The rules were being rewritten to make “vehicles more affordable and easier to manufacture in the United States,” Duffy said.

The world of long-haul trucking is not known for fuel efficiency. These are huge trucks that pull huge loads, so even the ...

Recent policy shifts at the federal level have introduced significant variability to the US renewable energy sector. While demand for clean ...

Automakers could soon catch a break. Discover how a new Senate proposal aims to eliminate costly fuel economy fines, ...

New fuel-economy rules could cripple a longstanding Tesla revenue source. Plus: BYD is squeezing out its competition, and ...

Musk turned on Trump only after losing green subsidies from House GOP.

The reality TV contestant heading up the Dept. of Transportation finalized his rule to make your cars less efficient, thus raising fuel costs.

We are kicking off Daily on Energy with news coming from the Transportation Department, which finalized a rule that declared ...

The Transportation Department said former President Joe Biden's CAFE standards exceeded the government's legal authority by including electric vehicles.

Transportation Secretary Sean Duffy says Biden-era fuel economy standards for gas-guzzling cars and trucks are illegal and ...

The Transportation Department paved the way for looser U.S fuel economy standards on Friday by declaring that former ...

Transportation Secretary Sean Duffy ordered the department to revise the Corporate Average Fuel Economy (CAFE) standard when ...