California Electric Grid Breaks Another Record as California ISO Hits All-Time Peak of More Than 97% Renewables

Originally published by Sierra Sun Times & California ISO.

In another sign of progress toward a carbon-free power grid, the California Independent System Operator (ISO) set a new record on April 3, when 97.6 percent of electricity on the grid came from clean, renewable energy.

The peak, which occurred briefly at 3:39 p.m., broke the previous record of 96.4 percent set on March 27, 2022. Before that, the grid’s record for clean power was 94.5 percent, set on April 21, 2021. The new milestone comes as the ISO integrates growing amounts of renewable energy onto the grid in support of the state’s clean energy goals.

“This new record is testament to the hard work and collaboration of many people, from policymakers to system operators,” said ISO President and CEO Elliot Mainzer. “While these all-time highs are for a brief time, they solidly demonstrate the advances being made to reliably achieve California’s clean energy goals.”


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