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Investing in your future. Energising deltas is partly financed by the European Regional Development Fund of the European Union. Energising deltas Worldwide opportunities

Worldwide opportunities€¦ · Worldwide opportunities. 7 12 16 24 20 8 32 28. TABLE OF CONTENTS INTRODUCTION 4 ENERGISING DELTAS - WORLDWIDE OPPORTUNITIES CONCLUDING REMARKS 36

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Page 1: Worldwide opportunities€¦ · Worldwide opportunities. 7 12 16 24 20 8 32 28. TABLE OF CONTENTS INTRODUCTION 4 ENERGISING DELTAS - WORLDWIDE OPPORTUNITIES CONCLUDING REMARKS 36

Investing in your future. Energising deltas is partly financed by the European Regional Development Fund of the European Union.

Energising deltasWorldwide opportunities

Page 2: Worldwide opportunities€¦ · Worldwide opportunities. 7 12 16 24 20 8 32 28. TABLE OF CONTENTS INTRODUCTION 4 ENERGISING DELTAS - WORLDWIDE OPPORTUNITIES CONCLUDING REMARKS 36
Page 3: Worldwide opportunities€¦ · Worldwide opportunities. 7 12 16 24 20 8 32 28. TABLE OF CONTENTS INTRODUCTION 4 ENERGISING DELTAS - WORLDWIDE OPPORTUNITIES CONCLUDING REMARKS 36
Page 4: Worldwide opportunities€¦ · Worldwide opportunities. 7 12 16 24 20 8 32 28. TABLE OF CONTENTS INTRODUCTION 4 ENERGISING DELTAS - WORLDWIDE OPPORTUNITIES CONCLUDING REMARKS 36

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12

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2024

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TABLE OFCONTENTS

INTRODUCTION

4 ENERGISING DELTAS - WORLDWIDE OPPORTUNITIES

CONCLUDING REMARKS

36 CONCLUDING REMARKS

PARTNERS

7 TIDAL TESTING CENTRE Pieter Bergmeijer

8 TOCARDO Hans van Breugel

12 REDSTACK Rik Siebers

16 ANTEA GROUP Piet Ackermans

20 DELTARES Arnout Bijlsma & Luca van Duren

24 ECN Martijn van Roermund

28 ERASMUS UNIVERSITY ROTTERDAM Arwin van Buuren & Mike Duijn

32 ENERGY VALLEY FOUNDATION Paulien Kooistra

3

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ENERGISING DELTAS WORLDWIDE OPPORTUNITIES

4

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DUTCH POSITION AND FOCUSUntil recently, energy generation from water has received

little attention in the Netherlands. Some partners in the

consortium, however, are specialised in flood protection,

which is an integral part of the Energising deltas concept.

Furthermore, the effectiveness of tidal energy has

already been demonstrated at several locations in the

United Kingdom and France. What makes Energising

deltas unique is its combination of energy generation,

water regulation and flood protection. This combination

has not yet been implemented before and offers the

opportunity for Dutch enterprises to develop, design

and build multifunctional dams, dikes and barriers based

on hundreds of years of Dutch experience in protecting

their deltas.

In this research project we focused on the interaction

between flood protecting works (Antea Group/Strukton)

and tidal energy (Tocardo) and salinity gradient energy

by reverse electro dialysis (REDstack). The main topics

were optimisation of energy production, minimisation

of environmental impact and developing a governance

strategy addressing how to organise public works which

combine flood protection and energy production. In

order to contribute to the Lisbon Agenda, we are now

looking for more European partners to establish a strong

network that can implement the concept globally.

Energising deltas is a concept which combines water management (especially flood protection) with

renewable energy harvested from water. This concept was the focus of the Energising deltas project,

financed by the European Regional Development Fund of the European Union, the Province of

Noord-Holland and the consortium partners. It has been explored and developed for the Netherlands

and other delta areas worldwide. Private partners (Tocardo, REDstack and Strukton/Antea Group)

joined forces with knowledge partners (Deltares, ECN and Erasmus University Rotterdam) to forge a

scientific base for the concept of Energising deltas. The partners Tidal Testing Centre and the Energy

Valley Foundation were responsible for general coordination and communication.

The first goal of the research was to build special tools for technical optimisation and to construct

a generic framework to analyse and minimise environmental effects. The second objective was to

identify which governance issues need to be solved in order to implement the concept successfully.

Ultimately this will lead to a stronger position of the Dutch and European partners in the worldwide

market of safe and sustainable delta areas.

PERSPECTIVE OF PRIVATE PARTNERSSupported by the profound knowledge of the research

institutes Deltares, ECN and Erasmus University

Rotterdam, the private partners in this project are keen

to tap into the huge potential of the renewable energy

market and contribute to safer and more sustainable

delta areas. Although the Dutch home market shows

limited potential, the roll-out of the Energising deltas

concept offers a compelling showcase for decision

makers and investors from abroad.

THE ADDED VALUE The added value of the project lies not only in the

unique combination of sustainable energy production

and flood protection, but also in the build-up of a

stronger knowledge position. This will lead to:

• a strong export position

• input for projects in the Netherlands (Brouwersdam,

Afsluitdijk and Oosterschelde)

• better access to European funding

• more expertise on governance issues: how to

organise such combinations

• tools for technical optimisation

• tools for minimisation of environmental effects

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The results of this project will boost the development of

both tidal and salinity gradient energy. A recent study

by Ecofys et al. (2014), commissioned by Innovation

Quarter and the ministries of Economic Affairs and

Infrastructure & Environment, demonstrated that To-

cardo and REDstack are global frontrunners in these

technologies, showing excellent potential.

MARKET POTENTIAL AND STRATEGYTop Sector Water expects a considerable contribution to

the export of innovative delta technology, as mentioned

in one of their policy papers. The Energising deltas

concept is seen as one of these innovations. In more

than twenty delta areas in the world there is a need for

improved flood protection, where energy production

will be an added value. The question is which strategy

should be followed to obtain the revenues from this

market potential for our integrated delta technology

concept. We expect our clients to be foreign authorities

and therefore the role of the Dutch authorities might

be crucial. They can assist with lobbying activities

supported by research institutes offering relevant

knowledge. They can also provide the private partners

with room to experiment and showcase the concept in

the national and regional home market. They can also

act as a launching customer, thereby adopting part of

the risk related to the investment. The showcases of

the integrated concept combined with international

education programmes will create a strong Dutch

position in the international market.

KEY PARTNERSIt is important to involve key partners at an early stage.

The Dutch Water Authority ‘Rijkswaterstaat’, responsible

for water management and flood protection, is one

of these. Since Rijkswaterstaat is the asset manager

of Dutch dams, dikes and barriers, the production of

sustainable energy in combination with these structures

will affect and support them in their primary task.

