West

Fossil fuels

Colorado now requires health warning labels on gas stoves

The state is the first to put labels on the appliances pointing consumers to evidence about the harms of cooking with gas. Appliance manufacturers are suing.

By Alison F. Takemura . 19 August 2025
Hydrogen

This hydrogen microgrid is the first of its kind. Is it a good idea?

Energy Vault, Plug Power, and PG&E partnered on a project that replaces diesel generators with fuel cells to provide backup power for a small town in California.

By Julian Spector . 11 August 2025
Carbon-free buildings

San Francisco fast-tracks all-electric standard for major renovations

With the state set to pause code updates in October, the city is racing to close what some saw as a loophole in its existing all-electric building code.

By Alison F. Takemura . 8 August 2025
Utilities

California lawmakers have a radical idea for lowering electricity bills

Two bills would replace $15 billion in utility power-grid investments with cheaper public financing — a new approach to cutting sky-high electricity rates.

By Jeff St. John . 7 August 2025
Carbon-free buildings

California halts building code updates in a blow to electrification

Local jurisdictions may still be able to adopt ambitious codes that help homes ditch gas and promote heat pumps under exceptions in the new law, AB 130.

By Alison F. Takemura . 4 August 2025
Solar

LA has a plan to stop copper thieves: Solar-powered streetlights

As U.S. cities battle thieves who swipe copper wiring from streetlights, solar fixtures are becoming a financial no-brainer despite their higher price tag.

By Ysabelle Kempe . 4 August 2025
Electrification

Court upholds a landmark clean-heat rule in Southern California

The first-in-the-nation regulation, passed last year, will cut NOx emissions from more than 1 million boilers and water heaters in the smoggy Los Angeles area.

By Maria Gallucci . 23 July 2025
Sponsored by DNV

How DNV is helping partners slash energy bills with dual-fuel heat pumps

A DNV study for PSE confirms dual-fuel heat pumps reduce overall energy use and satisfy customers, providing a data-backed blueprint for decarbonizing homes.

22 July 2025
Green steel

America’s biggest solar-powered steel mill has a new owner

Rocky Mountain Steel gets most of its electricity from a 300-MW solar project in Colorado. A private-equity firm is acquiring the steel mill’s owner in a $500M deal.

By Maria Gallucci . 16 July 2025
Energy storage

Redwood Materials built record grid storage project using old EV batteries

The EV battery recycler determined it could make good money by repurposing old battery packs for the grid, and found an eager data center customer.

By Julian Spector . 2 July 2025