Enel Green Power
Integration of Storage System with RES
Riccardo AmorosoChief Innovation and Sustainability Officer
Naples, October 16th 2015
› Massive renewables growth expected worldwide
› Outstanding opportunities in Latin America, Africa, Middle East and Asia: areas with enormous untapped potential and with still conservative growth estimates
Worldwide RES trends2000 – 2030 Additional Capacity by Area
8431.326 1.436 1.551 1.680 1.814
2.790
5.160
2000 2010 2011 2012 2013 2014 2020 2030
Africa &Middle EastAsia andPacificLatinAmericaNorthAmericaEurope
CAGR:+4.6%
CAGR:+8.1%
CAGR:+7.4%
CAGR:+6.3 %Installed Capacity (GW)
Sources: National TSOs, Enerdata, IEA, EER, GWEC, EWEA, IRENA, Global Data, EPIA-SPE (2000-2013 figures). EGP estimates based on national plans, Government targets, WEO, IEA “Medium Term renewable energy report”, GWEC, EWEA, SPE-EPIA, BNEF (2020-2030 figures).
2
In Italy electricity flow is no more unidirectional, from big power plants to final clients.
Power requested from TSO grid [MW]
0
10.000
20.000
30.000
40.000Mon 30 Aug 2010Mon 29 Aug 2011Mon 27 Aug 2012Mon 26 Aug 2013Mon 25 Aug 2014
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
-42%
Number of transformers HV/MV with inverted flow of energy between 2010 and July 2014:
+257%
Impact of distributed generation on the grids
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Clear sky day Cloudy day
‐100
0
100
200
300
400
500
600
700
800
16/03/2014 19:12 17/03/2014 00:00 17/03/2014 04:48 17/03/2014 09:36 17/03/2014 14:24 17/03/2014 19:12 18/03/2014 00:00
Average Output Power [kW] Maximum Output Power [kW] Minimum Output Power [kW]
‐100
100
300
500
700
900
1100
21/03/2014 19:12 22/03/2014 00:00 22/03/2014 04:48 22/03/2014 09:36 22/03/2014 14:24 22/03/2014 19:12 23/03/2014 00:00
Average Output Power [kW] Maximum Output Power [kW] Minimum Output Power [kW]
PV power plant:• Large Variation in few minutes in case of cloudy days
• Good average forecast
Wind power plant:• Large amount on power changing within minutes • Potential On-Off behavior in case of strong wind• More challenging forecast compared to PV
Time-window for energy
release
0
200
400
600
800
1000
1 21 41 61 81 101 121 141 161 181 201 221 241
Threat or opportunity
4
STATUS WITHOUT CURRENT AVAILABLE SYSTEM RESULTS STATUS WITH CURRENT
AVAILABLE SYSTEM RESULTS
ANCILLARY SERVICES
Frequency primary regulation
technically possible
available
Frequency secondary regulationtechnically possible
Frequency tertiary regulation
Reactive power supply / Voltage regulation commercially available
commercially availableBlack starttechnically possible
Islanding
ENERGY MANAGEMENT FUNCTIONS
Unbalances limitations
not possiblecommercially available
Energy time shift
Energy peak shaving
Advanced curtailment management technically possible
Services from Renewable Energy Sources
Frequency regulation: storage price currently a limitation for secondary and tertiary regulation Voltage regulation: commonly implemented Unbalances: storage supporting forecast, defining the proper sizing in Energy and Power; advanced forecast/nowcast techniques to limit the
amount of storage required Time Shift: amount of energy and market knowledge key factors Peak Shaving: deep investigation required in order to design the proper system in terms of power and energy 5
ESS worldwide utility scale projects in 2015: 120 MW+ Commissioned (550 MW+ announced by Q2)
Market still largely policy driven (focus in regions with favorable regulatory framework, in particular for demand charge management and
frequency regulation)
• EMEA: Increase in end-users market sales, mainly in Germany (10,000 system sold, fostered by the KFW subsidy program)
• Asia-Pacific: stable development in Japan and South Korea, Australia and India as emerging market
• Significant increase in USA (California, New York, New Jersey, Texas, Arizona, Washington and Hawaii)
Market jeopardized application-wise (grid support, Renewables integration) and technology-wise (preferred Li-Ion):
Outlook:
• ESS Renewable applications facilitated by cost-reduction trend (Tesla, Samsung, LGchem, Renault-Nissan-Bouygues)
• Strategic partnerships (Tesla Mega-factory with Panasonic involvement, Samsung battery supply for BMW , LGchem-Audi agreement)
• Renewable/hybrid system with energy storage as emerging business for grid limited/growth markets
• Retail Market: Tesla, Samsung, LG, Mercedes, Panasonic show a strong interest in retail market
Storage Market Evolution in 2015: Key Facts
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Global Market is expected to rapidly growfor utility scale for ESS
7
Storage costs are expected to strongly decrease in the future
Potential
Source: Navigant Research ‘’Advanced Batteries for Utility-Scale Energy Storage8
Possible business models
A
B
C
• Primary regulation• Secondary regulation• Terziary regulation• Reactive supply and Voltage control
Ancillary services
• Curtailments: due to transmission:• constraints and generator flexibility, energy• storage helps to increase grid flexibility and• reduce curtailment.