Rijkswaterstaat has an important position in realising

the concept, passively as well as actively. Passively by

giving permits to test the energy production at relevant

locations, and actively by participating in the projects

as far as commissioned by the asset owner, the Dutch

Ministry of Infrastructure and the Environment. This will

THE PROJECT PARTNERS

In the following chapters the partners of the

Energising deltas project will tell their own

stories. Why have they participated in the

project and to what extent will the results of the

project boost the technological development

and market introduction? Which topics are

addressed and researched and which need

further examination? Both the industrial and

knowledge partners consider these questions

from their own perspectives. The final chapter

summarises the most important results of the

project.

The research reports will be published and

made available on www.energisingdeltas.com.

stimulate further development of the concept greatly

as an added-value innovation. Innovation is identified

as one of the important carriers of the Dutch economy

and Top Sector Water is designated by the national

government as one of the priority areas of innovation

with great export potential. It is therefore a must that

authorities are actively involved. In the Dutch water

safety network, the so called ‘Deltaprogramma’ and

the Top Sector Water are key players in supporting

innovation in this field. Other crucial players are

regional water boards, which own a great deal of assets

for which sustainability programmes are carried out.

Provinces and local councils may also play an important

role in water management, as it is part of regional

development and concerns economic carriers such as

recreation, agriculture and tourism. Equally important

for realising the concept is the player closing the long

term power purchase agreement, which may be an

energy company or a regional energy cooperative.

Independent knowledge centres may play a vital role

in opening foreign markets. This requires research

funding agencies to invest in research that makes state-

of-the-art design tools available. Last but not least, it

is also critical to involve financial partners to realise

international projects.

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Pieter Bergmeijer, coordinator of the Energising deltas

project and director of Tidal Testing Centre (TTC) in Den

Oever, looks back on an interesting project with useful

results. The consortium partners collaborated to examine

the main challenges of designing, constructing and

operating ‘energy dikes’ and to promote the concept for

further development and worldwide implementation.

From the very start the project company partners

REDstack, Tocardo and Antea Group/Strukton directed

research efforts towards those topics that would result

in a competitive advantage. Our knowledge parties

Deltares, Imares, Erasmus University Rotterdam and

ECN accepted the challenge and detailed up strategies

on governance of integrated energy and waterworks to

develop powerful technical and environmental impact

7

PIETER BERGMEIJERGeneral Director at Tidal Testing Centre (TTC)

and Coordinator of the Energising deltas project

assessment tools. Together with Energy Valley we

organised the knowledge dissemination through several

well attended events. I would like to congratulate all

partners on the results we achieved!

ABOUT TTCThe Dutch Tidal Testing Centre (TTC) located in the North

of Holland at Den Oever provides excellent opportunities

for tidal stream testing at intermediate scale. It can offer

testing in a ducted channel, open water tow tests and

at its offshore floating site. Besides these services, TTC

is involved in several funded research projects, both in

national and international consortia. The centre also

collaborates with other test facilities such as ECN, NIOZ,

EMEC and other international networks.

TTCTidal Testing Centre (TTC) is the initiator and coordinator of the Energising deltas project.

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Energising deltas is a project with a unique and

innovative character, not only because of the concept,

but also due to the combination of consortium

partners. Since 2005 we have been testing our one

of a kind tidal turbine in the Afsluitdijk and installed

our first commercial demonstration turbine there in

2008. We are therefore intrinsically linked to both

sustainable innovation as well as the Afsluitdijk.

Combined with the fact that sustainable energy

deltas will be a significant growth market, our

participation makes sense.

TOCARDO“Energising deltas enabled us to reach a market we would never have been able to serve individually, as projects like these are of considerable scale.”

INTERVIEW HANS VAN BREUGEL

General Director at Tocardo

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The research questions addressed in Energising deltas

aimed to examine how such a concept can best be

designed and subsequently optimised into a Dutch export

product. The different partners were complementary

to each other in achieving this goal. Antea Group, for

example, is very capable of mapping the environmental

factors that occur in large infrastructural projects such

as energy dikes. The first step, however, is creating

a model to do so, which requires a research institute

such as Deltares. Another aspect of structures such as

the Energising deltas concept is the collaboration of

public/private parties. This was the focus of the Erasmus

University Rotterdam. The roadmap they developed

provides us with insight into what mechanisms are

present in such collaborations, what is the best course

of action to ensure the concept of Energising deltas

becomes successful worldwide and what we can and

cannot offer the government in question.

“Together with the partners of Energising deltas we are now in the process of selecting four or five areas with the highest potential and composing an operational plan to realise the first assignment between now and the coming five years.”

Energising deltas enabled us to reach a market we

would not have been able to serve individually, since

projects like these are of considerable scale. Tocardo is

a relatively small organisation with a high pressure on

R&D, which forces us to make choices on what market

sectors we can serve. Energising deltas enables us to

reach a market we would have otherwise ignored.

By participating in Energising deltas we gained a

remarkable knowledge advantage on several aspects

of the Energising deltas concept. This translates into

a significant competitive advantage, increasing our

chances of being selected for new projects. We now

know how to approach projects like this marketing-

wise and how we can optimise tidal turbines for energy

deltas. Additionally, we understand the dynamics of

private/public projects and their financing.

Energising deltas enabled us to enter the market of

energy deltas, domestically as well as internationally. In

the Netherlands the Afsluitdijk will continue to function

as a demonstration and testing site. We now have four

tidal turbines in the Afsluitdijk in Den Oever and are

planning to place 18 more in Kornwerderzand next year.

We are currently negotiating to place our tidal turbines

in the Brouwersdam, whilst the same possibility exists

for expansion of the turbines in the Oosterschelde. As

for our international plans, there are over 22 deltas in the

world which resemble the Dutch delta. Together with the

partners of Energising deltas we are now in the process

of selecting four or five areas with the highest potential

and composing an operational plan to realise the first

assignment between now and the coming five years.

We take both developing and industrialised countries

into consideration, as we can offer a comprehensive

solution for new structures, but are also able to optimise

existing structures. The Brouwersdam is a good example

of a decades old water safety structure which has

had a significant negative impact on its environment.

These kinds of structures exist worldwide and indicate

the potential of Energising deltas, especially in the

long term.

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We are pleased with how Energising deltas has been

executed and how the cooperation between the partners

has become more robust. Of course there are aspects

which we would have liked to see addressed in greater

detail, but choices had to be made in defining the scope

of the project. Although this project did not answer all

the questions we had, it definitely sharpened them.

Deltares optimised a model whereby we can answer

questions that occur in similar projects. The same applies

to Erasmus University Rotterdam’s research. We are now

aware of what to focus on in our marketing and we can

ask questions that are more concrete. Additionally, ECN

was able to convert their wind energy models and apply

them to tidal energy and tidal dams, which enables us to

answer these types of questions in forthcoming projects.

In future endeavours we would like to see these models

operationalised further and to develop a specific and

concrete framework for financing such public/private

projects. Naturally we will also continue to optimise the

Tocardo tidal turbine.

