EPRI announces availability of "Electricity Energy Storage Technology Options - A White Paper Primer on Applications, Costs and Benefits."The white paper presents the results of a comprehensive analysis of energy storage applications and technology options and assesses the potential benefits and markets for energy storage in the U.S.Among the technologies covered are pumped storage hydro, which provides storage to support system andrenewables integration. The report says pumped storage is the most widely used form of energy storage, with more than 127,000 MW installed worldwide. EPRI says this is a mature technology with an efficiency of 80 to 82 percent that costs $2,500 to $4,300 per kW or $420 to $430 per kWh. The white paper indicates the primary constraints to this technology involve identifying developable sites, environmental permitting and available transmission assets.
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