New data by Lazard, a financial advisory firm, shows that prices for renewable electricity declined again this year, continuing their downward trend. But the data, released last month, miss another critical clean energy resource. Energy efficiency–the kilowatt-hours we avoid by eliminating waste–remains, on average, our nation’s least-cost resource.

Efficiency also delivers a host of other benefits. It improves electric grid reliability and resilience, can target savings where and when needed the most, creates jobs, spurs other economic development, reduces customer utility bills, makes homes and buildings more comfortable, and reduces harmful pollution.

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