Joe Biden is inheriting an energy landscape that has continued to decarbonise thanks to the actions of companies and individual states.
Cheap renewable energy and difficulties financing coal are forcing change in South Africa, but there are concerns vested interests could push gas over solar and wind.
G20 leaders need to ditch voluntary commitments and set clear, measurable targets for clean energy access when they meet later this month.
A Biden victory would be a relief for climate campaigners worldwide. But would it be a game changer for global efforts?