“The Dutch are already internationally renowned for their delta works and extensive knowledge regarding water, deltas and safety. And now we can also add sustainable energy from water to this list.”

The Dutch government should adopt a facilitating role.

When water defences are to be (re)constructed, the

option to create an energising delta and the removal of

barriers such as stringent regulation should be facilitated.

This will improve the learning curve of many innovations,

giving them a greater chance of reaching the market.

We believe that if the government would facilitate tidal

energy the same way offshore wind is facilitated in the

Netherlands, a domestic market with an export potential

of two to four billion euros can be created within the next

ten years. Additionally, the Dutch government can add

the concepts of Energising deltas to its export policy

and further utilise the export instruments of the Ministry

of Economics. The Dutch are already internationally

recognised for their delta works and extensive knowledge

of water, deltas and safety. And now we can add

sustainable energy from water to this list as well.

11

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INTERVIEW RIK SIEBERS

General Director at REDstack

REDSTACK“The Dutch are already internationally renowned for their delta works and extensive knowledge regarding water, deltas and safety. And now we can also add sustainable energy from water to this list.”

REDstack is a company which develops the Reverse

Electro Dialysis (RED) technology with the purpose

of bringing it to the market. We participated in

Energising deltas as it is carried out by a consortium

of parties which can bring our technology closer to

the market, and also because the project enables

these partners to approach the market as one. It

also gives us access to scientific knowledge which

we can now apply in our own technology. The

models of Deltares, for example, form an excellent

source of information for important environmental

factors, such as intake locations, currents and

changes in the concentration of fresh and salt water.

The Erasmus University Rotterdam, for its part,

developed a governance model, which provides us

with a framework on how to analyse optimally the

acquisition process. As such, all consortium partners

have their own strengths. They complement each

other in the Energising deltas concept and stimulate

the development of a high potential export product.

There were three topics relevant to REDstack in this

project. First of all, the REDstack technology is still

developing. Together with our partners Fuji Film and

Wetsus, we work on further development and optimising

the REDstack technology in our pilot plant. Subsequently,

when the technology functions well, it has to be placed

into its environment. This environment demands a place

where we can take in salt and fresh water, since our

technology revolves around the extraction of energy

from the concentration difference between these two

solutions. The larger the concentration difference, the

more energy can be produced. We also try to take in

as little as possible organisms, sand and other floating

matter. Both the horizontal and the vertical position of

the point of intake are therefore critical. Deeper water

has a higher salinity, which improves efficiency. However,

deeper also means closer to the bottom, which means

more sand, organisms and other unwanted matter in the

intake water. This kind of knowledge is essential in order

to gain an optimal energy yield. Deltares is the party

that can provide us with answers through their model

calculations. Each location presents unique variables,

which requires them to be modelled and inventoried

individually. When we finish development and will enter

the market together with the project partners, these

models will prove to be essential in successfully realising

Energising deltas. Another research question addressed

in this project concerned market entry, which is where

the governance study from the Erasmus University

Rotterdam comes in.

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“All consortium partners have their own strengths. They complement each other in the Energising deltas concept and stimulate the development of a high potential export product.”

As the project progressed, we received intermediate

results that sharpened the questions we started

with. These results provided us with answers, but

also generated more questions. These questions

were discussed in plenary and bilateral meetings and

subsequently converted into action points. Along this

interactive line of information dissemination we received

feedback on how to improve our technology, which we

have subsequently applied. Obviously, a choice needs

to be made between what can be addressed and what

can not, depending on the level of effort required and

the time and financial means available.

Deltares provided us with insight into the effect of

different levels of salinity. Additionally, we gained a

clear understanding of how the composition of water

changes over time. During high tide, water from the

North Sea enters the Wadden Sea, raising the level of

salinity in the water. During ebb, fresh water replaces

the salt water, reducing the salinity of the water again.

Furthermore, there were measurements which indicated

a higher level of floating matter and organisms in the

water during certain periods. We can therefore better

predict what kind of intake water we will receive and

adjust our processes accordingly. Another important

result is the location of the intake point. If you take in

feedstock water far off the coast, the water may have

a higher salinity, but a pipeline has to be constructed,

elevating the costs. On the other hand, a location close

to the coast may be less costly, but the amount of debris

that is taken in is higher. This project provided us with

a method to determine the optimal intake point for

different locations more accurately.

Summarising, Energising deltas contributed to a method

for determining the optimal intake point and process, as

well as strengthening the market approach. All Energising

deltas partners possess their own expertise and when

combined can realise the Energising deltas concept.

Ultimately, this project accumulates new knowledge in

the field of energy from water with existing knowledge

of building dikes, for which the Dutch are internationally

renowned. This is an excellent combination of existing

and new elements, which provides all partners with a

significant competitive advantage at international level.

“This project provided us with a method to determine the optimal intake point for different locations more accurately.”

The REDstack technology just passed the fundamental

research level and we now have our first pilot site. We

expect to be able to deliver our product commercially

around 2020-2025 and will therefore focus first on

the domestic market. By combining the REDstack

technology, the tidal turbines of Tocardo and wind

energy, the Afsluitdijk can be energy neutral by 2025.

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This will also contribute to the sustainability goals set

by the Dutch government. We also wish to realise a

project with REDstack technology in the Dutch province

of Zeeland. Additionally, our technology can be applied

using sewage treatment effluent, which further broadens

our horizon on the domestic market. Nevertheless, the

Dutch market is relatively limited with an estimated

domestic potential of 1.700 MW for the concept of

Energising deltas as a whole and a maximum potential

of 700 MW for REDstack technology1. We therefore aim

to develop our technology for the international market

in the longer term. We estimate the global market

potential on 1.5-2.5 TW for REDstack technology using

surface water resources. Since we generate energy from

the concentration difference between two water flows,

our technology can also be applied in other situations,

such as the industrial market, which strengthens the

international market potential even further.

The government has an important role to play in

launching the Energising deltas concept in the domestic

market in order to successfully apply the concept

internationally. Realising an energy neutral Afsluitdijk

is a good step forward. The government can support

the Energising deltas concept by keeping their eyes

and ears open and by utilising their embassy network

and international trade delegation visits. Besides this,

the Dutch government could facilitate projects such

as this by simplifying the permit acquisition process.

Acceleration can be achieved when the enthusiasm

and sympathy of the authorities towards the Energising

deltas concept can go hand in hand with stringent safety

regulations. Actions like these will significantly enhance

the chance of more innovative sustainable technologies

reaching the market.

1Deltares, Water als bron van duurzame energie, 2008

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ANTEA GROUP“This project forms the basis for a positive approach towards a changing world.”

Energising deltas is the first large scale project

of its kind in the Netherlands, combining water

safety, water management and sustainable energy

generation from water, carried out by a unique

consortium of partners. We at Antea Group were

keen to join this ground breaking initiative, as it

is very much in line with the kind of services we

provide. We were also attracted by the diversity of

the subject and consortium partners. Strukton is the

official partner of the project, but since Antea Group

and Strukton are part of the same holding, we joined

forces in the Energising deltas project.

