Why Britain Is Paying Millions To Waste Green Energy

On blustery days, the vision laid out by Ed Miliband for a net zero future suggests that turbines across Scotland should be hard at work, delivering abundant clean power to the British grid. Yet the reality has proved more complicated: Britain’s electricity infrastructure is now so constrained that even as turbines generate record volumes of green energy, large quantities of it are simply thrown away. Grid operators, unable to cope with the excess, are paying wind farms millions in compensation for energy that never reaches homes or businesses.

This predicament, called “curtailment” within the energy industry, has gathered little public attention over the years. However, its impact on the national economy is now undeniable. Data from the tracker Wasted Wind reveals that Britain has already spent over £860 million on wasted wind generation in 2025 alone, a sum passed directly to consumers via increased bills. Ofgem attributed £15 out of the planned £35 October rise in the energy price cap to grid balancing costs, much of which stems from these curtailment payments.

For Miliband and Labour’s government, the stakes are high. They have pledged to reduce household energy bills by £300 by 2030, yet the drive to deploy more wind and solar capacity will, paradoxically, exacerbate the problem before providing the promised relief. The National Energy System Operator warns that constraint costs could balloon to £8 billion a year by 2030 if grid upgrades proceed at their current pace. Even with ambitious investment plans, these wasteful costs are forecast to persist at around £3 billion annually long term.

The core issue lies with Britain’s outdated north-to-south transmission system. Most wind farms are clustered in northern regions, particularly Scotland, while the greatest demand is found in the southern cities. Often, the power lines simply cannot handle the volume of electricity, forcing operators to pay wind farms for not generating—so-called “phantom” generation—while simultaneously paying gas-fired plants in the south to fill the resulting shortfall. On a single day, 31 August, over £12 million was spent on this juggling act, with £4 million going to halt turbines and £8 million paid to ramp up gas generation.

A closer look at the beneficiaries shows that large industry players, such as the consortium behind Moray East offshore wind farm and firms including SSE, EDF, Scottish Power and Greencoat UK Wind, are receiving tens of millions annually in curtailment payments. Critics note that some companies profit from both ends, owning wind farms paid to switch off and gas plants paid to replace that lost power. Meanwhile, advocates of electricity market reform argue that regional pricing zones could better reflect local supply and demand, providing an incentive to curtail generation only when excess truly exists.

Grid companies acknowledge the problem but maintain that only massive investment in network upgrades will enable Britain to fully capitalise on its renewable energy. The government is preparing the largest overhaul of the power network in decades, with billions earmarked for new infrastructure, yet delivery timelines remain uncertain. Until capacity catches up with ambition, British billpayers will continue footing the bill for wasted green energy, a contradiction at the very heart of the net zero transition. Unless tackled head-on, the dream of cheap, clean, secure power risks fading into a nightmare of spiralling costs and squandered opportunity.