Electricity storage vs. solar thermal electricity · STE in recent/forthcoming IEA publications...

Electricity storage vs.solar thermal electricity

Cédric Philibert

Renewable Energy Division

International Energy Agency

ESTELA Workshop 2016 – 29 September, Brussels

STE in recent/forthcoming IEA publications

Energy Technology Perspectives 2016

STE in 2050: 224 GW to 632 GW (4DS/2DS) – 900-2545 TWh

Medium-Term Renewable Energy Market Report (24/10)

Prospects for STE virtually unchanged ~10 GW by 2020

World Energy Outlook 2016 (16/11):

Last year (WEO 2015), STE in 2040: 262 to 937 TWh (NPS/450)

This year: Large increase in PV projection, significant increasein wind, small decrease in STE

Energy Technology Perspectives 2017

« Well below 2° Scenario »: STE up to 2060?

Storage needs for large shares of variable RE

Hourly/daily storage for solar PV and wind

Interseasonal storage usually not cost-effective

Interseasonal mismatches could be addressed through the right RE portfolio + peaking plants

Potential for storage in selected regions

Attractiveness of storage is highly context-specific, but increases greatly across all scenarios (ETP)

Depending on the system, flexibility from demand response could provide greater returns

Role of storage is defined by applications in power grids

Pumped-storage hydropower dominates

Thermal storage in

CSP plants

~1500 MW• Arbitrage

• Weekly storage

• Black start

• « Flexing » power

system w. variable RE

after nuclear power…

Reservoir

hydropower

~ 500 GW?

Still large potential for new-built PSH plants

Seawater PSH can be competititve

Valhalla project: 600 MW PV + 300 MW seawater PSH

Cost trends – a breakthrough in sight?

PV + battery: an emerging threat for CSP

Possible roles of storage in CSP plants

Thermal storage canbe used to shift production, to extendit to base load or to concentrate it to super peak load © OECD/IEA, 2011

Complementary roles of PV and STEIEA Technology Roadmap (2014)

Thanks to thermal storage, STE is generated on demand when the sun sets while demand often peaks and value of electricity increases

Near-full power decarbonisation(of a much larger power system)

39%18%

Roles of storage in the energy system

Improving energy system resource use efficiency

Helping to integrate higher levels of variable renewable resources

Improving electricity grid stability, flexibility, reliability and resilience

Allowing electrification of transport

Increasing energy access off grid

Maximising self-consumption w. distributed generation

Supporting greater production of energy where it is consumed, alleviating congestion issues

Electricity storage vs. solar thermal electricity · STE in recent/forthcoming IEA publications...

Documents

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