Energy

Delmarva Power has filed an application with the state’s Public Service Commission to increase its electric distribution rate by $72.3 million.

For the first time ever in a laboratory, researchers were able to generate more energy from fusion reactions than they used to start the process.

“We got played,” said Ray Kemble, the most outspoken of a small group of Dimock residents who have battled the drilling company and state regulators alike.

Vanguard withdrew from a global network of asset managers committed to cutting carbon emissions. The company says it was to preserve independence and prevent confusion.

In another sign of transformation at the 1,000-acre site, the last hazardous waste storage areas are expected to formally close within a year.

Exhaust from diesel trucks can worsen heart and lung issues, and even cause cancer. A new Pa. grant program will help replace them with electric vehicles.

Russian authorities rejected a price cap on the country's oil set by Ukraine’s Western supporters and threatened Saturday to stop supplying the nations that endorsed it.

Cabot Oil and Gas admits responsibility for contaminating drinking water wells.

The new rules will cut pollution coming from the state’s six trash incinerators — including the ones in Bucks, Delaware, and Montgomery counties.

The company redeveloping the former refinery plans to use a third-party facilitator to negotiate an agreement with community stakeholders.

A look at the negotiations and possible global action coming out of the UN climate summit and a leading climatologist on tackling climate change with optimism and agency.

Environmental groups spend big in Pennsylvania’s midterm elections citing “existential crises” over climate and environmental protection.

Despite the size of the package, lawmakers introduced and passed the bill in just a few hours with no public hearings.

Opponents of the bioenergy facility planned in Seaford say it will worsen water quality and environmental injustice.

Residents want the tank farm associated with the former PES refinery permanently shut down, but the new owner has left the door open to restarting it.