FERC approved tariff revisions by Berkshire Hathaway Energy subsidiaries PacifiCorp, Nevada Power and Sierra Pacific Power that will enable the utilities to earn market-based rates when participating in the WRAP.

FERC granted Nevada Power an exemption simplifying the NV Energy subsidiary’s filing of its triennial updated market power analysis.

Imports from the Southwest and Rockies helped the Northwest survive January’s cold, showing the region’s reliability is at a “tipping point,” WPP said.