Record Year for Wind and Solar Electricity in Great Britain: A Step Towards Clean Power?
In 2025, renewable energy sources in Great Britain achieved a remarkable milestone, generating a record amount of electricity, according to BBC analysis. Wind power emerged as the leading renewable source, but it was solar energy that truly shone, rising by nearly a third compared to 2024 levels. This surge in solar power can be attributed to the UK's record-breaking sunny year and the widespread expansion of solar panels across the country.
However, while renewable energy is making significant strides, the electricity grid still heavily relies on fossil fuel gas. This highlights the ongoing challenge of reaching the government's ambitious "clean power" target by 2030. Despite this, the growth of renewables has been one of the most promising areas in the global fight against climate change.
The trend has been consistent in Great Britain over the past decade, with the government aiming to accelerate the transition to renewables to meet its clean power goal and reduce carbon emissions. In 2025, wind, solar, hydro, and biomass collectively generated over 127 terawatt hours (TWh) of electricity, surpassing the previous high of 119TWh in 2024.
Wind power contributed more than 85TWh, accounting for nearly 30% of Great Britain's electricity, while solar panels generated over 18TWh, or more than 6%. This represents a significant increase in solar power generation, with solar panels producing more than 40% of electricity during peak periods in July, a remarkable improvement from just 5% in 2013.
The expansion of solar farms and rooftop installations, including the largest solar farm at Cleve Hill near Faversham, Kent, has played a crucial role in this growth. Additionally, the UK's sunniest year on record in 2025 provided ideal conditions for solar panels to excel during the spring and summer months.
Despite these advancements, the British electricity grid still heavily depends on fossil fuel gas. In 2025, gas generation increased to over 77TWh, contributing approximately 27% of the total electricity. This rise in gas generation could be attributed to various factors, including reduced imports from Europe, lower nuclear generation, the closure of the last coal power station, and higher electricity demand.
As a result, Britain's electricity became slightly more polluting in 2025 compared to 2024, with each kilowatt-hour generating 126g of carbon dioxide on average. However, this is still a significant improvement from 2012, when the average was 505g/kWh.
The government's "clean power" target aims for 95% of electricity to come from renewables and nuclear energy by 2030. While 2024 saw clean sources producing almost three-quarters of total electricity generation, the mix still includes gas generation not covered by the government's definition. The 2025 figures will be released later, but the current gas reliance indicates that there is much work to be done.
Experts suggest that technologies like batteries and other low-carbon sources, such as nuclear power, can help address the challenge of intermittent renewable energy. Upgrading the electricity grid is also essential to accommodate new renewables and ensure their efficient distribution. However, these upgrades come with short-term costs, which may temporarily offset the savings from renewable energy.
Despite the challenges, the government's commitment to clean energy is evident, with Energy Secretary Ed Miliband emphasizing the importance of homegrown clean power. However, the opposition has raised concerns, with Shadow Energy Secretary Claire Coutinho calling for the government to reconsider its clean power target, citing potential increases in energy bills.
The debate continues as the UK strives to balance the benefits of renewable energy with the practicalities of achieving its ambitious clean power goals.
