If Congress does not renew the incentive before it adjourns in December, MAKE expects a downturn in the US wind market in 2017. Should lawmakers approve a multi-year phase-out of the PTC, this would underpin 13GW of “upside” in new capacity from 2015 to 2020, MAKE says.

There is a possibility that lawmakers could renew the PTC for either one year or two years without a step-down.

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