Every home’s different, which is why we never use a one-size-fits-all design.
Looking for trusted solar panel installers in London? If you’re searching for reliable solar panels in London, you’ve come to the right place. At Solar4Good, we work with both homeowners and businesses across the city to design and install solar systems that make sense, systems that actually save money, perform well, and last.
Choosing local solar panel installers in London matters. London solar projects come with their own mix of planning quirks, conservation areas and roof types, from Victorian terraces to new-build flats and flat commercial roofs. As solar panel installers in London who are actually based here, we certify every London solar and battery install under our own MCS registration, so whether it is a London solar and battery retrofit or a full commercial system, you deal with people who know the boroughs, not a national call centre.
Four things decide it. Most homes pass on all four, and the one people worry about most is rarely the problem.
The question we are asked most, and the one people get wrong. Due south is best, but in London an east-facing roof still returns about 80% of a south-facing one and west about 78%. South-east and south-west are within 7%. A roof that is not south facing is usually still worth doing.
A 4kW system needs roughly 9 panels and about 18 square metres of usable roof. Panels can be split across two faces where one is not big enough, which is common on terraces and on houses with a rear extension.
A chimney, a dormer or a neighbour's tree costs more than people expect, because shade on one panel used to drag down the whole string. Panel-level optimisers or microinverters fix that, and the survey is where we work out whether you need them.
We check age, covering and structure before anything else. If a roof needs work in the next few years, it is cheaper to do it before the panels go on, and we will say so rather than fit around it.
Our team looks at your roof, energy habits, and future plans to build a home solar that fits neatly into your daily life. We keep things simple, tidy, and efficient, so you start seeing the benefits without the hassle.
For offices, shops, and warehouses, we design commercial solar systems that go beyond saving money; they make your business more self-sufficient. Generating your own power helps stabilise costs, strengthen your green credentials, and reduce your dependence on the grid.
Store the power you generate and charge your car on sunshine. We fit home and commercial battery storage, a matched inverter and a home EV charger across London.
No, and the gap is smaller than most people expect. In the UK the sun sits in the southern sky, which is why a south-facing roof is the 100% case and every other direction is measured against it. Modelled for London.
Each figure is that orientation’s own annual output in London. The compass turns with the house, so the reading is for the way it is facing. Tap any of the five to hold it.
PVGIS (EU Joint Research Centre), 4kW system at a 35 degree pitch. An east or west facing roof in London still returns around four fifths of a south-facing one, which is usually the difference between worth doing and not.
Start with the one figure you already know off your bill. What comes back is what we actually quote a home that uses that much, and what it would make in London.
5,000kWh
It starts at 5,000 kWh, the middle of the 1,504 quotes we hold a usage figure for. The mark shows E: a median of 4,500 kWh across 29 quotes.
What we typically quote a home like that
13panels6.2 kW
Modelled to make 6,213 kWh a year in London, against the 5,000 kWh you use. Over a year that is more than the house gets through, though not at the hours it gets through it.
| System | Panels | Generation a year | Typically suits |
|---|---|---|---|
| 3kWp | 6 panels | 2,987 kWh | Smaller homes, or a roof with one usable face |
| 4kWp | 8 panels | 3,983 kWh | Around the size we fit most often |
| 6kWp | 13 panels | 5,975 kWh | Larger homes, or a household with an EV |
| 8kWp | 17 panels | 7,966 kWh | High usage, an EV and a heat pump |
Generation from PVGIS (EU Joint Research Centre), 35 degree pitch, due south. The size we suggest is the median we quote homes in your usage band across 1,450 quotes, not a rule of thumb: real quoting is much flatter than usage, because roof space caps the top of it. Panels at 480W, the AIKO module in most of our quotes; the 470W DMEGC needs one more for the same output. The table models whole kWp sizes, so its panel counts are the nearest module. What you save depends on your tariff and how much you use during daylight, which is what the free assessment works out. We will not put a figure on it before we have seen your bill.
A 4kW system, modelled across the year. Summer does the heavy lifting, winter keeps going: 486 kWh in Jul against 148 kWh in Dec.
PVGIS (EU Joint Research Centre), 4kW at a 35 degree pitch, due south. This is why a battery earns its keep in summer and the grid still carries you in December.
Not a national average. This is our own quote book for the E postcode area, and these are quotes rather than completed installs.
The median system we are asked to quote in the E postcode area. Half are smaller, half larger, which is a more honest middle than an average.