Antea Group and Strukton were primarily responsible

for the design and construction of the installations on

the demonstration site at the Oosterschelde storm

surge barrier. We based our design and construction

on the multiple computational models composed in

this project to map the forces on the construction of the

storm surge barrier and understand the environmental

impact of the turbine installation.

The project consisted of three working packages,

aimed at optimising energy production and minimising

environmental impact of tidal energy, developed by

Tocardo Tidal Turbines, and blue energy, developed

by REDstack. The working packages primarily focused

on tackling the technological, governance and financial

aspects to enable the launch of a new, innovative Dutch

export product.

The technological questions primarily comprised optimal

sustainable energy generation from water at water

defence and water management works, with as little

environmental impact as possible. An issue inherent to

innovations is that governance and financial procedures,

as well as approvals, are still uncharted territory. The

normal tendency is to compare an ‘energy from water’

project with other proven technology projects. This was,

however, not possible for a pilot project like Energising

deltas, due to the innovative technologies. The Erasmus

University Rotterdam made a valuable contribution

towards developing a strategy and governance

architecture, providing us with direction for similar

future projects. The financial side is always a significant

challenge in projects like these. Economic indicators

usually requested to eventually gain access to finance

are not available yet and can only be determined by

actually applying the technologies. This is especially true

in public finance and was the main reason we focused

on establishing a business case through demonstration

of the technologies and development of computational

models. This is, however, true for most innovative

technologies and the reason why many innovations do

not reach the market: the well-known ‘valley of death’

situation through which these innovations need to pass.

“Early involvement of these authorities is essential for projects like this, since they raise issues that are not immediately considered. The first step is to develop proper theoretical models by research institutions or businesses.”

INTERVIEW PIET ACKERMANS

Business Line Director Infrastructure at Antea Group

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The energy generating technologies are installed

in public works, where water safety and/or water

management is involved. Therefore close collaboration

with legislative and governmental authorities is

required. Early involvement of these authorities is

essential for projects like this, since they raise issues

that are not immediately considered. The first step

is to develop proper theoretical models by research

institutions or businesses. Subsequently, these models

need to be validated in real projects. A good example

of this is the fish mortality: there are strict rules already

in place, however few projects exist where the real

rates of mortality can be determined. Despite this, the

involvement of several authorities also taught us how

challenging it is to realise projects such as these. The

concept is so innovative that governmental authorities

do not have a reference, making it hard for them to

judge what is and what is not acceptable. It is therefore

vital to involve these authorities at an early stage, so

that they can understand the project framework and

activities involved better.

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Antea Group operates in a market where innovation is

a competitive advantage. Because we were involved

in developing theoretical models, we obtained a

better understanding of these models and were able

to transform and apply them to an ‘energy from water’

project. Additionally, the project received a significant

amount of press attention and our involvement was

widely broadcast, further adding to the acquired

competitive advantage. This project and the subsequent

results are therefore of great value to us and form the

groundwork for further development and export of the

innovative concept of urban sustainable deltas.

“This project and the subsequent results are therefore of great value to us and form the groundwork for further development and export of the innovative concept of urban sustainable deltas.”

Dutch companies are internationally renowned for

designing compact areas with a multitude of functions.

Furthermore, we are historically known for our water

management skills. Combining the two is mere logic,

primarily because the energy potential of water is per

km2 a factor 100 higher than wind energy. Additionally,

tidal energy is a reliable source due to the predictability

of the tide and water currents. As a result, these

technologies can deliver continuous sustainable energy

(base load) and are able to give inhabitants of delta

areas worldwide access to predictable sustainable

energy every day of the year. In other words, this project

forms the basis for a positive approach towards a

changing world.

The Dutch demonstration sites such as the Afsluitdijk

and Oosterschelde will be used for further testing and

data gathering in order to optimise and certify the

models/systems. The Dutch sites will also serve as a

place to welcome the international community and to

demonstrate implemented technology. Specifically,

Antea Group will focus on expanding its knowledge

of the design and construction of the systems.

Issues such as structural load on the supporting and

suspension constructions were not fully addressed in

the computational models due to limited resources

and time. This is why practical performance posed

a challenge from time to time. These aspects will

be addressed in follow-up projects, since this type

of information is essential for acquiring permits and

calculating the construction and exploitation costs.

In the field of legislation, marketing and financing,

the Dutch government can play a significant role in

maximising the chances for Energising deltas on both

the domestic market and the export market. Legislation

is a critical issue. Sustainable urban deltas are integral

projects, where multiple government authorities are

involved. This makes acquiring the necessary permits

a time consuming process. One overarching window

would make the process much more efficient for

developers. The so-called Dutch ‘Omgevingswet’

(environmental law) has the potential to fulfil this, being

introduced as a one stop shopping instrument. However,

this does not mean that the people behind this counter

always know what to do and then it comes down to

the private parties again. The study conducted by the

Erasmus University Rotterdam provides a framework

for how the government can facilitate projects like this

and how governmental agencies can be involved in the

decision making process. Hopefully this framework is a

step in the right direction.

When it comes to finance, governmental subsidies

already stimulate the commercialisation of innovation.

Contrary to on-shore and off-shore wind energy,

subsidies for energy from water are currently still limited.

This makes the realisation of demonstration projects

such as Energising deltas an even bigger challenge.

We therefore invite the government to create more

subsidies specifically aimed at developing energy from

water. In addition, the government can contribute to

the sustainable urban deltas concept by creating more

awareness through for example trade delegations,

similar to the action Prime Minister Rutte instigated in

China and Minister Kamp of Economic Affairs took in

Japan and Korea.

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DELTARES“We aimed to develop tools that optimise energy generation and minimise environmental effects. We focused on hydrodynamics and ecological effects in both near-field and far-field.”

Deltares is an independent institute for applied

research in the field of water, subsurface and

infrastructure. Throughout the world, we work on

smart solutions, innovations and applications for

people, environment and society. Our main focus is

on deltas, coastal regions and river basins, which is

translated in our motto: ‘Enabling Delta Life’. Our

participation within Energising deltas completely

concurs with this motto. We can provide a helicopter

view on various subjects addressed in this project,

such as hydrodynamics, sediment transport, water

quality and environmental impact, and are able

to integrate the knowledge of the partners into a

comprehensive solution. At Deltares we are used to

work in multidisciplinary settings, which is one of the

main prerequisites of this project.

INTERVIEW ARNOUT BIJLSMA

Senior Researcher and Advisor in Hydrodynamics at Deltares

LUCA VAN DUREN Senior Researcher on Ecosystems and

Sediment Dynamics at Deltares

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Within the project, we developed tools which help to

optimise energy generation and minimise environmental

effects. We focused on hydrodynamics and ecological

effects in both near-field and far-field, whereas ECN

focused on aspects relevant to turbine design. Together

with the commercial consortium partners, we selected

the most urgent subjects based on the available time

and resources.

