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Integration of energy storage into unit commitment and electricity markets

Energy storage has traditionally been viewed as a means of reducing system peaks and filling demand troughs, so called energy arbitrage, in order to reduce system operational costs and avoid decommitment of inflexible nuclear generation plant. In recent years, the increased share of variable renewables, in particular wind and solar PV generation, has caused many system operators to consider the underlying flexibility of the power system. Storage plant has the potential to contribute here on various timescales (sub-hourly and upwards), and to obtain additional revenue streams from newly emerging system (ancillary) service products. However, with many system operators not permitted to own or operate storage plant, commercial ventures have the challenge of determining optimal storage scheduling, for an energy limited plant with limited knowledge of current and future system-wide conditions.

Author(s):

Damian Flynn    
University College Dublin
Ireland

 

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