Britain’s Renewable Energy Glut

By Felicity Bradstock - Apr 19, 2026, 10:00 AM CDT

• The U.K. is generating record levels of wind and solar power, at times exceeding grid demand and forcing curtailments.

• The government is encouraging households and businesses to use electricity during peak renewable output through discounted or free power schemes.

• Grid constraints and limited storage capacity remain key challenges, even as consumer adoption of solar, EVs, and heat pumps accelerates.

The United Kingdom has been rapidly increasing its deployment of new renewable energy capacity in recent years, to the point that it now has some to spare during peak production hours. While the U.K. gradually increases its battery storage, the government is encouraging consumers to use more electricity during certain times of the day to help shift reliance away from fossil fuels to green alternatives.

Consumers are being asked by the government to use high-consumption appliances, such as dishwashers and washing machines, as well as electric vehicle (EV) chargers, during peak renewable energy production hours this summer, when more solar and wind power is being delivered to the grid. Energy suppliers will support the government's efforts by offering free or discounted electricity during certain hours of the day when there is a surplus of electricity. The scheme is also expected to be extended to businesses and manufacturers.

The scheme expands upon the many initiatives already in place, with energy providers already offering over 2 million households the chance to pay lower electricity rates during off-peak times, to reduce the burden on the grid. However, it is the first time that a scheme will be rolled out to manage the surplus of clean electricity.

The National Energy System Operator (Neso) hopes that the move will encourage consumers to change their energy use to stop the need to turn off wind and solar farms when electricity demand is low, which could be extremely costly. The initiative is expected to be extremely attractive to consumers battling with rising bills, due to the energy price increases driven by the United States-Israeli war on Iran.

The summer season in the U.K. is expected to help the country achieve new clean energy production records, with the potential of powering the grid entirely with net-zero carbon electricity. In the spring, the U.K. set a double solar-power record. Solar farms in England, Wales, and Scotland generated 14.1 GW of low-carbon electricity on 6th April, surpassing the previous high of 14 GW in July last year. That record was quickly broken just one day later when solar power generation rose to 14.4 GW.

The U.K. also achieved record-high wind energy production earlier in the month, resulting in gas-fired power generation falling to a two-year low. The country is also set to import electricity, produced using nuclear power and renewable energy, from continental Europe, thereby further driving down its reliance on fossil fuels.

This is extremely promising at a time when fossil fuel prices are rising ever higher, with greater global volatility, which has led both the International Energy Agency and China to urge governments to diversify their energy mix at an accelerated pace.

However, if too much renewable energy is sent to the grid, it could cause it to become overloaded, increasing the risk of an unexpected blackout, owing to bottlenecks in the country’s transmission network. In the coming years, the U.K. expects to reduce the number of bottlenecks in the system to allow for new renewable energy capacity to be connected to the grid, as well as expand the reach of U.K. transmission to more rural areas, in line with rising electricity demand.

In addition to more renewable energy flowing to the U.K. grid from commercial projects, a record number of homes have also installed domestic renewable energy equipment to combat rising energy bills. Consumer interest in solar panels, EVs, and heat pumps has risen sharply since the U.S.-Israeli war on Iran commenced in February, which has driven up global energy prices, according to data from the country’s leading energy suppliers.

Energy bills are expected to increase by 18 percent from July, as the next energy price cap takes effect. This equates to around £1,929 for the typical annual dual-fuel tariff, driven by higher gas prices.

The biggest GB energy supplier, Octopus Energy, reported that orders for heat pumps have more than doubled in March, compared to February, while sales of solar power systems increased by around 80 percent, and new EV leases went up by over 85 percent. The U.K.’s second biggest supplier, British Gas, also recorded a 250 percent increase in solar panel installation inquiries since 28 February.

“British families are tired of being held hostage by global fossil fuel prices,” the chief product officer at Octopus, Rebecca Dibb-Simkin, explained. “We’re seeing a massive shift as people take matters into their own hands – switching to solar, heat pumps and EVs, locking in low running costs and shielding themselves from future price shocks.”

As the U.K. continues to accelerate the deployment of new renewable energy capacity, it is quickly becoming a green energy generation powerhouse, helping drive down reliance on fossil fuels. While the country invests in improving the grid and adding battery storage, the government is encouraging consumers to change their energy habits to take advantage of peak green energy production in the summer and decrease the U.K.’s dependence on gas.