What that size usually works out to on a roof here, at the panel wattages we fit today.
Of quotes in this area include battery storage. Almost nobody near London is now asking for panels on their own.
Median of 43 sized quotes in E, April to September 2026. Medians rather than averages: one unusually large property would otherwise drag the figure somewhere no ordinary home recognises.
Tell us where you are and how to reach you. An MCS-certified Solar4Good engineer will talk you through what your roof can do, what it would cost and what it would save, with no pushy sales visit.
The 12 British grid regions run from 7 g to 249 g, so London sits cleaner than 6 of them. It is what a unit of grid electricity actually costs in carbon here.
The London region's 12-month average, 16,908 half-hourly readings to the 12 months to September 2026. Source: National Grid ESO Carbon Intensity API (CC BY 4.0).
Tesla Powerwall, SigEnergy, Fox ESS, Duracell and more, we fit trusted, tier-one panels and batteries built for British weather.
London is the heart of our patch: 450 installs across the capital, concentrated around Finchley, Mill Hill and Golders Green in the north and reaching out to Ealing, Wimbledon and Leytonstone, all fitted by our own local teams. Every figure here is a real aggregate from our own completed jobs, part of 3,000+ installs and 50,000+ panels nationwide.
Live install data · updated July 2026
Ranked by real volume across our London-area installs, not a manufacturer’s suggested spec. The panels, inverters and batteries we fit most, and the system sizes London roofs actually take.
Based on the 94 installs around London where the panel brand was recorded.
Based on the 304 installs around London where the inverter or battery brand was recorded.
Based on the 274 installs around London where the system size was recorded.
We have completed 450 installs across London. Search your postcode or tap the map to find your nearest; the map highlights our busiest London areas, with the rest spread across smaller postcodes. Wherever you are in the London postcodes you have a genuinely local team, based here, not a call centre. We cover the whole London area.
Covering Colindale, Cricklewood, Ealing, East Finchley, Finchley, Forest Hill, Golders Green, Leytonstone, Mill Hill, Whetstone, Willesden, Wimbledon and more. Do not see your street? Search above, we very likely still cover you.
Solar PV installation can significantly reduce your electricity bills, providing long-term savings.
Solar energy is clean and renewable, reducing greenhouse gas emissions and helping combat climate change
By generating your own electricity, you can reduce reliance on the grid and protect against rising energy costs.
Solar panels can increase the value of your property and make it more attractive to potential buyers.
That’s where we’re different. Solar4Good isn’t a faceless nationwide installer. We’re a hands-on team that actually knows London, the rooftops, the regulations, the weather, and what it really takes to make solar work in this city.
We only use technology we’d trust on our own homes. That means strong, efficient London solar panels, reliable inverters, and solid battery systems that handle the city’s changing seasons without fuss.
We believe in honesty. You’ll always know what’s happening and why, no fine print, no inflated promises.
It’s straightforward, professional service, from a team that genuinely enjoys helping London homes and businesses get more from solar.
At Solar4Good, we don’t just fit panels and call it a day, we build full solar energy setups that make sense for how you live or work. Whether you’re trying to cut bills, reach sustainability goals, or add EV charging to your site, we’ll guide you through it all from start to finish.
There is no special London price for solar. What you pay depends on your roof, how much power you use and whether you add a battery, not your postcode. Around London the system we fit most is about 4kW, and a typical home installation lands in this band, confirmed exactly with a clear, itemised quote after a free assessment.
Including 2 verified reviews from the London area, alongside more from homeowners across the UK.
Real Solar4Good projects close to London, homes and businesses we have taken solar from first quote to switch-on.
The things London homeowners and businesses actually ask before going solar.
The cost of solar panels for a home in London can vary depending on factors such as the size of the system, the type of panels chosen, and installation costs. On average, a typical residential solar panel installation in London can range from £5,000 to £10,000. However, government incentives and financing options may help offset some of these costs. In London, a typical home installation lands in the £5,500–£6,500 range, confirmed exactly after a free assessment.
In most cases, solar panel installations on residential properties in London are considered permitted development and do not require planning permission as long as specific criteria are met. However, it’s recommended to check with your local planning authority or consult with a professional installer to ensure compliance with regulations.
Solar panels installed in London typically have a lifespan of 25 to 30 years or more. While the initial investment in solar panels is significant, their long lifespan ensures that they provide a reliable and sustainable source of energy for decades to come.
