Take Control of Your Energy Future.
Premium solar & battery systems that cut your bills by up to 90% — designed and installed by an award-winning UK team, with Spark’s 30-year design and workmanship guarantee.
See how much you could save — free, no obligation
Fewer than 1% of MCS-registered solar installers are Which? Trusted Traders.
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bills, on average
Take More Control of Your Energy Costs.
Energy prices can rise or fall as markets, demand and supply change. There is no certain long-term path for household bills. Generating and using solar electricity can reduce the amount you need to buy from your supplier.
View the chart figures
| Year | Cost |
|---|---|
| 2006 | £520 |
| 2008 | £900 |
| 2010 | £1,020 |
| 2012 | £1,280 |
| 2014 | £1,340 |
| 2016 | £1,150 |
| 2018 | £1,260 |
| 2020 | £1,140 |
| 2022 | £1,960 |
| 2024 | £1,720 |
| 2026 | £1,780 |
How Much Could Solar Save You?
Move the slider to your current monthly bill to explore an illustrative 30-year scenario. The assumptions below are not a prediction of future prices or a personalised savings estimate.
How this estimate is calculated
Illustration assumes electricity bills rise by 7% each year for 30 years and a 90% bill reduction. It excludes installation costs, finance, maintenance and replacements. This is a scenario, not a forecast or a personalised savings promise.
Confidence in Your Installation.
Premium equipment, workmanship protection and independently validated estimates help you make an informed decision.
30-Year Workmanship Guarantee
Spark’s 30-year design and workmanship guarantee: the first 10 years insurance-backed through HIES, then years 11–30 backed directly by Spark.
Price Match Guarantee
We match qualifying like-for-like quotations submitted before installation begins. See our Price Match Guarantee terms.
Validated Savings Estimates
EPVS independently validates our savings estimates. Generation, bills and returns are forecasts, not guaranteed amounts.
Only the Very Best, as Standard.
We don't sell off-the-shelf systems. Our range is curated for performance and assured quality — AIKO Neostar 3S 490 W all-black panels with 30-year performance and manufacturer warranties, and EcoFlow OCEAN 2 with the applicable 15-year manufacturer warranty.
AIKO Neostar 3S
Global leaders in solar cell innovation, with 1,000+ patents and full supply-chain control.
EcoFlow OCEAN 2
Premium 5 kWh to 48 kWh battery. Individual models and compatible capacities depend on your quoted system; not every inverter supports 48 kWh.
When You Buy from Spark, We're with You for Life.
Most installers disappear after the scaffolding comes down. Every Spark customer gets SparkCare+ — lifelong protection and proactive support, included at no extra cost.
Start Your Free QuoteBi-annual Reviews
A full remote performance & savings review with our team every 6 months — for life.
Bird Barrier as Standard
Complete protection for your panels, cabling and frames from nesting birds.
EcoFlow PowerInsight Tablet
View solar generation and battery storage. PowerInsight complements the EcoFlow smartphone app and is not required for the system to operate.
UK-based Support
Our support centre is here for the life of your system. We never outsource.
£500 Referral Payments
Uncapped — earn £500 every time you refer a new customer to Spark.
Celebration Hamper
A little thank-you delivered to your door once your install is complete.
Effortlessly Simple, Start to Finish.
From your first enquiry to lifelong aftercare, we make the whole process straightforward, professional and transparent.
Enquiry
Suitability call & desktop roof check.
Quotation
Tailored design, savings & finance figures.
Order placed
Home or virtual assessment, deposit.
Confirmed
Final design, stock & scaffolding booked.
Installation
Panels, inverter & battery fitted safely.
Handover
Registration & full handover documents.
Aftercare
Lifelong SparkCare+ support & reviews.
Rated Excellent from 520+ Reviews.
“I can't recommend Spark highly enough — the service was excellent from start to finish. They were consistently responsive, proactive and kept us well informed throughout.”
“Spark were clear that this is not the cheapest but is high quality. They were right — everything checks out as good quality, work was smooth and without issue. Highly recommended!”
“Everything was first rate. The salesman explained how everything worked and the features of the system. Booking was easy and the installation completed ahead of schedule.”
Your Questions, Answered.
Will energy prices continue rising?
Energy prices can rise or fall as wholesale markets, demand and supply change. There is no certain long-term path for household bills. Generating and using your own solar electricity can reduce the amount you need to buy from your energy supplier.
Do I really need to generate my own energy?
Generating your own electricity can give you more control over your energy costs and reduce your reliance on the grid. Adding battery storage lets you save some of your daytime solar generation to use later. Spark designs your system around your home and how you use electricity.
Can I sell energy back to the grid?
Yes. Through the Smart Export Guarantee (SEG) you can sell the excess energy your system generates back to the grid. Rates vary by supplier, so the amount you can earn isn't fixed.
Do solar panels work on cloudy days?
Solar panels generate electricity from both direct sunlight and the diffuse daylight that reaches them through clouds. They produce more power in bright sunlight, but they still work on cloudy days.
Do solar panels need a lot of maintenance?
Very little. Panels are durable and designed to face the elements. The most they need is an occasional clean — and being pitched and self-cleaning, that should be once a year at most.
Can I add to the system later?
Absolutely. If your energy usage rises — perhaps you add an EV, heat pump or hot tub — you can add more panels or battery storage to your existing system at a later date.
Get Your Free, No-obligation Quote
Tell us a little about your home and one of our solar experts will call you back with a tailored, EPVS-validated savings estimate. No pushy sales — just honest advice.
Get My Free Savings Estimate