How Wind and Solar Saved the UK £1.7 Billion in Gas Imports Since the Iran War: 10 Key Facts
Since the outbreak of the Iran war in late February 2026, the United Kingdom has witnessed an unprecedented surge in renewable energy generation. Wind and solar power have not only kept the lights on but also saved the nation a staggering £1.7 billion in avoided gas imports. According to a detailed analysis by Carbon Brief, the UK’s electricity system has undergone a remarkable transformation, with renewables outpacing fossil fuels for months on end. Here are the ten most important facts about how wind and solar have reshaped Britain’s energy landscape during this geopolitical crisis.
1. £1.7 Billion Saved in Gas Imports
Between the start of the Iran war in February 2026 and the end of April, the UK avoided importing gas worth £1.7 billion. This saving came directly from the record-breaking output of wind and solar farms across Great Britain. The avoided imports represent roughly 41 terawatt-hours (TWh) of gas, which would have required 34 tankers of liquefied natural gas (LNG). At the elevated global prices triggered by the conflict, each tanker cost around £50 million. This financial buffer has helped shield households and businesses from even higher energy bills during a period of international tension.
2. Record Wind and Solar Generation Since War Began
Since February 26, 2026, wind and solar have generated a record 21 TWh of electricity on the island of Great Britain. This figure is the highest ever for any comparable period, surpassing previous records by a significant margin. The surge was driven by both favourable weather conditions and a rapid expansion of renewable capacity in recent years. As a result, the UK has been able to reduce its reliance on gas imports precisely when global supplies were most volatile, demonstrating the strategic value of homegrown clean energy.
3. Gas Generation Dropped by Nearly a Third
Thanks to the influx of wind and solar power, electricity generation from gas fell by almost one-third compared to the same period in 2025. March and April 2026 saw the lowest monthly gas generation ever recorded in Great Britain. This drop is particularly striking because gas had been the backbone of the UK’s electricity mix for decades. The decline underscores how rapidly renewables can displace fossil fuels when they are prioritised and scaled up, even during a period of increased demand uncertainty.
4. Avoided Imports Equal 34 LNG Tankers
The 41 TWh of gas that the UK did not need to import is equivalent to about 34 shipments of liquefied natural gas. Each tanker would have carried enough gas to heat hundreds of thousands of homes for a month. The avoidance of these imports not only saved money but also reduced the UK’s exposure to volatile international gas markets. At a time when LNG prices were spiking due to war-related disruptions, this was a critical advantage that helped stabilise domestic energy costs.
5. Renewables Generated More Than Double the Electricity of Fossil Fuels
Since the conflict began, wind and solar combined have produced more than twice as much electricity as all fossil fuels (mainly gas and a small amount of coal). This is a historic milestone for the UK, which only a decade ago relied on fossil fuels for over four times the electricity that renewables provided. The reversal highlights the speed of the energy transition in Britain. In many hours of the day, renewables now dominate the grid, pushing fossil plants into reserve or early retirement.
6. The Electricity Mix Has Completely Flipped
A decade ago, fossil fuels generated more than four times the electricity of wind and solar. Today, wind and solar generate more than double that of fossil fuels. This dramatic flip in the generation mix reflects years of investment in offshore wind, onshore turbines, and solar panels. The Iran war accelerated this shift by making gas expensive and less competitive. As a result, the UK’s grid is now cleaner and more resilient than at any point in its history.
7. Fifteen Months Straight of Renewables Beating Fossil Fuels
Wind and solar have now generated more electricity than fossil fuels for a record 15 consecutive months. This streak includes the entire winter of 2025–2026 for the first time. Winters are typically when gas demand peaks due to heating and lower solar output, but this time renewables held their own. The achievement proves that renewable energy is no longer a fair-weather contributor but a reliable, year-round workhorse that can meet a large share of the country’s electricity needs even during the coldest months.
8. Gas Set Electricity Prices 25% Less Often
In March and April 2026, gas was the marginal price setter only about 75% of the time, compared to nearly 100% in the same months of 2022, when Russia’s invasion of Ukraine sent fossil-fuel prices soaring. This 25% reduction means that consumers were exposed to less price volatility from gas markets. Because wind and solar have zero fuel costs, their increasing share pushes down wholesale electricity prices. The effect was particularly pronounced during sunny or windy days, when cheap renewable generation dominated the market.
9. Multiple Records Broken in April 2026
April 2026 was a month of superlatives for the British electricity system. Beyond the lowest-ever gas generation, the grid hit a new high for zero-carbon electricity share. For half an hour on April 22, between 3:30 and 4:00 PM, a stunning 98.8% of the power feeding into Great Britain’s main transmission grid came from zero-carbon sources – including wind, solar, nuclear, and hydro. This milestone demonstrates that running the grid on nearly 100% clean energy is technically feasible, even before widespread battery storage is deployed.
10. The Strategic Case for Renewables Is Now Clear
The events since the Iran war have made an unassailable case for accelerating the renewable energy transition. Wind and solar have not only saved £1.7 billion but also enhanced energy security at a time of international crisis. By reducing dependence on imported gas, the UK has insulated itself from price shocks and geopolitical blackmail. Carbon Brief’s analysis shows that every additional gigawatt of wind or solar capacity directly cuts the country’s vulnerability. The lesson is clear: investment in renewables is investment in resilience, economic stability, and climate action all at once.
In summary, the Iran war has inadvertently highlighted the immense benefits of the UK’s clean energy boom. Wind and solar have proven their worth as both a financial safeguard and a strategic asset. While the conflict continues, Britain’s renewable generators are working harder than ever to keep energy affordable and the air clean. The path forward is unmistakable – doubling down on renewables is the most sensible response to today’s volatile world.