Trump says the U.S. will obtain diesel from Russia, relaxing years of U.S. pressure on Moscow, to combat prices before midterms. He said he struck the deal with Russian President Vladimir Putin in a phone call.

Diesel costs are high and Oklahoma officials are trying to cushion the price punch through softening rules around off-road diesel. How soft is this cushion?

Scale Datacenter, which launched two years ago, is reusing buildings for its operations on the former Chesapeake Energy campus in Oklahoma City.

President Trump has signed an executive order that would allow anyone to purchase a tax-free type of fuel known as red-dyed diesel. This could save truckers money, but it's not always an option.

The Cowboy State runs on diesel, and is facing some of the highest prices in America for it.

Nearly a dozen state lawmakers heard from operators, developers, environmental agencies, local elected officials and concerned Oklahomans Tuesday as they weigh the best way to regulate the rapidly changing data center industry.

An Oklahoma district judge found that a natural gas marketing company illegally hiked prices during Winter Storm Uri in 2021.

Whether it's oil from Venezuela or somewhere else, the U.S. Strategic Petroleum Reserve needs to be refilled. The SPR is widely considered critical for energy security. We run through the challenges to refilling the reserves.

A Houthi advance along Yemen's Red Sea coast could help push gas prices up even more as the Iran-backed group also launches attacks on Saudi Arabia's oil facilities.

The price of diesel has reached an all-time high, a result of the war in Iran and Ukraine's attacks on Russian refineries. That will matter across the supply chain.

Soaring bills during summer heat and a pending rate case fueled a petition circulating online.