Energy

Three nonprofits hope to force the federal government to regulate hydrogen fluoride more strictly. The chemical is still used at a Delaware County refinery.

Trump traveled to Pittsburgh at a summit helmed by Republican Sen. David McCormick that included dozens of top executives.

PGW sought emails, texts and memos from climate groups that are participating in its ratemaking case. The PUC ruled that would violate the First Amendment.

The multimillion-dollar experiment that was years in the making comes as the federal government makes broad cuts to science elsewhere.

In 2020, Josh Shapiro, then Pa.'s AG, released a landmark report with recommendations on regulating fracking. Advocates say he has done little to advance them.

Our region is under an “extreme heat warning” with temperatures in Philly expected to reach 100 degrees for the first time in over a decade. Why do cities feel even hotter?

PECO is working to fix outages from last week’s storm. But thousands of customers are without power for A/C as temperatures soar.

Residents are calling for tougher environmental laws, and want regulators to evaluate what could have been done differently.

Delaware’s first of six community solar farms has launched in Sussex County, supporting low-income households and the state’s 2050 net-zero goal.

While Atlantic Shores took the step to cancel its contract with New Jersey, the company says its project is in a holding pattern while awaiting a new political climate.

The refinery reported emissions of the toxic gas sulfur dioxide at rates as high as 1,450 per hour over the past couple weeks. Officials say air quality remains good.

Thursday is forecast to be Philly’s first day of the season that tops 90 degrees. It comes with a Code Orange air quality alert.

Pennsylvania Republican lawmakers say it will boost the state’s economy. Environmental groups say it will worsen climate change and harm public health.

Sussex County Council denied a permit for a substation to US Wind for a renewable energy project last year.

Philadelphia Gas Works says it is seeking facts in the rate hike case. Climate advocates say the utility is trampling on First Amendment rights.