Some of the UK’s largest wind farms, the Moray East and West offshore sites, should have been operating at full power when near gale-force winds swept across Scotland on June 3rd.
The wind farms are positioned 13 miles off the northeast coast and can generate enough electricity to power more than a million homes. But instead of doing that, the turbines curtailed, causing them not to operate at full capacity.
Why, you wonder? The UK’s electricity grid couldn’t handle the power.
A Grid Not Fit for Renewables
The national grid was only ever intended for fossil fuel power stations that are situated near urban centers, not remote offshore wind farms.
This outdated infrastructure means there’s often not enough capacity to carry electricity from where it’s generated to where it’s needed. When this occurs, wind farm operators like Ocean Winds are paid to stop generating electricity, this is called a constraint payment.
On that windy June day, Ocean Winds received £72,000 to switch off for 30 minutes. At the same time, a gas plant located in Kent was paid £43,000 to produce more power.
This is a common occurrence; Seagreen, Scotland’s largest wind farm, was paid £65 million last year to restrict output more than 70% of the time. Octopus Energy claims that this method of balancing the grid has already cost the country over £500 million in 2024 alone.
The Cost to Consumers
This inefficiency feeds directly into household energy bills. Despite renewables generating over half of the UK’s electricity, outdated grid systems and daily constraint payments keep prices high.
Gas typically sets the market price as it is typically used to ‘top up’ the system when renewables are curtailed. This means consumers don’t see the benefit of cheaper green energy.
The National Grid System Operator (NESO) warns that unless something changes, grid balancing could cost up to £8 billion a year by 2030.
Zonal Pricing: A Possible Solution?
It was mentioned last week that the government is considering a major U-turn: introducing zonal electricity pricing. The idea is that areas with a surplus of renewable energy, like Scotland and parts of northern England, would pay significantly less for electricity during peak renewable generation periods, maybe even getting power for free on windy days.
However, regions like London or the south-east, which are more reliant on imported power, might pay more.
Those advocating for zonal pricing argue that this would:
- Reduce grid waste
- Attract green industries to lower-cost regions
- Encourage local energy generation
- Ultimately, lower national energy costs
Octopus Energy estimates that this could save the UK £55 billion by 2050, potentially reducing household bills by £50 to £100 a year.
Energy Suppliers Sounding the Alarm
Many energy companies are opposing the move. They claim zonal pricing would introduce uncertainty for investors and make it more difficult to finance large renewable energy projects, especially at a time when interest rates and material costs are already so high.
Others warn that such a complex change could take years to implement, while regional disparities in energy pricing may leave some households paying more.
What Can You Do Now? Apply for Support
While the debate over pricing reform continues, households still face high energy bills today. But there is help available and more people must know how it access it.
Apply for Government Support Schemes
If you’re struggling with bills or looking to improve your home’s energy efficiency, consider applying for:
- ECO4 Scheme: Offer grants for insulation, heating upgrades, and energy efficiency improvements to eligible households.
- Boiler Upgrade Scheme: Financial support to replace old gas boilers with low-carbon heat pumps.
- Great British Insulation Scheme: Targeted at homes in lower council tax bands or on lower incomes, this scheme can cover part or all of the cost of insulation.
- Local Authority Grants: Councils across the UK are offering retrofitting and home upgrade grants as part of their Net Zero commitments.
Start by clicking below and applying with Energy Advice Helpline, We’ve made it easier to apply for these government grants.
Vitalness of the Clean Energy Transition
The UK’s clean energy transition is vital, but it’s also complicated. Until major reforms are made to the grid and energy pricing systems, constraint payments and inefficiencies will continue to keep bills higher than they need to be.
In the meantime, accessing available grants and improving your home’s energy efficiency can help you protect yourself from rising costs and become part of the solution.
