Solar Energy

A Year After Trump’s Paris Pullout, U.S. Companies Are Driving a Renewables Boom

Dozens of Fortune 500 companies are voluntarily investing billions in wind and solar energy.

By BRAD PLUMER

Shell Spreads Its Bets Around as It Prepares for a Greener Future

Royal Dutch Shell’s acquisition of a small British energy firm shows how the world’s oil giants are navigating a shift away from their core products.

By STANLEY REED

California Will Require Solar Power for New Homes

The state mandate, to take effect in 2020, is the first in the country and is expected to add $8,000 to $12,000 to the cost of a house.

By IVAN PENN

Trump’s Solar Tariffs Cause a Scramble in the Industry

Some companies are moving manufacturing to the United States, even as petitions for exemptions continue. But the rate of installations has slowed.

By IVAN PENN

How the U.S.-China Trade Conflict Has Evolved

The United States wants American companies to have a level playing field with their Chinese counterparts. China wants to build its industries into sophisticated global competitors. Both countries have demonstrated a willingness to offer concessions — and escalate tensions — to get what they want.

By KEITH COLLINS

Solar Power Is Burning Bright. But It’s Hardly Twilight for Fossil Fuels.

The world added more solar power than any other energy source in 2017. But it's still a tiny fraction of total electricity.

By SOMINI SENGUPTA

It’s the No. 1 Power Source, but Natural Gas Faces Headwinds

Gas was seen as a bridge from coal to an alternative-energy future. Regulatory moves to speed that transition have unsettled the utility industry.

By IVAN PENN

The Luxury of Sustainability

As Graham Hill, of TreeHugger and LifeEdited, discovered when he built a home in Hawaii, a green house can be more luxurious than a conventional one.

A Gun-Owning Trump Fan’s New Crusade: Clean Energy

Debbie Dooley, an early Tea Party organizer who backs President Trump, says embracing alternative energy is part of a consistent worldview.

By IVAN PENN