Increased use of renewable diesel and greater availability of hydropower helped California cut its greenhouse gas emissions by 1.7% in 2019.

A new app from the Department of Energy is aimed at cutting the soft costs that now make up about two-thirds of the price of rooftop solar systems.

A California lawmaker has proposed a bill that calls for carbon neutrality in the state’s cement and concrete industry by 2045.

A surge in applications for residential solar systems is straining local building departments, a situation NREL wants to help fix.