Solar Surges Past Records: Why 2025 is the Year to Go Green


Integrated solar installation on a roof in London

When it comes to renewable energy, 2025 is shaping up as a breakthrough year for solar power in the UK, fantastic news not just for the planet, but for homeowners and businesses too. If you’re worried you may have missed out for this year, don’t fret, there’s still time to join the solar revolution.

Record Generation and What’s Driving It

2025 has been a record breaking year for solar, the first six months of 2025 saw the UK produce a record 9.91 terawatt hours (TWh), a year on year increase of around 32%. 8th July saw the highest ever recorded moment of solar power in Britain with around 14 gigawatts (GW) of instantaneous output being connected to the grid.

Moving onto the second quarter of the year and output increased again, with over 11% of the UK’s electricity being produced by solar. An unusually sunny start to the year helped maximise output, along with a acceleration in roof top solar adoption across the UK.

For SolarTherm UK, this confirms what many homeowners already feel – solar energy is no longer a niche – it’s a mainstream, high impact part of the UK energy system.

Lower Bills: What This Means for You

One of the most persuasive benefits of this record year for solar is the potential for real savings on energy bills, especially when you are generating your own power. If you own solar panels, a large portion of your daytime electricity demand can be met and by installing a solar battery alongside your solar panels, you can further reduce your bills by covering your evening demand by storing surplus daytime electricity. You can also get paid for your surplus electricity by exporting it back to the grid. The Smart Export Guarantee (SEG) pays you to export surplus electricity rather than letting it go to waste.

Higher solar generation can also help the cost of supplier electricity reduce. The price of each unit of electricity is determined by the most expensive source, which even though fossil fuel generated electricity provides less than 30% of the supply, the high prices of wholesale fossil fuels are keeping UK electricity prices sky high.

Solar technology is improving, giving better performance and longer lasting components than ever before. The cost of solar has significantly dropped by over 80% in the last decade, making it more affordable than ever before. Solar technology is becoming more compatible with smart devices such as EV chargers, heat pumps and home appliances. All these developments mean you can maximise your performance and enjoy quicker payback and stronger savings.

In short, 2025’s solar boom is more than just a statistic, for SolarTherm UK customers, installing solar today can cut your bills, speed up return on investment and insulate you from rising energy costs.

Higher Property Value: The Green Premium

It isn’t just your bills that benefit, property values do too. Homes with solar panels are valued at up to 14% more than those without energy efficiency upgrades. As solar becomes more mainstream, having solar panels is sought after, adding a strong appeal for buyers and investors.

Energy efficiency and lower ongoing running costs are now major selling points in the residential market. A home that is already generating a portion of its own electricity stands out as future proofed and energy independent. Investors looking to purchase properties to rent are looking for rental ready properties with high EPC (Energy Performance Certificate) ratings and energy efficiency qualities.

SolarTherm UK customers are ahead of the curve, increasing their property values and energy efficiency. By installing solar panels, they future proof their home from rising energy costs, changes to energy efficiency requirements and gain energy independence.

Why 2025 Is the Right Year

  • The record generation figures show we are entering a new phase of solar dominance in the UK energy mix, solar is no longer the marginal choice.
  • The cost benefit for homeowners is stronger than it has ever been, better savings, better tech and strong resale value.
  • Waiting means you risk being “one step behind”.

Installing now means you’re part of the solar revolution sooner, benefitting from lower energy bills and taking back the power of your energy future.

Ready to Join the Solar Revolution?

Contact SolarTherm UK today for a free no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice.

Your home. Your energy. Your future.