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NREL analysis finds tax credit extensions can impact renewable energy deployment and electric sector

March 01, 2016

The Energy Department's National Renewable Energy Laboratory (NREL) today released new analysis exploring the potential impact of recently extended federal tax credits on the deployment of renewable generation technologies and related U.S. electric sector carbon dioxide (CO2) emissions.

The report, Impacts of Federal Tax Credit Extensions on Renewable Deployment and Power Sector Emissions, details the use of state-of-the-art scenario modeling to explore two questions:

(1) How might renewable energy deployment in the contiguous United States change with these recent federal tax credit extensions?

(2) How might this change in renewable energy deployment impact CO2 emissions in the power sector?

Federal tax credits for renewable energy, particularly the wind production tax credit (PTC) and the solar investment tax credit (ITC), have offered financial incentives for renewable energy deployment over the last two decades in the United States. In December 2015, the wind and solar tax credits were extended by five years from their prior scheduled expiration dates, but ramp down in tax credit value during the latter years of the five-year period.

The report examines the impacts of the tax credit extensions under two distinct natural gas price futures, as the price of natural gas has been a key factor influencing the economic competitiveness of new renewable energy development. The analysis finds that, in both natural gas price cases, tax credit extensions can spur renewable capacity investments at least through the early 2020s, and can help lower CO2 emissions from the U.S. electricity system.

The tax credit extensions are estimated to drive a net peak increase of 48-53 gigawatts in installed renewable generation capacity in the early 2020s. Longer-term impacts are less certain and can depend on natural gas prices. After the tax credits ramp down, greater renewable energy capacity is driven by a combination of assumed cost reductions in renewable generation, assumed rising fossil fuel prices, and existing clean energy policies. The tax credit extension-driven acceleration in renewable energy capacity development can reduce fossil fuel-based generation and lower electric sector CO2 emissions. Cumulative emissions reductions over a 15-year period (spanning 2016-2030) as a result of the tax credit extensions are estimated to range from 540 to 1,400 million metric tons CO2.
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NREL is the U.S. Department of Energy's primary national laboratory for renewable energy and energy efficiency research and development. NREL is operated for the Energy Department by The Alliance for Sustainable Energy, LLC.

Visit NREL online at http://www.nrel.gov

DOE/National Renewable Energy Laboratory

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