Monthly Archives: March 2010

John Petersen Last week I introduced a new study titled "Energy Storage for the Electricity Grid: Benefits and Potential Market Assessment" that was commissioned by the DOE's Energy Storage Systems Program, identified seventeen discrete storage applications for the electricity grid, discussed the technical requirements of each application and summarized the potential economic benefits. If the Yahoo! message boards are any indication, investors are already jumping to inaccurate and wildly optimistic conclusions because they don't understand that many storage applications are synergistic and every storage system purchaser will try to maximize the value of its investment by capturing...

John Petersen The California Energy Storage Alliance just issued a press release that describes new legislation to require utilities to incorporate energy storage in their distribution networks. The rules will mandate storage equal to 2.25% of daytime peak power by 2014 and 5% of daytime peak power by 2020. The press release is available here. A quick check of the California ISO website forecasts a peak load of approximately 29,000 MW for tomorrow. If one assumes an average peak demand of 30,000 MW, a 2.25% storage penetration would require an annual storage build of 135 MW per...