• Day/night
Price Arbitrage (Energy-shift, peak-shaving)
• Mitigate RES generation unbalance and reduce relevant penalties together with the improvement of weather forecast:• Day-ahead market• Intra-day market
Unbalance
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Catania 1 BESS Project – Overview
Rated Power: 10 MW (connection up to 8MW )
Year of COD: 2012
Grid connection: MV
Catania
To design, install and test a first full scale on-grid Battery Energy StorageSystem (BESS) integrated with the existing EGP Catania 1 PV Power plant
Project Description
Project Description
EGP Catania 1 PV Power Plant
ObjectivesObjectives
TimetableTimetable
To assess the integration between RES and BESS, testing differentBESS technologies to define the most appropriate for each application;
To verify the BESS benefits in terms of increased RES dispatchability(energy shifting and peak shaving) and provision of services for the grid(voltage and frequency regulations);
To acquire first hand O&M experiences with BESS technologies;
2014 2015
J F M A M J J A S O N D Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Site preparation and Installation Start Up
Plant Operation & Continuous O&M
Improvement
Project Preparation, site selection and BESS contract
negotiation
TODAY
Master Scada development and Experimental Activities
19/11/14Start site works
15/03/15Start commissioning tests
1/05/15Start experimental activities 10
1MW-2MWh Catania 1 BESS
Catania 1 BESS Project – RES dispatchability
UNBALANCINGREDUCTION
ENERGY SHIFTINGNight Production
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To design, install and test a full scale on-grid BESS integrated withthe Potenza Pietragalla WPP (18MW), in order to increase theprogrammability of RES and experimentally verify the possibility toexecute Energy Production programs and ancillary service supply.A lithium-ion 2MW/2MWh BESS will be tested, the first utility scaleapplication in Italy of a BESS integrated with a Wind power plant,connected to the HV line, by using the high efficiency and fastresponse lithium-ion technology.
Project Description
Description Next stepCurrent Phase
2014 2015
J F M A M J J A S O N D January February March April May June July August September October
Installation and authorization obtainment for connection to the HV grid Commissioning Experimental
activities
TODAY
Potenza Pietragalla BESS Project
CommissioningCommissioning
• Installation of the BESS completed;• Definition, of new grid code for BESS connected to the HV grid;• Commissioning activities with BESS connected to the grid almost completed, expected by
end of September; interesting results registered during tests (high efficiency• Remote control by PT (Global Generation) under development.
• Passed “Site Acceptance Test” → COD
• Operation & test
30/07 → Connection to the HV grid
Project Preparation and BESS contract negotiation
30/03→TPA signature30/03→Site work begin31/03 →contract signature
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g2MW/2MWh Potenza Pietragalla BESS
Pietragalla
EGP Potenza PietragallaWind Plant
Rated Power: 18 MW
Year of COD: 2012
Grid connection: HV
Other Storage applications in EGP
Microgridin Chile
Microgridin Kenya
Microgridin Peru
Retail PV+Storage
Status Objective/description
In execution
Advanceddevelopment stage
Advanceddevelopment stage
Under definition
The plant supplies the Ollagüe village (in Chile at 3700m above sea level) is a stand alone micro-grid of more than nominal 250kW, consists of solar power plants and wind turbines integrated with a sophisticated electrochemical storage system. The hybrid system thus produced is able to fully meet the electricity needs of the local community (about 300 people) and the public school heat demand, with recourse to the pre-existing diesel generator only in rare cases, and only for the winter months.
To sell photovoltaic systems and batteries to final residential clients who want to become independent from diesel generators
EGP is studying the best business case with the objective of shaping a profitable & replicable business model in order to develop productive, affordable, and reliable micro-grid electricity for rural homes and businesses
To contribute to socio-economic improvement of local population through sustainable economic development of aquaculture and artisanal fisheries in the south coast of Peru realizing a dedicated hybrid system
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Ollagüe