“Near-field effects such as fish or seals being at risk from collision with a rotor blade are often more conspicuous and more in the public eye. However, far-field effects may be far more important in the longer run.”

To determine environmental effects, we started off by

establishing a generic framework of elements that need

to be considered for any type of energy generation. It

comprises effects on the physical environment as well

as on groups of species, ranging from plankton to fish,

mammals and birds. It also considers all aspects of energy

generation which can exert stress on the environment,

including moving parts which can damage fish and

mammals, changes in water chemistry and under water

sound effects. For each location and for each method

of energy generation different effects are relevant. For

example, for tidal turbines in the Oosterschelde it is

important to consider the effect these turbines have on

the exchange of water between the Oosterschelde and

the North Sea. Too many turbines will reduce the tide

in the Oosterschelde with possible detrimental effect to

the environment. However, as both the North Sea and

the Oosterschelde are fully marine, this will not affect

the salinity in either system. This is different for the blue

energy plant on the Afsluitdijk. Large scale operation

of such a plant would not change the total amount of

freshwater discharge in the system, but it would affect

the distribution and the salinity gradients, which in turn

would affect the environment. Sound knowledge of large

scale and small scale water movement is paramount

in this. Near-field effects such as fish or seals being at

risk from collision with a rotor blade are often more

conspicuous and more in the public eye. However, far-

field effects may be far more important in the long run.

Both for optimising energy production and to analyse

environmental effects, we worked with several computer

simulation models. One of these models was DELFT3D

(http://oss.deltares.nl/web/delft3d), a 3D open source

model developed by Deltares to investigate hydro-

dynamics, sediment transport, morphology and water

quality on the scale of ecosystems (e.g. the scale of the

Oosterschelde or the Wadden Sea). In order to assess

near-field effects and to optimise the flow in water works

and around turbines, we combined these with fine scale

models that describe the flow on the scale of centimetres

to metres, known as Computational Fluid Dynamics

(CFD) models. This model combination is an important

new development and Energising deltas therefore also

enabled us to optimise our own models.

For the REDstack technology we focused on what

locations would offer optimal energy production in terms

of water intake and outfall locations. We examined this

using the Delft3D modelling suite, to determine the

locations with high salinity and low silt concentrations.

The REDstack technology is in a pilot phase and is

still applied on a rather small scale. No significant

environmental effects are expected with the current set-

up. Research on environmental impact focuses on future

scenarios when the technology will be scaled up.

“In order to assess near-field effects and to optimise the flow in water works and around turbines, we combined these with fine scale models that describe the flow on the scale of centimetres to metres, known as CFD models. This model combination is an important new development and Energising deltas therefore also enabled us to optimise our own models.”

The results of our research are interesting not only

for the consortium partners, but also for other small

and medium sized enterprises (SMEs) and parties

involved with Energising deltas concepts. Furthermore,

governmental authorities now have more insight into the

environmental factors that are associated with renewable

energy production and as a result might take up a more

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facilitating role. Additionally, local interest groups can

benefit from the research in this project, since they are

often interested in the environmental effects of the

application of renewable energy.

Deltares has extensive knowledge of hydrodynamics,

underwater environment and habitat, but we have

limited expertise in fish species and their behaviour.

Since mortality rates of fish depend strongly on both the

local hydrodynamics, the characteristics of the turbines,

as well as on the behaviour of the different fish species,

we collaborated on this subject with IMARES and

with Tocardo.

The research conducted during Energising deltas

enable private parties to map the hydrodynamic and

environmental effects more accurately and more

efficiently, which is needed in feasibility studies and often

a prerequisite for obtaining permits. The project is also

an excellent marketing tool. These two aspects are not

just true for the domestic market, but can be applied

internationally.

Another positive aspect of the tools developed in

Energising deltas is that the project partners are able to

perform a quick scan to assess the possibilities and the

potential side effects of an application of the Energising

deltas concept. As a project progresses, the modelling

will become more detailed and focus on other aspects.

Energising deltas laid down a solid basis for these

processes and gave the partners a head start.

The results are highly location and technology specific.

That, however, does not mean other parties cannot

utilise the generated knowledge and apply the

frameworks developed during this project. Some reports

have sensitive company information and will remain

confidential, but most of the results will be published and

accessible via www.energisingdeltas.com.

This project has answered many questions, but each

answer has generated at least two new questions. Some

of these questions are currently addressed in concrete

proposals for new projects. We aim to set up new projects

in cooperation with Tocardo and the Technical University

of Delft to examine fundamental processes and effects of

turbines in waterworks. Additionally, REDstack and NIOZ

initiated research plans to study further the environmental

effects of taking in large amounts of water. This is relevant

when scaling up the REDstack technology.

In our future endeavours we would also like to focus on

further validating our models, on morphological changes

in the sea bottom, the relation between fish behaviour

and currents and perform a more detailed analysis of

the far-field effects when scaling up tidal energy in the

Oosterschelde. Needless to say, there is ample research

to be done, but Energising deltas was a big step in the

right direction.

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INTERVIEW MARTIJN VAN ROERMUND

Advisor Wind Farms at ECN

ECN“We envisage integrating other renewable energy sources into the Energising deltas concept, such as wind and solar energy.”

In cooperation with Deltares and Tocardo Tidal

Turbines, ECN was responsible for the technical

and scientific aspects of the turbine modelling

cluster in the Energising deltas project. Tidal energy

technology is still under development, so a lot

of knowledge is yet to be generated on both the

industrial and the scientific side. This project was

another good opportunity to work closely with

commercial parties in realising the Energising deltas

concept. The local nature of this project led to the

involvement of several small and medium sized

enterprises (SMEs) which we were able to support

with our scientific knowledge.

Energising deltas builds upon a previous European

Regional Development Fund project, which formed the

basis for the research questions addressed in this project.

As with any project, the available time and resources

encouraged the consortium to identify the most urgent

issues that arise when integrating tidal turbines in

waterworks. This was done in close cooperation with

Tocardo, by making a list of nice-to-haves and must-

haves. Together with the partners, a selection was made

on the topics to be researched within the scope of

this project.

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As a result, the Energising deltas project has provided

insight into three main aspects. Firstly, the inflow

characteristics of the water resource were studied.

Furthermore, we looked at the blockage effect of a

turbine in a channel flow. The outflow behaviour of the

water resource behind the turbine was then determined,

showing the wake effects.

Regarding the inflow conditions, we studied the speed,

direction and turbulence components. The basics

of water flow conditions are very similar to air flow

conditions, which enabled us to use our wind resource

models as a basis. The foremost result of this exercise

is the outcome of a sensitivity study done after each of

these components. We now know the importance of

these elements and their subsequent effects.

Tocardo specifically identified the blockage effect as a

critical research topic. This effect occurs in waterworks

when the opening through which the water flows is

partially blocked, in this case by a tidal turbine,

influencing the flow conditions in front of the turbine.

