From oil to greener energy sources, Donald Trump is unimpressed with the depth and breadth of the energy world, taking issue with both Opec and COP 21, the climate change agreement struck in Paris last year.
Trump's advisors have suggested that he examine the Organisation of the Petroleum Exporting Countries' (Opec) role in the oil price slump since mid-2014.
Oil prices fell from over $110 per barrel to below $28 in January. This was exacerbated by Opec's refusal to cut output to price out the emerging US shale gas industry.
The Republican presidential nominee has also said he would pull the US out of the UN global climate accord, COP 21, signed by 196 different parties.
Speaking at a conference in Bismarck, the capital of oil-rich North Dakota, he said: "Any regulation that's outdated, unnecessary, bad for workers or contrary to the national interest will be scrapped and scrapped completely."
"We're going to do all this while taking proper regard for rational environmental concerns," he added.
But Trump is a fan of Canadian pipeline company TransCanada's Keystone XL oil pipeline which would've run into the US had president Barack Obama not blocked it due to environment concerns.
"I want it built, but I want a piece of the profits," Trump said. "That's how we're going to make our country rich again."