The Powering Past Coal Alliance (PPCA) is a group of 182 countries, cities, regions and organisations aiming to accelerate the coal phase-out of coal-fired power stations, except the very few which have carbon capture and storage. It has been described as a "non-proliferation treaty" for fossil fuels. The project was undertaken with financial support from the Government of Canada, through their environmental department known as Environment and Climate Change Canada.

Coal phase-out is an environmental policy intended to stop burning coal in coal-fired power plants and elsewhere, and is part of fossil fuel phase-out. Coal is the most carbon-intensive fossil fuel, therefore phasing it out is critical to limiting climate change as laid out in the Paris Climate Agreement. The International Energy Agency (IEA) estimates that coal is responsible for over 30% of the global average temperature increase above pre-industrial levels. Some countries in the Powering Past Coal Alliance have already stopped.