In a report on energy efficiency trends, British energy company BP said onshore wind could become the most economical source of electricity within 30 years. A technology outlook for 2018 by the British supermajor finds coal is currently the largest source of global energy generation. There’s enough on hand, the report read, to keep the grid satiated for more than a century based on current demand. “However, coal has the highest carbon content of any form of primary energy,” the report read. “Its share of energy is starting to fall, partly as a result of policies and preferences for lower-carbon fuels.” For renewables, meanwhile, the cost of generating electricity from onshore wind power has dropped off 23 […]