The efficiency of solar panels in London depends on various factors, including the orientation of the panels, shading, and weather conditions. On average, solar panels installed in London can have efficiency ratings between 15% to 22%, meaning they can convert 15% to 22% of sunlight into usable electricity. Across our London installs, 4kW is the system size we fit most.
Yes, there are several incentives available for solar panel installations in London, including the Smart Export Guarantee (SEG) and the Renewable Heat Incentive (RHI). These schemes offer financial incentives and payments for generating renewable energy, helping to offset the cost of solar panel installations.
Yes, solar panels can still be installed on roofs that are not south-facing in London. While south-facing roofs typically receive the most sunlight throughout the day, solar panels can still generate significant electricity on east-facing or west-facing roofs. A professional installer can assess the orientation and suitability of your roof for solar panel installation.
The payback period for solar panel installations in London can vary depending on factors such as the cost of the system, energy savings, and available incentives. Payback depends on system size and how much of the electricity you use during daylight. As a guide, most home systems in London typically pay back in 8 to 12 years, and larger commercial systems are usually faster. Our calculator gives you a figure for your own roof in about a minute. With 450 installs completed around London, we base your estimate on real nearby jobs, not a generic average.
Generate clean, renewable electricity Reduce your energy bills by up to 70% Get paid for unused electricity *Dependent on the customer’s consumption, generation and electricity cost at the time of install.
It depends on your roof and how much electricity you use, not on the town. Modelled by PVGIS, a 4kW system in London returns about 3,983 kWh a year, and the median system we are asked to quote in the E postcode area is 5.64 kW. Whether that adds up for you comes down to your tariff and how much you use during daylight, which is what the free assessment works out. We will not put a figure on it before we have seen your bill.
About 3,983 kWh a year from a 4kW system, modelled for London by PVGIS (the EU Joint Research Centre) at a 35 degree pitch facing south. It is not spread evenly: roughly 471 kWh in May against 148 kWh in December. Your own figure depends on which way the roof faces, its pitch and any shading, which is what the survey measures.
No. They run on daylight rather than heat or direct sun, so they generate on overcast days too. London shows it plainly: the same 4kW system still returns about 148 kWh through December, the dullest month of the year here.
Yes. We survey and install across the NW postcodes, including NW7, N2, NW9, N3, W5, N20, E11 and NW10. If your postcode is not in that list it is still worth asking, because the list is drawn from where we actually work rather than a radius drawn on a map.
Yes. Work is carried out under our own MCS registration. That matters beyond the badge: MCS is the UK government-recognised standard for solar installations and it is what the Smart Export Guarantee requires, so without it you cannot be paid for what you export. You can check any installer, us included, by name at mcscertified.com before you commit.
Check three things before you compare prices. That the installer is MCS certified, because the Smart Export Guarantee depends on it. That the quote is itemised, so you can see the panel, the inverter and the battery separately instead of one number. And that the workmanship warranty is written down, with who honours it named. It is also worth asking who files your DNO paperwork, because that is the step most often left to the customer.
They cut what you buy from the grid, and how much depends on your tariff, when you use power and whether you add a battery. In the E postcode area 94% of the systems we are asked to quote include storage, which is what lifts the share of your own generation you actually use. We will not put a saving figure on it before we have seen your bill.
Solar panels turn daylight into electricity: the panels generate DC power, an inverter converts it to the AC your home uses, and anything you do not use can charge a battery or export to the grid. They run on daylight rather than direct heat, so they work all year round. Every system we fit in London is sized and wired to your own roof and usage.
It depends on how much electricity you use, your roof space and whether you add a battery, not your postcode. The system we fit most around London is about 4kW; after a free assessment we size it to your actual bills so you are not over- or under-panelled.
Yes. Solar panels run on daylight rather than heat, so they still generate on overcast days and through winter, just less than at the height of summer. For London that is about 148 kWh in December against 471 kWh in May from the same 4kW system, which is why we size systems around your annual usage rather than a single sunny day.
As well as cutting your bills, solar and battery systems can make a home more appealing to buyers, and several studies link them to a modest uplift in value. In London, the day-to-day saving on your electricity is usually the bigger draw, with any resale benefit on top.
Free assessment, honest numbers, and your MCS-registered installers, based right here in London.
Location pages are just the start. Dig into the service that fits your roof.
New to solar in London? These guides answer the questions we hear most.