KETEP 세계에너지시장정보

The U.S. alone has installed more than 15 GW of energy storage, the report said, but it’s still difficult to determine how reliably those systems operate. EPRI said there appear to be indications that some storage systems face issues and lower reliability when compared to legacy electric utility assets.

Historic data for “commercially oriented” storage systems typically spans less than five years, the report said, and there is not much uniformity to the structure or extent of the data. However, there is plenty of reliability assessment data on legacy utility assets, as they have more than 30 years of operational data from a “wide variety” of equipment and manufacturers, the report said.