Subsequently, we composed a computational model

in which we could simulate the channel flow and thus

quantify the blockage effect. This proved to be a

complex and labour intensive undertaking, since many

secondary effects occur when the degree of blockage

increases. Because the blockage effect directly influen-

ces the potential yield of a turbine placed in a channel,

we also recommend further research into this topic to

achieve reliable results for higher degrees of blockage.

Currently, we can confidently say the model generates

reliable results for blockage degrees up to 20%.

The third and final subject we focused on was the wake

effect. This is interesting both for a single turbine and

for multiple turbines placed in an array. The water flow

is disturbed by the turbines, when extracting energy

from it.

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Think of passing a truck on the motorway, on a day

when there is a lot of wind. You can really feel the airflow

rocking your car. This is similar for an installation with

multiple tidal turbines, potentially influencing energy

production. In order to quantify this effect, we applied

our wake-model used for wind energy, called FarmFlow,

and made it suitable for dealing with water flows. With

this model we can now optimise the system lay-out for

multiple tidal turbines. The data can also be used as

input for sediment transportation models of Deltares.

“The toolset that forms the basis of these models can be used to model any tidal turbine in any location.”

The composed computational models are very location

specific and specifically applied for Tocardo Tidal

Turbines. However, the toolset that forms the basis of

these models can be used to model any tidal turbine

in any location. We therefore hope that any follow-up

project will involve more partners, resulting in even

more comprehensive outcomes and adding to further

knowledge dissemination. Additionally, we envisage

integrating other renewable energy sources into the

Energising deltas concept, such as wind and solar energy.

This would enable a more diverse and all round energy

generation of the waterworks. We also believe we can

add value to this, as ECN has extensive knowledge and

experience in these areas. Beside the engineering know-

how, we could determine the right mix of all integrated

renewables technologies for example.

As always, answering one question often raises

other questions, which is also the case in Energising

deltas. After proving technical feasibility, subjects like

operation and maintenance, cost optimising and life

cycle maximisation will follow. ECN looks forward to

help expanding existing knowledge on these subjects

and further establishing Energising deltas as a Dutch

export concept.

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The Department of Public Administration of the Erasmus University

Rotterdam has performed a considerable amount of research towards

organising multi-functional public works and the Energising deltas

concept is a good example of such a multi-functionality. Combining

waterworks with energy generation requires collaboration between

public and private parties. This is something that does not happen

by default, particularly in the Netherlands where the water sector

is strongly institutionalised. It is a challenging endeavour, since in

our country water management trigger a significant public interest.

We were therefore motivated to join this project and examine with

which arrangements these functionalities can be combined and how

agreements between public and private parties are established and

can be optimised. Due to this project we were also able to work

more closely with market parties and develop knowledge about this

concept together with them.

INTERVIEW ARWIN VAN BUUREN

Professor of Public Administration

at Erasmus University Rotterdam MIKE DUIJN

Senior Scientific Researcher of Public Administration at Erasmus University Rotterdam

ERASMUSUNIVERSITYROTTERDAM“We dare to state: if the Energising deltas concept can be realised in the Netherlands, it can be realised everywhere.”

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Focusing on collaboration between private and public

parties, within the Energising deltas project we examined

four Dutch projects that combine energy and waterworks,

such as the Brouwersdam, the Afsluitdijk and the Tidal

Technology Centre in Grevelingendam. We also examined

one project in the UK as a reference. We surveyed project

managers of infrastructural public-private collaboration,

which enabled us to identify and examine critical

process elements, what issues arise, how these issues

are addressed and how to optimise these processes.

We also performed a literature analysis to gain insights

into success factors of public-private partnerships and

organised several workshops to discuss our preliminary

results and consult with multiple governmental authorities,

businesses and other research institutes. This delivered

four distinct asset management styles of public agencies,

with some styles being more supporting to initiatives such

as the Energising deltas concept than others.

“We see many governmental organisations struggling with how to optimise their asset management and how to give more room for private initiatives. Our research provides them with perspectives on how to create more added value with public works.”

Based on these various research activities we have compo-

sed a governance model consisting of four phases that have

to be mastered simultaneously: idea and coalition forming,

the societal business case, the decision making arrangement

and the implementation and maintenance. We defined the

most critical activities for each phase and subsequently

described ways and methods to perform these activities.

In addition, we formulated six organisational arrangements

(‘scenarios’) that can be used to develop an Energising

delta application. In combination with the identified asset

management styles, we consider this to be one of the most

important outcomes, since it transcends the Energising

deltas concept and can be applied in a multitude of similar

situations. A final aspect we addressed is the international

application of the concept; what governance factors have

to be taken into account to realise the Energising deltas

concept over across the border, with specific emphasis on

the region of Southeast Asia?

“One of the most important observations regarding realising sustainable Energising deltas is defining a multiple societal business case.”

Our research can be applied by the consortium partners,

but is also of interest to governmental organisations in

search of (multifunctional) energy neutral infrastructures

and assets by means of public-private collaboration. It can

be utilised as a building block in the transition of energy

systems. We see many governmental organisations

struggling with how to optimise their asset management

and how to give more room for private initiatives. Our

research provides them with perspectives on how to

create more added value with public works. In turn,

the framework enables private parties to explore such

possibilities together with public parties and perhaps

induce a more initiating role.

One of the most important observations regarding

realising sustainable Energising deltas is defining a multiple

societal business case. When a business case is built solely

around energy generation and if societal externalities

such as additional employment, environmental gains or

knowledge development are excluded, it is challenging

to build a healthy business case. It is therefore important

to examine the optimal scale along which a business case

can be composed and which aspects can be attributed to

which parties in order to improve it. However, currently

we see governments endorsing the positive effects of

projects like Energising deltas, but they remain unwilling

or abel to translate this business cases that exceed their

own interest with regard to water management tasks. One

could use advantages such as security of supply, currently

attributed to the oil and gas industry. Both tidal energy

and salinity gradient energy are available continuously

and not dependent on the weather. In terms of base load

volume these sources can have a significant added value,

with the potential to maintain network voltage and thus

reducing network balancing costs. These kinds of values

are hard to quantify, but they still be made plausible with

robust arguments and a clear line of reasoning.

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We dare to state: if the Energising deltas concept can be

realised in the Netherlands, it can be realised everywhere.

The specific activities differ per location, but our research

provides a framework of what factors need to be dealt

with in order to realise the Energising deltas concept

and how it can be applied internationally. When going

abroad it is important to realise the significant impact

a small scale application of the concept can have,

especially in developing countries. Realising a concept

such as Energising deltas is usually part of a larger delta

development plan. It can boost the local economy

because energy production and distribution can take

place without constructing energy networks these areas

cannot afford. Although larger projects might seem

more profitable, projects like these can bring important

publicity and experience.

