Climate crisis

Western wildfires suppressed solar output in 2020

Wildfires exacerbated by climate change darkened the skies above solar projects across the U.S. West last year.

Electric vehicles

Tackling the electric vehicle buyer gap

Electric car sales skew toward the wealthy. Can stronger incentives and better program design change that?

Heat pumps

ESB and GreenCom's heat pump pilot shows promise for balancing the grid

Ireland's government wants to install 600,000 heat pumps by 2030. That could save energy and shift consumption to times of lower grid demand.

Policy & regulation

Arizona passes rule for 100% carbon-free electricity but extends timeline

The state will now aim to reach carbon-free electricity by 2070, not 2050.

Solar

Solar design startup Aurora Solar hits the big time with $250M investment

The funding round pops the startup's valuation to $2 billion, big money in the solar software space.

Clean energy

Arizona may resurrect efforts to commit to 100 percent carbon-free electricity

Arizona's failed clean electricity proposal could live to see another day.

Fossil fuels

Another bad year for coal

U.S. coal shipments hit new lows in 2020, according to new data.

Solar

The political fight over solar tariffs wages on

New administration, same old problems for solar industry players who want to see the Section 201 tariffs dissolved.

Policy & regulation

Arizona rejects plan for 100% carbon-free electricity

Years of negotiation over Arizona's clean energy rules come to naught in the eleventh hour.

Solar

Can a new SunShot push the US toward 100% clean energy?

The Department of Energy has a new solar price goal — but getting to carbon-free electricity will require more sweeping changes in electricity strategy, experts say.