A new analysis from global energy think tank Ember has found that the gas share in the global electricity mix has fallen for the fifth consecutive year, with nearly half of the world’s gas-generating economies already passing peak gas power generation.
Ember’s analysis found the gas share in the global electricity mix has declined from 23.9 per cent in 2020 to 21.8 per cent in 2025. And while gas generation in fact rose slightly in absolute terms, its growth has slowed with the increase in solar and wind capacity increasingly meeting rising electricity demand.
In 2025 alone, solar generation grew by 636 TWh, 17 times more than gas generation, which only increased by 38 TWh. This meant that solar alone accounted for around 75 per cent of new global electricity demand growth in 2025, while gas contributed only around 5 per cent.
In terms of the long-term decline of gas in the electricity mix, gas growth during 2021-2025 was around half the rate seen during the preceding five years (2016-2020) – an average annual rate of 1.6 per cent compared to 2.9 per cent.
Looked at another way, gas accounted for an average 33 per cent of growth in global electricity demand between 2001 and 2005, remaining high for the next 15 years, accounting for an average 31 per cent of growth in new electricity demand between 2016 and 2020.
