A new report from Clean Energy Think Tank Ember has shown that 2025 has been the strongest year of the UK for generating solar energy.
In the first six months of this year, the generation of solar energy in the UK rose 32%, producing a record-breaking 9.91 TWH. The Solar Energy generation broke consistently records at the beginning of 2025, with generation heights starting five consecutive months that started in March 2025.
This enormous increase in solar generation can be attributed this summer to two important contributing factors: record high levels of sunshine and a significant increase in PV installations on solar energy. Solar Media Market Research Analyst Josh Cornes noted last month that more than 2 GW of Zonne -PV generation capacity was added to the UK in the first half of 2025 – a figure near the total installed capacity added in the whole of 2024 and the strongest start up to a year in the past decade. The UK currently has more than 22 GWP operational PV capacity for solar energy.
Domestic PV installations of solar energy are also increasing, in which Ember pops up that PV installations are at their highest level in ten years at their highest level. Data from the microgeneneration certification scheme (MCS) –He certifies that low-carbon technical installers and products certifies support, with data released earlier this month and noted that in the first half of 2025 120,000 certified solar panel installations in the United Kingdom were 37% compared to the same period last year. That is another solar energy record, where H1 2025 is the previous record for H1 -Zonne installations set in 2012.
Ember attributes the increase in the popularity of Home Solar Installations to the rising energy prices, which currently 10% (£ 152) higher than the same period in 2024, and the falling costs of Zonne -Zonne -Zonne -installations. The MCS notes that the average costs per kW of a solar energy house have been down since the summer of 2023, fell from an average cost of £ 2.009 per kW in 2023 to £ 1.590 this year.
The think tank also notes that the average size of domestic solar installations has risen sharply since the end of the feed-in rate of solar subsidy in 2019, which offered better rates for solar installations under 4 kW. In the past decade, the share of domestic solar capacity consists of installations between 4-10 kW has increased ten times, from only 5% in 2015 to 50% this year.
Image: Ember.
Wind and sun complement each other
The think tank has also stated that the British renewable energy mix of wind and solar PV generation has worked well to balance the variable requirements of the British. Although the first half of 2025 has seen a noticeable increase in high sun days, the generation of wind energy has fallen – the opposite of the situation that was seen at the beginning of 2024. As a result, ENG has calculated that only 2% of the days have delivered both low solar and wind generation in recent times, a contributing factor to the record Low presence of gas electricity generation (21%) on the grid considering this June.
Image: Ember
Em-analyst Frankie Mayo mentioned 2025 “A Golden Year” for solar energy, and added: “Great Britain benefits from a recent push in new solar installations, which limits the need for expensive gas to be under average. This shows why Great Energy Sei to a strong, strong, strong, strong, strong,” stabel, “stabiel,” “
