In August 2024, Great Britain's electricity system achieved a significant milestone:
- Fossil fuel generation hit a century-low of 3.6 TWh, with an average CO2 emission of 84 grams per kWh.
- For the first time, fossil fuels (98.5% gas, 1.5% coal) fell to third place in the monthly electricity mix.
- Wind power generated 33% of August's electrical demand, up from 25% in August 2023.
- Britain was a net importer of 1.9 TWh of electricity, compared to being a net exporter in August 2022.
- CO2 emissions from the power sector in 2024 are on track to be 40-50% lower than in 2019.
- Electricity demand is expected to rise due to increasing adoption of electric vehicles and heat pumps.
- The last coal-fired power station in the UK is set to close by the end of September 2024.
These developments indicate a rapid transition towards a low-carbon electricity system in Britain, with renewable energy sources playing an increasingly important role. The changes present both opportunities and challenges for energy system planners in ensuring stability and security of supply.