AS the United Nations' climate change website puts it succinctly, energy is at the heart of the climate challenge – and key to the solution.
In 2023, the power sector was the largest source of global greenhouse gas emissions. Polluting fossil fuels that emit planet warming carbon dioxide still account for nearly 60% of electricity generation, but cleaner sources of energy are gaining ground.
Between 2015 and 2024, annual electricity capacity of renewables increased by around 2,600 gigawatts – a 140% increase.
Here are further encouraging facts and figures about green energy.

