Coal’s market share in the US power mix is being diminished at an unprecedented rate due to ferce competition from cheap gas and renewables. Around 30 GW of coal capacity has been retired over the last three years, with coal generation declining by 13% over the same period. The economics of US coal power could not be starker: new coal capacity is not remotely competitive, while in the next few years it will be the exception rather than the rule for the operating cost of existing coal to be lower than the levelized cost of new gas and renewables.