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Its Electric Grid Under Strain, California Turns to Batteries

Last month as a heat wave slammed California, state regulators sent an email to a group of energy executives pleading for help. “Please consider this an urgent inquiry on behalf of the state,” the message said.

Opinion: Blackouts Expose Need for Expanding Energy Storage

The sad reality is that the blackouts rolling across California this past week were both predictable and avoidable. The silver lining is that future blackouts across California are avoidable – if we invest in large-scale energy storage projects to provide on-demand power.

Energy analysts have warned for years that California’s embrace of renewable energy sources – while laudable – create significant risks that can and should be addressed to sustain our economy and quality of life while maintaining progress toward the state’s climate goals. What no one could have known was that we’d be roiled by a pandemic and a recession when the energy grid’s weaknesses were exposed for everyone to see.

Opinion: Blackouts Expose Need for Expanding Energy Storage

The sad reality is that the blackouts rolling across California this week were both predictable and avoidable. The silver lining is that future blackouts across California are avoidable – if we invest in large-scale energy storage projects to provide on-demand power.

Long-Duration Energy Storage Makes Progress but Regulation Lags Technology

If you were building an electrical grid from scratch (with no regard to regulations or finance), then long-duration energy storage would be a requisite. It just makes sense — store energy when it’s cheap and/or abundant, and discharge when the price is high, or the energy is needed by the grid. Use it to load-shift, peak-shift and smooth; to replace fossil-fuel-fired peaker plants; and to integrate intermittent renewable resources onto the grid.

Long-duration storage fits in with what utilities, independent system operators, and regional transmission operators understand. “Most utilities seem to want much longer-duration storage systems, with 6 to 12 hours discharge, to do serious load-shaping over the day,” suggests an analyst at a U.S. energy think tank. Some of these expectations are being driven by the performance of pumped hydro, once the only source of grid-connected storage.

Economically viable long-duration energy storage could accelerate solar and wind penetration, grid resiliency, and serve to stabilize volatile energy prices. But, long-duration energy storage will not become pervasive until regulators adapt to the capabilities of the technology.