2025: A Record Year for Solar in the UK — And What We Predict for 2026
- Holly
- Dec 3, 2025
- 3 min read
2025 has been a milestone year for solar energy in the UK. At Solar Upgrades, we’ve seen unusually high interest this year and an especially high interest continuing into winter — from both homeowners and businesses looking for long-term energy stability.
And the national data backs it up: 2025 has officially become the UK’s strongest year on record for solar installations and solar power generation.
Below, we break down what’s driving this surge and what we expect for 2026.
A Quick Note on Rachel Reeves’ Budget
The Autumn Budget has left many households and businesses more concerned about long-term costs. With frozen tax thresholds, rising electricity pressures and EV mileage charges coming in 2028, many people are looking for ways to gain more control over their monthly bills.
This has naturally pushed more interest toward solar and battery storage — one of the most effective long-term ways to reduce reliance on grid electricity.
Solar offers:
Lower daytime energy costs
Access to cheap overnight tariffs
Protection from future price rises
Greater energy independence
It’s clear that more people are now thinking about solar as a financial planning decision, not just an energy upgrade.
Record-Breaking Solar Growth in 2025
⭐ Record Installations
The UK surpassed 203,000 certified solar PV installations in 2025, breaking the previous all-time record from 2011.
By Q3:
Over 185,000 domestic + commercial systems had been installed
A 37% increase year-on-year
It’s official: 2025 is the biggest year for UK solar adoption ever recorded.
⭐ Record Solar Generation
2025 solar output also smashed past records:
9.91 TWh generated in the first half of 2025 — up 32% vs 2024
A record 14 GW peak output was reached on 8 July 2025
The UK had its sunniest spring since 1910, further boosting generation.
Why Homeowners Are Turning to Solar
✔ Rising long-term energy costs
Concerns about future bills remain one of the biggest motivators.
✔ Falling technology prices
Solar PV and battery storage are more affordable than ever.
✔ New-build homes leading adoption
Since October 2023:
32% of all installations came from new builds
In 2025 that rose to 35%
June 2025 set a new monthly installation record
Solar is rapidly becoming a standard feature of modern housing.
Why More Businesses Are Going Solar
We’ve seen a major rise in commercial enquiries. Businesses are reacting to:
Increasing electricity overheads
Sustainability requirements
The need for energy resilience and predictable costs
Solar allows companies to reduce long-term operating expenses and strengthen their green credentials.
What’s Supporting This Growth?
Key factors include:
MCS certification, helping guarantee system quality
Improved efficiency from newer solar technologies
Greater awareness of solar as a long-term financial tool
Exceptionally strong weather conditions boosting output
Solar Upgrades’ Predictions for 2026
🌟 1. Battery storage adoption will accelerate
As people seek more independence from the grid.
🌟 2. Commercial rooftop installations will grow significantly
Especially among warehouses, retail sites and manufacturing.
🌟 3. Solar-powered EV charging will become common
More homes will use solar + battery setups to charge EVs cheaply.
🌟 4. New-build installations will continue rising
We expect well over one-third of 2026 new homes to include solar arrays.
🌟 5. Solar will cement itself as financial planning
Rising energy costs will make self-generation part of household budgeting.
🌟 6. Stricter EPC standards will push more homes & businesses to adopt solar
Upcoming changes to EPC requirements are expected to put pressure on both homeowners and commercial property owners.Solar PV is one of the most cost-effective and impactful ways to increase energy efficiency ratings — meaning many will turn to solar simply to meet new EPC standards.
🌟 7. Solar tech will hit new efficiency records
Expect more powerful panels and better-performing batteries at lower prices.
Final Thoughts
The bottom line:The conversation has shifted. Solar isn’t a fair-weather upgrade — it’s now a year-round financial strategy for energy security and long-term cost control.
Thank you to every homeowner and business that has chosen Solar Upgrades. Your commitment to cleaner, smarter energy is what drives us.
If you’re considering solar or battery storage, winter is the perfect time to plan for a spring installation.
We’d love to help you explore your energy goals.
📞 Contact Us
Home Solar Enquiries: hello@integrisolar.co.uk
Business Solar Enquiries: info@solarupgrades.co.uk
📱 Mobile: 07441 369505
☎️ Call: 01837 352 505
💬 WhatsApp: 07405 914400
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