Numbers From the War on State Renewables Standards

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At least twenty-two of the 29 state renewables standards have been attacked by legislators or regulators in the last year or are now under attack.

Known as a Renewable Portfolio Standard (RPS) or a Renewable Energy Standard (RES), these mandates require utilities to obtain a portion of their power from renewable sources by a certain date. Research shows they add less than 5 percent, on average, to the cost of electricity bills and are an effective driver of renewables growth.