How much storage does a grid need? Too little leads to blackouts. Too much means money wasted. Getting the predictions wrong will skew policy priorities and investments, and slow the transition to a clean electric grid. Effective Load Carrying Capability (ELCC) measures a resource’s ability to produce energy when the grid is most likely to experience electricity shortfalls. Mark Specht at the Union of Concerned Scientists explains how it works. … [Read more...]

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