The Energy Department said it had awarded contracts to loan 45.2 million barrels of crude oil from the Strategic Petroleum Reserve as of Friday.

Companies that have been awarded the contracts include BP Products North America, Gunvor USA, Marathon Petroleum and Shell Trading, the Energy Department said in a statement.

The Trump administration is loaning oil from the strategic reserve as part of a wider agreement by countries in the International Energy Agency to release 400 million barrels of crude from reserves to tame prices that have risen during the conflict with Iran.

The U.S. is releasing oil in the form of loans that companies will return with extra barrels as a premium, a system the Energy Department said was meant to stabilize markets "at no cost to American taxpayers."

The contracts for 45.2 million barrels of oil are from a batch of 86 million barrels of crude oil the Energy Department sought bids for last week. Other companies that have been awarded contracts as of Friday are Energy Transfer Crude Marketing, Mercuria Energy America, Trafigura Trading and Vitol.

The U.S. aims to eventually exchange a total of 172 million barrels from the reserve, and expects oil companies to return about 200 million barrels, including the premium.