A year ago, I introduced the mantle curve to illustrate California's overgeneration of solar power and the resulting need for curtailment. In 2022, California's scoping study set a target for an additional 60 gigawatts (GW) or 60,000 megawatts (MW) of solar generation to be deployed by 2030. Below are the forecast curves from last year's post in May. The system was penetrating the overgeneration region, but the net load was above zero MW. Similar forecast loads from last week are provided below. We see the net load digs below zero MW, into the mantle. Granted, the first chart represents a week in May last year, while the second represents…
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