The difference between energy storage capacity compensation and capacity management

Should capacity remuneration mechanisms account for the value of electricity storage?

Capacity mechanisms should account for the capacity value of electricity storage. In electricity markets around the world, the substantial increase of intermittent renewable electricity generation has intensified concerns about generation adequacy, ultimately driving the implementation of capacity remuneration mechanisms.

How does a capacity mechanism affect electricity storage?

Barriers exist for electricity storage to participate in some capacity mechanisms. Specification of a capacity mechanism affects technology mix and generation adequacy. Call options with a strike price increase the competitiveness of electricity storage. Low storage capacity credits create a strong bias towards conventional power plants.

Can energy storage reduce the need for New Generation Investment?

Where capacity markets exist, storage can provide capacity similar to traditional generators, reducing the need for new generation investment. A study by Sioshansi et al. demonstrated that the capacity value of an energy storage device with eight hours of storage would nearly be equal to its rated capacity.

How does a capacity mechanism affect power generation adequacy?

Specification of a capacity mechanism affects technology mix and generation adequacy. Call options with a strike price increase the competitiveness of electricity storage. Low storage capacity credits create a strong bias towards conventional power plants. Capacity mechanisms should account for the capacity value of electricity storage.

How does capacity remuneration affect storage investments?

The additional capacity remuneration then leads to more storage investments as compared to an EOM. This effect is particularly important in countries with high capacity needs in the medium-term (2030–2040), where storage technologies are still rather expensive to build. 4.4.3.

Are capacity remuneration mechanisms technology-neutral?

Although formally technology-neutral, substantial barriers often exist in these mechanisms for non-conventional capacity such as electricity storage. In this article, we provide a rigorous theoretical discussion on design parameters and show that the concrete design of a capacity remuneration mechanism always creates a bias towards one technology