This project will be concluded with a final report, followed

by an executive summary, factsheets about the case

studies and a background report. As for the scientific

publications this project initiated; together with Antea

Group we have already published three papers on public

asset management styles and are in the process of writing

a scientific paper about the role of governments in

innovative projects like Energising deltas. This topic will

become the core of an academic thesis for one of our

employees. Two related research papers on this project

will also be published. Apart from publications, this

project also led to future research questions. For example:

which institutional adjustments are necessary to facilitate

multifunctional waterworks? We would also like to expand

our knowledge on public asset management styles and

translate these into a process design: which governance

arrangements can be used to realise multifunctional

assets when a certain asset management style is applied?

Another subject would be refining our governance model

by applying it in a real project.

“The development of the Energising deltas concept will continue and it is vital to continue to follow these processes in order to learn. Only too often do we see the wheel reinvented.”

It is self-evident that one answer can inspire other

questions. The development of the Energising deltas

concept will continue and it is vital to continue to follow

these processes in order to learn. Only too often do we

see the wheel reinvented. Therefore we are pleased to see

that many issues raised in this project will be addressed in

future projects.

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INTERVIEW PAULIEN KOOISTRA

Senior Project Manager European Relations at Energy Valley Foundation

ENERGY VALLEY“The research in this project, such as the framework developed by the Erasmus University Rotterdam, forms a solid basis for further developing the Energising deltas concept.”

Energising deltas revolves around generating

energy from water, which is an important innovation

and contributes to national sustainability goals. With

technological challenges on the one hand and the

creation of stimulating conditions on the other, this

project boosted the activities of several small and

medium sized enterprises (SMEs). Simultaneously,

the local nature of the Energising deltas concept

enables regional development and encourages

economic expansion in the region. This is why Energy

Valley Foundation, being a cluster organisation

aimed at stimulating economic growth in the

Northern provinces of the Netherlands, participated

in Energising deltas.

Energy Valley primarily performed a network function

and was responsible for the communication around the

project. Based on a communication plan, the project

was branded with the Energising deltas logo, website

(www.energisingdeltas.com), factsheet, banner and

several presentations and videos.

Energising deltas creates a cross-over between the

energy sector and the water sector. Within these sectors,

we aimed to reach as many interested parties as possible

and inform them about the future commercial potential

of the Energising deltas project. Since the Energising

deltas partners envisage developing an export product,

a large part of our endeavour was also to inform and

involve the international community.

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Apart from receiving visitors on the testing sites and

enthusing them about the possibilities, we organised

a great many workshops and attended national and

international congresses and events. A good example

of a national event is the Clean Tech Business Day. We

also presented the project on the Hannover Messe, the

largest international technology fair in Europe, where

many of the consortium partners were also present.

There we presented the Energising deltas video,

informing stand visitors about the project partners and

their activities.

The cooperation of stakeholders, national as well as

international, was shaped through several meetings,

workshops and other activities. Nationally, the testing

facilities within Energising deltas started to collaborate

closely and shared their findings. We also worked

together with ‘Top Sector Energie’, a government

incentive aimed at strengthening the Dutch economy

through clean and efficiently generated energy, as well

as other Dutch governmental agencies.

“Together with Scottish and Portuguese Action Group Partners, the Energy Valley Foundation is now focusing on gathering input for a new subsidy programme in 2020.”

On an international level, the Energising deltas project

greatly contributed to the establishment of the new

European Action Group ‘Energy & Water Works’. This

action group was initiated within the framework of the

European Innovation Partnership on Water, which aims

to enhance European interest in innovative crossovers

between energy and water in the development of policy,

markets and knowledge, and to further the relevant

industrial policies. In this light, a successful seminar

was organised during the EU Sustainable Energy Week.

Knowledge on the Energising deltas project was further

disseminated and developed through forum discussions,

talks on the newly stated Action Group and the latest

developments in the field of energy and water. Together

with Scottish and Portuguese Action Group Partners,

the Energy Valley Foundation is now focusing on

gathering input for a new subsidy programme in 2020.

We have also organised a workshop for Dutch parties to

inform them about the available EU subsidy programmes

and encouraged them to bring specific cases to the

table to assess which subsidy programme fits.

The preliminary results of the Energising deltas project

have been presented at a national conference last

February. As part of our activities, this brochure and

of course the website will be used for international

dissemination of the results. By attending many

related events, we were able to highlight the goals and

activities of the Energising deltas project. We were also

honoured to welcome many notable visitors, including

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Maroš Šefcovic, vice president of the Energy Union, the

Dutch King and Queen Willem-Alexander and Maxima

and Melanie Schultz van Haegen, Dutch Minister of

Infrastructure and the Environment.

Energy Valley focuses on a multitude of energy issues

and aims at a catalysing function in disseminating tools

and insights, whilst helping SMEs access European

funds. In future endeavours we expect to integrate these

efforts even more and stimulate regional economic

development. The research in this project, such as

the framework developed by the Erasmus University

Rotterdam, forms a solid basis for further developing

the Energising deltas concept. There is, however,

still a lot of collaborative work to be achieved before

sustainable energising deltas can be realised to their full

potential. The government could alleviate the workload

by creating experimental space by temporarily removing

barriers and restrictions and thus stimulating a more

efficient development of the Energising deltas concept.

“By attending many related events, we were able to highlight the goals and activities of the Energising deltas project. We were also honoured to welcome many notable visitors.”

ˇ ˇŠefcovic,

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CONCLUDING REMARKS

36

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How do you successfully organise, design, build and operate a concept such as Energising deltas in

terms of governance, energy performance and environmental impact? Answering this question was

the primary goal of the Energising deltas project. Commercial partners were in the driver’s seat. They

posed their questions to the research institutes which, in turn, provided them with answers. The

result was a competitive advantage in both domestic and global markets. Many questions have been

answered indeed and although some answers generate new questions, we made substantial progress

in gaining knowledge and insights on the topics examined. The following summarises the main findings

from this inspiring project.

GOVERNANCE OF INTEGRATED ENERGY AND WATER WORKSRealising a concept such as Energising deltas (an

integrated water – energy work) is a non-linear activity.

It requires simultaneous exploration of the project

idea (functional scope), a ‘coalition of the willing’, the

societal argumentation (the ‘story line’), the public-

private collaboration and the exploitation model after

the construction has been completed.

To improve the process of public-private collaboration,

it is important to invest in mutual trust, openness and

reciprocity. An independent process facilitator accepted

by the key parties can contribute to such a process.

The same is true for a transparent and accessible

development process that includes key actors and works

along clear pre-set and iterative steps. In this process it is

important each partner knows its role in the project and

that confusion is avoided.

All actors should be willing to do something more than

their ‘core business’ and their responsibilities should

not be too narrowly defined. Otherwise, invincible role

gaps impede the realisation of an integrated water and

energy work.

Successfully realising integrated energy and water works

highly depends upon:

• the cooperation of the public asset manager and his

willingness to facilitate multifunctional use of the water

work. In addition, a learning and collaborative attitude

towards the consequences of co-use is more beneficial

than a risk avoiding and a ‘go-alone’ strategy.

