worldwide demand
The demand for energy has spiked around the world. When supply is low, prices go high.
Look at developments in Brazil, China, and India to see where energy use is climbing. Those areas, while they have spiked in use, they are still using only 1 to 3 barrels of oil equivalent per person. Here in the US we use 25 barrels per person per day. There isn't enough energy in the world to provide oil equivalents at 25 bbl/person for everyone. The more WE use, the more the price goes up for everyone.
Thank God that winter has been mild because US companies that typically suppliment natural gas with LPG bought overseas and delivered by tankers to special LPG ports have been outbid on contracts and many of those ports are underutilized right now. That LPG has gone to Europe, perhaps to make up for the gas not leaving Russia that ususally goes to Europe since the folks in Russia are freezing to death in the dark in worst winter since WWII. Or to Asia, where business is booming making cheap shoes and computers for us.
Our country has "protected" huge portions of the oil and gas bearing properties that might be drilled for production, so the production companies have gone overseas (where most of those profits actually were produced). Foreign countries encourage investment, then retroactively change the tax rates or just nationalize and steal all the equipment that was brought in.
Prices look to be moderating now, as the economy in China slows a bit. They had been running factories and hospitals on diesel generators when they could not keep up with domestic energy needs a few months back. But, beware, hurricane season is not that far away, and the Mid East could blow up at any time. Concerns over supplies is what drives the traders in New York who set the market prices, so weather and politics is what is in control of prices you and I pay.