Key facts
- U.K. spends up to £50 million daily to balance its power grid.
- £505 million was spent on grid balancing in September.
- Annual balancing costs are projected to reach £3.2 billion over the next year.
- 9 GW of renewable capacity was paid not to produce power on October 14.
- Demand for new grid connections increased from 41 GW to 125 GW between November 2024 and June 2025.
The United Kingdom's efforts to expand renewable energy capacity are being hampered by its outdated transmission infrastructure, leading to significant costs for grid balancing. On October 14, the grid operator spent £47.9 million to shut down wind farms in areas with excess electricity while simultaneously powering gas plants in regions with low supply. This balancing act, which cost £505 million in September alone, is projected to reach £3.2 billion annually. The accelerated deployment of renewable projects is outpacing grid upgrades, leaving many green energy projects waiting for connection and forcing continued reliance on natural gas.