Washington Administrative Code 480-90-238

Stipulates that when the PUC applies a Lowest Reasonable Cost test, it must consider, among other things, “the cost of risks associated with environmental effects including emissions of carbon dioxide.”

Minnesota Order on Cost of Carbon in Resource Planning

The Minnesota PUC published a 2018 Order establishing a range of $9.05 to $43.06 per short ton of CO2 e, which will be used by 2020 in evaluating and selecting resource options in all commission proceedings.

Colorado Order on Using Carbon Costs in Resource Plans

In 2017, the Colorado Public Utility Commission (PUC) ordered Xcel to use the social cost of carbon Energy Resource Plan (ERP) that would guide utility investments through 2024.

California Proposed Decision on Carbon Costs in Integrated Resource Planning

The Commission has put forward a proposed decision requiring utilities to use the IWG’s Social Cost of Carbon estimates for a Societal Cost Test in Integrated Resource Planning.

New Jersey’s A-3723 and Implementing Order

State legislation and responsive PUC Order requires each utility to implement energy efficiency measures to reduce electricity usage by 2.15 percent and natural gas usage by 1.1 percent annually.

New York’s 2019 Climate Mobilization Act

Established a 2030 goal to increase energy efficiency from 2012 levels by 23%. The Act also incorporated the governor’s previous target of 185 trillion Btus of end-use energy savings below the 2025 energy-use forecast.

Massachusetts’ Energy Efficiency Resource Standard

Requires that electric and gas utilities procure all cost-effective energy efficiency, which requirements the state’s PUC administers on a three-year planning cycle.