Jennifer Granholm used her first speech as U.S. energy secretary to warn oil and gas companies they risk being left behind unless they embrace a transition to cleaner sources of energy, while offering them an opportunity to partner with the new adminis…

Representatives of electric-truck maker Workhorse Group Inc. are scheduled to meet with officials at the U.S. Postal Service March 3 as the company explores options for challenging the loss of a massive contract to build the next generation of postal t…

House Democrats on June 30 will issue an ambitious plan to combat climate change, a move intended to reassure their base of supporters but that’s sure to inflame opponents on the right.