersection with the railway track 5600 between Munich and Simbach, the road is to be rerouted over a length of some 475 m and connected to the new section of the B12.

In addition to the traffic infrastructure on the motorway and the modification of the subordinate road network, Lahmeyer Munich also designed extensive drainage systems with large sediment traps and retention basins, as well as the relocation of a stream.The services of Lahmeyer München make a significant contribution to the PPP project “Availability Model A94 Forstinning-Marktl”.

Bridge ConstructionFor the new alignment of state road St 2084 as part of the Heldenstein junction, a new road bridge is to be built over the railway line. Previously, Lahmeyer analysed the alternative of a steel composite continuous-beam bridge with double-webbed T-beams in prestressed concrete and later prepared the structural design. This defines construction with continuous prestressed concrete beams for the 130 m long three-span flyover.

In addition to design of the structure, Lahmeyer Munich also compiled the statutory road / rail crossing agreement in accordance with §12.2 EKrG (law for railway crossings).

Originating in the city of Munich, the A94 currently connects to Munich’s ring motorway (A99) and in future to the A3 south of Passau. When comple-ted, the motorway will be designated E552 as part of the European road network.

The 40 km long new section of motorway is a PPP project, it begins in Pastetten in the district of Erding, and ends at the Heldenstein junction on the B12 federal highway / St 2084 state road with the connection in the district of Mühldorf / Inn to the transition to the already completed section of the A94 between Helden-stein and Ampfing.

Lahmeyer München has been heavily involved in the project since 2009, first with the risk analysis in accordance with UIC Code 777 for the parallel routing of the A94 alongside the railway track between Munich and Mühldorf (line upgrade 38), the flyover of the St 2084 state road over line upgrade section 38, and the detailed planning of a 4.3 km long motorway section near Heldenstein.

Road Construction The new A94 motorway, over which more than 42,000 cars pass daily, traverses undulating terrain necessi-tating embankments up to 10 m high and cuts up to 12 m deep. Furthermore, the motorway extension crosses roads which will have to be modified or even rerouted. This is particularly the case

The German motorway A94 will ultimately connect Bavaria’s state capital, Munich, with the town of Passau which lies to the east, on the Austrian border. Extension of the A94 will improve the motorway network in Lower Bavaria and connect not only the area’s industrial centres but also three spas in the Inn Valley with the Greater Munich area. Lahmeyer is involved in the work on the stretch between Dorfen and Heldenstein, which includes road and bridge construction for the A94 as well as railway construction for the Deutsche Bahn.

Four-lane Construction of the A94 Motorway

Railway Construction In addition to the motorway project, Lahmeyer Munich has, since 2005, been providing essential services to the Deutsche Bahn for the two-track extension of the railway between Munich, Mühldorf and Freilassing, which partly adjoins the A94 in the vicinity of Ampfing. The railway has already been constructed and put into operation over an 8 km stretch between Ampfing and Altmühldorf and is currently under construction over a 4 km stretch near Mühldorf. Konrad Daxenberger

GERMANY

Planned Heldenstein junction on the A94.

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