HOMER Energy: Perspectives on Advanced Energy Storage

Editor's Notes

8. ­­­­­­­­­­But there are too many choices
10. If renewable penetrations are in the single digit %s you don’t need storage The most obvious application of storage involves charging all day when the sun shines and discharging at night. Potentially cost-effective with thermal storage and pumped hydro, hopelessly uneconomic with batteries. All is not lost because in between these two extremes there is a huge role for storage to keep the variability of renewable resources from playing havoc with the rest of the system.
11. It is easy to get overwhelmed by the variety of ways that storage could add value. Recently reviewed 3 different reports Each listed 15-20 different applications Overlapping and inconsistent definitions Reliability can be backup or reserves Power quality can be frequency control, voltage control, VAR support Economics can be arbitrage, eliminate curtailments, prevent inefficient operation of other plants. Distributed resources are the only way to provide the highest levels of reliability