Casi studio e applicazioni dell energy storage in mercati avanzati. Davide Alfonso Project Manager E.ON Energy Storage Solutions

Transcription

1 Casi studio e applicazioni dell energy storage in mercati avanzati Davide Alfonso Project Manager E.ON Energy Storage Solutions

2 Agenda 1 Il mercato dello storage: drivers e tecnologie 2 Casi studio e applicazioni in Germania 3 Casi studio e applicazioni nel Regno Unito

3 Agenda 1 Il mercato dello storage: drivers e tecnologie 2 Casi studio e applicazioni in Germania 3 Casi studio e applicazioni nel Regno Unito

4 Dramatic changes are happening in the energy system Centralised Decentralised * Diagram Source: EPRI

5 Emergence of commercial battery storage Driven by a combination of technical, economic and regulatory challenges. Technical challenges Performance Life length Efficiency Advanced technologies Economic challenges High costs Lower costs New business models Regulatory challenges Lack of clear definition Legal framework designed for existing electricity system Regulatory rulings Policy action

6 Best in class Worst in class Among available technologies, lithium-ion batteries stand out as a mature and most available solution Technology maturity Storage duration Energy density Cost Pumped hydro LI-ION batteries : Most promising technology Lithium-ion Batteries Other Solid Energy storage Electromechanical Flow batteries Compressed air Flywheel Relatively low price High modularity/ scalability Technological simplicity Solar Thermal High energy efficiency Thermal Ice Thermal High energy density Heat Thermal

7 1 Il mercato dello storage: drivers e tecnologie 2 Casi studio e applicazioni in Germania 3 Casi studio e applicazioni nel Regno Unito

8 EUR The emergence of residential battery storage to maximise PV energy self-consumption Key drivers Increased self consumption 1 Increased Self Consumption with Battery+PV Power demand PV Generation Rooftop solar makes up the largest part of Germany s 40GW installed solar capacity Self consumption, w/o battery Self consumption, with battery 2 Improving Battery Economics Increasing spread between retail prices & FiT Expanding gap between PV-LCOE and electricity prices leading to Battery-parity Feed in tariff Retail price PV-battery systems could reach an annual installation volume of around 50,000 units by

9 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 E.ON Aura App informs and visualises E.ON Aura Strom provides green electricity when the sun is shining too little AC-Sensor 50 Storage metering E.ON Aura Controller measures and controls energy flows

10 Case study: Pellworm Key Parameters 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 Exposure to different upstream business models Sale of renewable energy on spot & reserve markets Provision of local grid services (avoid curtailment, etc) Maximising self-consumption of local renewables Lithium ion battery 1 MW, 560 kwh Redox-flow battery 200 kw, 1600 kwh Residential batteries Total: 80 kw, 80 kwh Electrical storage heaters Total: 195 kw, 780 kwh

11 1 Il mercato dello storage: drivers e tecnologie 2 Casi studio e applicazioni in Germania 3 Casi studio e applicazioni nel Regno Unito

12 The UK electricity grid is becoming increasingly instable Source: National Grid 12

13 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

14 The E.ON Blackburn Meadows project E.ON is building one of the first commercial battery projects in the UK 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

15 Grazie per l'attenzione