PacifiCorp is preparing to bring online enough long-term clean energy resources to help the utility meet Washington's strict greenhouse gas targets by 2030.

Puget Sound Energy and Avista told the Washington Utilities and Transportation Commission they have taken steps to build clean energy resources quickly to qualify for expiring federal tax credits, while voicing concern that limited transmission capacity and the state’s greenhouse gas targets pose challenges.

Two Washington agencies said they reached a “major milestone” in nailing down new rules to implement the state’s 2019 Clean Energy Transformation Act.