Britain's Net Zero Dilemma: The Dirty Secret Risking Billions

Strategic Insights -

As the UK government works to deliver its ambitious net zero vision, a hidden problem is costing the country billions of pounds every year. Despite wind turbines spinning furiously in Scotland, the grid infrastructure is struggling to manage the power generated, leading to massive amounts of electricity being thrown away while paying wind farm owners millions of pounds for "phantom" generation. This practice, known as curtailment, has become a dirty secret in the UK's clean energy efforts.

Key Takeaways:

  • The UK's grid infrastructure is struggling to manage the power generated by wind turbines, resulting in massive amounts of electricity being thrown away.
  • The practice of curtailment has cost Britain over £860m in 2025 alone, according to the tracker website Wasted Wind.
  • Grid operators pay wind farm owners millions of pounds to switch off their turbines, while also paying gas-fired power plants in the south to provide replacement power.
  • The wholesale price for the market is set by the last, most expensive form of power that is purchased, which often results in wind farm owners bidding in at very low prices to secure their place ahead of more expensive forms of generation.
  • The National Energy System Operator (Neso) forecasts that constraint costs risk surging to around £8bn per year by 2030 as a result of the government's clean power plans.
  • Companies owning both wind farms and gas plants are profiting from both ends, with the Moray East offshore wind farm being paid the most so far this year at £60m.
  • Energy companies including Scottish Power, SSE, and EDF insist that reforms to the national pricing system are needed, but the details of these reforms remain unclear.
  • The UK government is investing £24bn in upgrading the electricity network and building renewable generation by 2028, but experts warn that more needs to be done to tackled the problem of curtailment.

Statistics:

  • £860m: The cost of curtailment in 2025, according to the tracker website Wasted Wind.
  • £8bn: The forecasted constraint costs risk by 2030, according to the National Energy System Operator (Neso).
  • £60m: The amount paid to the Moray East offshore wind farm so far this year.
  • £19m: The amount paid to the Moray West wind farm, the second-biggest recipient of constraint payments.
  • 6%: The proportion of wind farms concentrated in Scotland that are often unable to move their power to where it is most demanded in England's southern cities.

Sources:

  • "The UK's net-zero dilemma: the dirty secret risking billions" by Matt Oliver, Industry Editor, LANDSCAPE
  • Wasted Wind, a tracker website that monitors the cost of curtailment in the UK's energy market
  • The Telegraph, for analysis of market data on wind farm payments
  • Ofgem, the UK energy regulator, for information on grid balancing and constraint costs
  • Neso, the National Energy System Operator, for forecasts on constraint costs by 2030
  • FTI Consulting, for expert analysis on electricity markets and constraint costs
  • Industry news outlets for information on energy companies and their responses to the curtailment problem