Washington Utilities and Transportation Commission Adopts Updated Social Costs of Greenhouse Gases
Utility resource planning
In September 2019, the UTC adopted social cost of greenhouse gases estimates to comply with Washington State's May 2019 clean energy legislation.
$75/metric ton (2019$) for year 2020 emissions, based on IWG 2016 SCC at 2.5% discount rate
Docket No. U-190730, Order 01
RCW 80.28.405 and RCW 80.28.395
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