Casi studio e applicazioni dell’energy storage in mercati ... · with Battery+PV 2014 2016 2018...
Transcript of Casi studio e applicazioni dell’energy storage in mercati ... · with Battery+PV 2014 2016 2018...
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Casi studio e applicazioni dell’energy storage in mercati avanzati
Davide Alfonso Project Manager – E.ON Energy Storage Solutions
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Agenda
Il mercato dello storage: drivers e tecnologie 1
3 Casi studio e applicazioni nel Regno Unito
Casi studio e applicazioni in Germania 2
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Agenda
Il mercato dello storage: drivers e tecnologie 1
3 Casi studio e applicazioni nel Regno Unito
Casi studio e applicazioni in Germania 2
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Dramatic changes are happening in the energy system
* Diagram Source: EPRI
Centralised Decentralised
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Emergence of commercial battery storage
Technical
challenges
Economic
challenges
Regulatory
challenges
Performance
Life length
Efficiency
High costs
Lack of clear definition
Legal framework
designed for existing
electricity system
Driven by a combination of technical, economic and regulatory challenges.
Advanced technologies
Lower costs New business models
Regulatory rulings
Policy action
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Among available technologies, lithium-ion batteries stand
out as a mature and most available solution
Energy
storage
Batteries
Electro-
mechanical
Thermal
Pumped
hydro
Lithium-ion
Other Solid
Flow batteries
Heat Thermal
Flywheel
Solar Thermal
Ice Thermal
Compressed air
Technology
maturity
Storage
duration
Energy
density Cost
Best in class Worst in class
Relatively low price
High modularity/
scalability
Technological
simplicity
High energy
efficiency
High energy density
LI-ION batteries : Most
promising technology
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Il mercato dello storage: drivers e tecnologie 1
3 Casi studio e applicazioni nel Regno Unito
Casi studio e applicazioni in Germania 2
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The emergence of residential battery storage to maximise
PV energy self-consumption
Expanding gap between PV-LCOE and
electricity prices leading to Battery-parity
Rooftop solar makes up the largest part of
Germany’s 40GW installed solar capacity
Key drivers
1
2
Increased Self Consumption
with Battery+PV
2014 2016 2018 2020 2022 2024 2026
EU
R
Retail price
Feed in tariff
Increasing spread between retail prices & FiT
PV Generation Power demand
Improving Battery Economics
Increased self consumption
PV-battery systems could reach an annual
installation volume of around 50,000 units
by 2020
Self consumption,
w/o battery
Self consumption,
with battery
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“E.ON Aura” : 4 blocks for economical residential power
self-sufficiency Usable storage capacity : 4.4 kWh ,
expandable to 11 kWh
Overall efficiency ( round-trip ) : 93 %
E.ON Aura Solar E.ON Aura Storage E.ON Aura Manager E.ON Aura Strom
E.ON Aura Solar
Generates electricity from PV
E.ON Aura 500
Stores electricity produced from PV
AC-Sensor 50 Storage metering
E.ON Aura App informs and visualises
E.ON Aura Controller measures and controls
energy flows
E.ON Aura Strom
provides green electricity when the sun is shining too
little
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Case study: Pellworm
Island with 1,000 inhabitants / 600 homes
Renewable generation: 22 GWh pa.
Consumption only 7 GWh pa.
But sometimes insufficient generation to meet
demand
Multiple battery technologies utilised
Needed to meet different system requirements
All assets integrated into centralised island
energy management system
Operating as a single ‘hybrid’ battery system
Lithium ion
battery
1 MW, 560 kWh
Redox-flow
battery
200 kW, 1600 kWh
Electrical
storage heaters
Total: 195 kW, 780 kWh
Residential
batteries
Total: 80 kW, 80 kWh
Key Parameters
Sale of renewable energy on spot & reserve markets
Provision of local grid services (avoid curtailment,
etc)
Maximising self-consumption of local renewables
Exposure to different upstream business models
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Il mercato dello storage: drivers e tecnologie 1
3 Casi studio e applicazioni nel Regno Unito
Casi studio e applicazioni in Germania 2
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The UK electricity grid is becoming increasingly instable
12
Source: National Grid
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The Enhanced Frequency Response (EFR)
Technical requirements:
• Response within 1s from occurrence of frequency deviation
outside of 15mHz deadband
• Bidirectional response proportional to frequency deviation
• Up to 15 min response in either direction
• Technology agnostic
Tender facts and figures
• 243 tender options, at 64 different sites, by 37 companies.
• Only 8 bids accepted, totalling 201 MW
• Clearing price of £11.97/MW-h
• All 8 contracts awarded to batteries
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The E.ON Blackburn Meadows project
Project overview
• 10MW/5MWh Li-Ion Battery system
• Co-located with existing 30 MWel biomass
CHP plant in Sheffield
• System footprint: 4x40ft ISO containers,
approximately 30mx30m
• Construction started in Jan 2017, COD
expected in Sept 2017
Current revenue streams
• 4 year Enhanced Frequency Response
(EFR) contract worth £11.09/MW-h
• 15 year Capacity Market (CM) contract
worth £22.50/kW-year
E.ON is building one of the first commercial battery projects in the UK
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Grazie per l'attenzione