• realising this type of integrated innovative water

works requires a more explorative and open attitude

of the public asset manager. This is quite difficult due

to the strict conditions set by the asset owner and

the culture of risk minimisation that dominates asset

management. At the same time, private actors have to

acknowledge the specific responsibility of the public

asset manager and his limited room for manoeuvre.

• broadening the business case and including the

wider benefits of realising an integrated water and

energy work (recreation, knowledge development,

employability, etc). In addition, it is necessary that all

public and private actors acknowledge these various

(indirect) effects and are willing to translate them into

a financial or organisational contribution. A multi-

value business case that connects short term and long

term, public and private interests is the only viable

basis for an integrated energy and water work.

There are various governance arrangements available

to organise an integrated water and energy work,

such as a permit combined with a rental contract or an

integrated contract based upon availability pricing. The

choice for a specific arrangement highly depends upon

the preferences of the public asset manager (keeping

private functions at a distance or incorporating them

into the business; risk taking or risk avoiding, etc).

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38

DEVELOPMENT OF IMPACT ASSESSMENT TOOLSThe development of the impact assessment tools

focused on two types of energy from water: tidal stream

energy and salinity gradient energy (based on reverse

electro-dialysis technology), applied in barriers or dams.

Research focused primarily on hydrodynamics and

environmental effects of the Oosterschelde storm surge

barrier and the Afsluitdijk, a major closure dam along

the Western part of the Wadden Sea.

After consultation with the industrial project partners,

priority was given to CFD modelling of tidal turbines

in hydraulic structures, the water resource used as

input for the turbine models, the effect of blockage

on the channel flow and how to characterise a wake

behind a tidal turbine. For optimising salinity gradient

power, modelling of seasonally varying salt and silt

concentrations was required. For both technologies,

developing a way to identify and characterise environ-

mental effects was also on the priority list.

In terms of computational models and methods, this led

to the following results:

• The feasibility of CFD modelling of tidal turbines

in hydraulic structures was demonstrated for the

Oosterschelde storm surge barrier and validated as

far as possible. Combined with existing far-field flow

models such as Delft3D, this provides an innovative

instrument to describe the most important flow

effects and patterns for near- and far-field.

• A generic evaluation instrument for ecological effects

has been demonstrated, providing a framework for

application to specific (renewable) energy techniques

in different areas.

In terms of the design parameters for optimising power

production and minimising environmental effects of

tidal stream energy and salinity gradient energy (blue

energy):

• Tidal Stream Energy: The instruments help to

› better understand the water resource used as input

for the turbine models, the effect of blockage on

the channel flow and how to characterise a wake

behind a tidal turbine;

› determine both the loading by the currents on the

turbines and the effects of the turbines on tidal

dynamics or discharge capacity of the hydraulic

structure, needed for optimal power generation;

› provide the basis for determination of environ-

mental effects.

Taken together, this forms a powerful tool set that

can be used as a basis for further detailing of the

Energising deltas concept or for preliminary design

of such a concept in the early phases of a water

management project.

• Blue Energy: The instruments help to

› choose the position and level of water intake,

dealing with the conflicting requirements of high

salinity and low concentration of suspended

solids at the intake point;

› optimise the position of the salt water intake and

the outfall of mixed water to reduce recirculation

of mixed water.

Both aspects can optimise power generation and

hydrodynamics, which can be used as basis for

assessing environmental effects.

• The framework for the analysis of ecological effects

was applied to tidal turbines in the Oosterschelde

storm surge barrier and in the Lorentz sluices at

Kornwerderzand (Afsluitdijk). The latter case involves

an important fish migration route. Expert partners

such as IMARES examined the effects and identified

the issues.

• The framework for the analysis of ecological effects

was also applied to blue energy at Breezanddijk

(Afsluitdijk). Of the issues identified, the effects

on the occurrence of algae blooms and possible

changes in food availability for the numerous mussel

beds were investigated further by applying a primary

production model, which has been improved to

reproduce the effects of salinity changes on algae

more accurately.

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39

KNOWLEDGE DISSEMINATION AND STRUCTURAL COOPERATIONThe project significantly contributed to the awareness

that Dutch companies active in delta-technology and

energy-from-water technology have developed an

export product with great worldwide potential. For this

reason the project was carried out in the framework of

the Dutch Top Sector Water. The strong position of these

combined technologies was underlined by site visits of

the Dutch King Willem-Alexander, national Ministers of

Economic Affairs and Infrastructure and the Environment

and numerous regional deputies. The preliminary results

of het project were presented at several national and

international events, for example during the Hannover

Messe 2014, the Cleantech business day, the INES

network sessions and the EU Sustainable Energy Week

–Eusew. Ocean Energy members will be informed about

the Afsluitdijk pilot projects on tidal and salinity gradient

energy during the annual Interreg B conference in

the Netherlands. The project partners also played an

important role in establishing the European Innovation

Partnership Action Group Energy and Water Works. This

action group is supported by Energising deltas partners,

together with partners from abroad, and delivers useful

input for the Horizon 2020 working programme.

VALORISATION OF RESULTSThe project’s results regarding optimising energy

generation, minimising ecological effects and optimal

governance processes and requirements will accelerate

the determination of the feasibility of the concept

and the identifying of any possible hurdles. The next

step will be the application of tools in new and/or

projects in progress. The Dutch home market offers

outstanding chances for demonstrating energy-from-

water technology and delta-technology, as combined

in the Energising deltas concept. Therefore, building

showcases to gain interest and convince decision

makers and investors globally is vital to boost the export

market. The Dutch Water Authority board, the Ministry

of Economic Affairs and the Ministry of Infrastructure and

the Environment are challenged to facilitate this and,

together with the Dutch industry, create the conditions

to make it happen.

More detailed information and results of the

project Energising deltas will be available on

www.energisingdeltas.com.

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COLOPHON

Energising deltas is a consortium of eight partners working together

to combine sustainable energy generation with water safety and

water management into an innovative export product.

Partners

Deltares REDstack

ECN Strukton / Antea Group

Energy Valley Foundation Tidal Testing Centre

Erasmus University Rotterdam Tocardo Tidal Turbines

The project is funded by the European Regional Development Fund

(ERDF), Opportunities for West and co-financed by the Province of

Noord-Holland.

June 2015

Copywriting, photography and design: iMAGO

Coordination: Carina Havenga de Poel, Energy Valley Foundation

Front cover photo: “Oosterscheldekering”. Source:

https://beeldbank.rws.nl, Rijkswaterstaat, Joop van Houdt

Page 18 photo: “Flakkeese spuisluis”. Source: Rijkswaterstaat

Page 23 photo: “Gull on dike”. Source: Deltares, Guus Schoonewille

Page 36 photo: “Delta”. Source: Deltares, Ewout Staartjes

www.energisingdeltas.com

40

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Energising deltas - Worldwide opportunities