Family-run solar, fitted right first time
SW3 Green Energy has been installing across London and the South East for over 20 years. We survey, design, fit and sort the paperwork, so you just enjoy lower bills.
- 20+ years
- Family-run
- Fully insured
★★★★★“Installation was carried out in just one day and we were briefed thoroughly about the system before they left.”
Caroline Warwick, SW3 customer
Get your free quote
No-obligation. We'll call you back to talk it through, usually the same working day.
Certified, accredited and reviewed by the people who check installers
Everything to make, store and use your own power
Solar PV and battery storage are our specialism. We also fit heat pumps and EV chargers, and look after systems once they're up.
Domestic solar panels
We survey your roof, design a system around how you use energy, and fit it with our own team.
Explore home solar
Commercial solar panels
Cut running costs for offices, units and farms, with planning permission support when it's needed.
Explore business solarBattery energy storage
Keep the power you make in the day for the evening, and charge cheaply overnight.
Solar panel maintenance
Health checks, cleaning and repairs for any system, including ones we didn't fit.
Solar and battery coversNew
Shield an outdoor battery from weather and wear to help it last.
Tesla Powerwall
Whole-home battery with backup if the grid goes down.
Enphase micro-inverters
Every panel works on its own, so shade on one doesn't drag the rest down.
SigEnergy
All-in-one battery and inverter that grows with your needs.
Air source heat pumps
Low-carbon heating that pairs well with solar.
EV chargers and upgrades
Zappi, Hypervolt, Wallbox and more, fitted to charge from your panels.
Not sure what you need? Tell us about your home and we'll suggest a sensible setup.
We handle it all, start to finish
From the first chat to the final paperwork, one family team looks after your project. You'll know who's coming and what happens next.
Free survey
We visit, look at your roof, meter and usage, and answer every question.
Clear quote
A detailed, no-obligation quote with the setup we'd recommend and why.
Installation
Our own engineers fit your system, often in a single day, and leave it tidy.
Set up and aftercare
We connect your apps, register with your energy supplier and stay on hand.
Or call 0204 538 1967
Brands we trust on our customers' roofs
We fit kit from manufacturers we know and rate, and we'll explain which one suits your home.
Tesla Powerwall
A home battery that stores solar power and can keep your lights on in a power cut.
About Powerwall
Enphase micro-inverters
A small inverter on every panel, with performance you can check panel by panel.
About Enphase
SigEnergy
A modular battery and inverter system that can grow as your needs change.
About SigEnergy
Already know which battery you want? Ask about current Tesla Powerwall offers.
What our customers say
Real reviews from homes we've fitted. You'll meet the same names: Chris, Paul, Sherri, Matt and Constantine.
Excellent service from initial enquiry through to completion. Paul and Chris run a great team and are hands on to ensure everything runs smoothly. Installation was carried out in just one day and we were briefed thoroughly about the system before they left. Wouldn't hesitate to recommend SW3 and so happy we found them.
A big thank you to Chris, Paul, and the whole team at SW3 Green Energy Services Ltd! A couple of months ago, I had a 15-panel solar system installed, complete with microinverters and a Powerwall battery. I'm already seeing real savings, especially with being able to make the most of off-peak rates and getting good returns from my energy provider's export rates.
What really impressed me about SW3 Green Energy was their reliability and professionalism. They were on top of everything from the first quote to the final paperwork. My setup was a little complex, with specific requirements around the placement of the Gateway and Powerwall, plus integration with my Zappi EV charger. They handled it all seamlessly.
Even when my energy provider botched the smart meter installation, leaving my system down, Chris came back to sort things out and got it up and running again.
Stellar experience from start to finish. Chris, Paul, Sherri and anybody on their team has been extremely competent and nice to deal with. They inspected my property, provided a detailed survey suggesting a sensible setup, with good explanations about how it would all work together and they provided a very reasonable quote, with highest quality materials. By the end of the day they were able to get all my apps set up and properly configured with the energy provider.
I'd highly recommend using SW3 for my new solar panels and battery purchase and install. The entire process was so smooth, from initial booking to the quick installation on the day. Thank you.
Very professional from start to finish. Excellent communication, installation of solar panels, battery charger and other equipment was on time and Constantine, the engineer, worked tirelessly with a minimum of fuss and bother. Follow up has also been excellent. Thank you.
We were quoted for 14 panels and 2 batteries and an installation date was set for 2 months later. Everything was delivered on time and the team arrived when agreed. The work was carried out by one electrician who was excellent. It was a very neat installation and done in a day and a half. Any queries were dealt with promptly and to our satisfaction. We would recommend the company.
SW3 installed an excellent system to our home and provided exceptional service. They prioritise customer satisfaction. They strived to meet even our bespoke requests and their rates are fair. Kudos to Chris for the wonderful process from the initial discussion til post-installation, and for always keeping me updated. Kudos also to Matt who installed our system and who was really hardworking and knowledgeable. I would definitely recommend SW3 to everyone.
Join them. Get a free, no-obligation quote from the same team.
Years of keeping it simple and above board
Our green energy story began in the heart of London over two decades ago. We're still family-run, and still the people who answer the phone.
Over 20 years
Reliable renewable energy systems that stand the test of time.
All above board
All our work is fully insured and backed by solid guarantees.
Family first
Rooted in London and the surrounding communities, with a personal service.
No obligation
Hassle-free quotes. It starts with a simple conversation.
A brand new, fully electric van fleet
Part of practising what we preach. Look out for us on your street.
Installing across London and the South East
Based in Walton-on-Thames, our engineers cover London, Surrey, Kent, both Sussexes and the South West.
Offers and new services
Switch to Octopus and get £50 off your first bill
Sign up to Octopus Energy's 100% renewable electricity through our referral link and £50 comes off your first bill. Octopus also has export tariffs that suit solar homes.
New: solar battery covers
Protect your investment from weather and wear. A cover helps an outdoor battery last longer and keeps it performing at its best.
Refer a friend
Know someone thinking about solar? Send them our way and we'll say thank you.
Want to know what solar could do for your bills? Ask for a free survey.
Why homeowners are going solar
- Lower bills. Solar can cut electricity bills by up to 80%, depending on how much you use and when.
- Earn from what you don't use. Sell spare electricity back to the grid on an export tariff.
- Low running costs. Panels need little upkeep once installed.
- A smaller carbon footprint. Clean power from your own roof.
- Charge your EV from the sun. Pair solar with a smart charger like a Zappi.
Ready to make your own power?
Tell us a little about your home and we'll come back with a free, no-obligation quote. Or just ring, we're happy to talk it through.