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Matt Rogers on AES Energy Storage

Matt Rogers, Senior Advisor to Secretary Chu, explain why grid frequency regulation matters

When thinking of clean technologies, energy storage might not be the first thing to come to mind, but with a $17.1 million conditional commitment for a loan guarantee from the Department of Energy AES Energy Storage will develop a battery-based energy storage system to provide a more stable and efficient electrical grid for New York State’s high-voltage transmission network.

Because grid frequency regulation – which is needed to balance power generation and consumption on the grid – is traditionally maintained by burning fossil fuels, grid stabilization often comes with the associated financial and environmental costs. By developing a 20 megawatt (MW) energy storage system using advanced lithium-ion batteries, the AES project will eliminate the need to burn fossil fuels and provide the same regulation at a lower price.

Having this advanced frequency regulation capability could potentially help reduce carbon emissions from today’s methods by 70 percent and will allow renewable electricity generation to play a larger role in New York’s transmission network – a huge step toward meeting the President’s goal of doubling renewable energy generating capacity by 2012.

To learn more about the Department’s conditional commitments for loan guarantees, visit