If you’re weighing up solar panels and an EV charger, the question that actually matters isn’t “which one first” — it’s whether to install them together. Get the sequencing right and you can shave hundreds of pounds off scaffolding and labour, size your inverter and consumer unit once instead of twice, and set up a night-rate charging strategy that makes the whole system pay back faster. Get it wrong — bolt-on charger this year, solar retrofit next year — and you pay for two separate site visits, two sets of DNO paperwork, and possibly an inverter that’s now undersized for what you actually want to run.
This piece works through realistic 2026 UK pricing for solar, battery and EV charger installed together, why combining the jobs is genuinely cheaper rather than just convenient, and how to structure your electricity tariff so the car charges from your own panels or from cheap overnight power rather than peak-rate grid electricity.
Why combine solar, battery and EV charger into one install
An EV charger on its own is a relatively simple job: a single circuit back to the consumer unit, a DNO notification (and sometimes approval, if your supply capacity is marginal), and a wall-mounted unit. Solar PV is a bigger job — roof survey, mounting rails, inverter, and its own circuit into the consumer unit. Do both separately and you pay for two lots of scaffolding (or two lots of access equipment), two electrician call-outs, two sets of certification (MCS for the solar, plus the charger’s own compliance under the Electric Vehicle Chargepoint Grant rules where applicable), and in some cases a consumer unit upgrade twice over as each installer works around what’s already there.
Combine them and a competent installer designs the whole electrical distribution once: one consumer unit review, one DNO notification covering the full future load, and — critically — an inverter and battery sized with EV charging in mind from day one, rather than an afterthought bolted onto a system that was speced for a house with no car to charge.
There’s a second, less obvious saving: labour efficiency. An electrician who’s already on your roof and in your loft running solar cabling can run the EV charger’s supply cable in the same visit for a fraction of the cost of a dedicated return trip. Installers who do this regularly, such as Premier Electrical Renewables, who install solar, battery and EV charging as a single package across their region, typically quote the combined job at 10-15% less than the sum of two separate quotes — mostly saved scaffolding, access and second-visit labour.
What the combined install actually costs in 2026
These are realistic installed price ranges for GB in 2026, all currently at 0% VAT for residential installs (the relief runs until 31 March 2027, after which it’s scheduled to revert to 5% — so timing matters if you’re on the fence).
| Component | Typical size | Installed cost (2026) |
|---|---|---|
| Solar PV | 4kW (10-11 panels) | £6,000 – £8,000 |
| Solar PV | 3kW (smaller roof) | ~£5,000 |
| Solar PV | 10kW | £13,000 – £17,000 |
| Home battery | ~5kWh | £4,000 – £5,500 |
| Home battery | Tesla Powerwall 3 (13.5kWh) | £8,500 – £10,500 |
| EV charger (7kW, single) | untethered/tethered | £800 – £1,300 |
| Combined 4kW solar + 5kWh battery + 7kW charger | typical semi | £11,000 – £15,000 |
The exact figure depends heavily on your roof (pitch, orientation, scaffolding access, tile type), your existing consumer unit and supply capacity, and whether you need a DNO application for a stronger connection (increasingly common once you add both battery charging and EV charging load to a property). Get quotes from installers who’ll survey in person — a desk-based estimate from a photo is not a substitute for someone checking your fuse board and earthing arrangement. Regional installers like ECO Aim in Central Scotland or Green Linc Renewables in Lincolnshire are MCS-certified and will give you a proper site survey rather than a generic online quote.
Battery sizing deserves particular care in a combined install. A 5kWh battery might comfortably cover an evening’s household use from daytime solar generation, but if you’re also planning to trickle-charge an EV overnight from a cheap tariff and then run the house off battery the next day, you may want to size up — 10kWh+ — so the battery isn’t drained by breakfast. This is the sizing conversation a generalist electrician doing a bolt-on charger install will never have with you, because they’re not looking at your whole energy picture.
Why battery + EV charger together beats either alone
A battery on its own is arbitraging your own tariff: charge cheap, use expensive. An EV charger on its own is just a faster, safer way to top up a car than a three-pin plug. Put them together and the maths changes, because the battery can act as a buffer between your solar generation, your grid import, and your car’s charging schedule — smoothing out what would otherwise be lumpy, inefficient use of all three.
Two patterns are worth understanding:
Solar-diverted EV charging. Some inverter/charger combinations (or a smart EV charger with solar-matching, like a MyEnergi Zappi or similar) can throttle the car’s charge rate to match exactly what your panels are exporting at that moment, so you use your own free daytime generation rather than sending it to the grid at export-tariff rates and then buying it back at import rates to charge the car later. On a sunny day with the car home, this alone can put 15-30kWh of free charge into a battery-equipped EV — most of a week’s commuting for many drivers.
Night-rate arbitrage. On EV-specific tariffs (Octopus Intelligent Go, EDF GoElectric, similar products from most major suppliers), overnight rates commonly sit at 6-8p/kWh compared with a typical variable import rate of around 25p/kWh under the Ofgem price cap. If your home battery charges from that same cheap overnight window — rather than only from daytime solar — you’re using off-peak grid electricity to run the house all the next day too, not just to charge the car. This is the single biggest lever most homeowners are leaving unused: they’ll happily put the car on a night tariff but leave the home battery charging on a flat rate, or vice versa, because nobody’s coordinated the two.
The Smart Export Guarantee is the other side of this. Export rates aren’t fixed nationally — they vary by supplier and currently range from a few pence up to around 12-20p/kWh at the better end. If your export rate is weak, it often makes more financial sense to use your own solar for EV charging or battery top-up rather than exporting it for a low SEG payment and buying grid electricity back later at import price. Run the numbers on your specific supplier’s SEG rate before assuming export is always the best use of surplus generation — it frequently isn’t.
Sizing and sequencing: what to tell your installer
If you’re planning to buy an EV within the next 2-3 years but don’t have one yet, say so explicitly when you get your solar quote. It changes three things: the DNO notification (some networks want to know about anticipated future load, not just what’s being installed now), the inverter’s rated output (a hybrid inverter sized only for today’s household load may need replacing rather than just adding to, later), and the consumer unit’s spare ways. All three are cheaper to get right at the first install than to retrofit.
If you already have an EV and are now adding solar, tell the solar installer your charging pattern — home overnight, home during the day, mostly public charging — because it changes whether a battery earns its keep. A driver who’s rarely home in daylight gets far less value from solar-diverted daytime charging and more from a battery that stores the day’s generation for an overnight top-up instead.
Commercial fleets and larger sites face the same logic at bigger scale. A business with vans returning to depot overnight has a similar arbitrage opportunity to a household EV driver, just with bigger numbers — and the finance structures differ too. Commercial Solar Finance and [Solar Asset Finance](https://solarasset finance.co.uk/) both work with commercial operators on financing solar-plus-storage-plus-fleet-charging as a single asset rather than three separate purchases, which mirrors the domestic combined-install logic almost exactly — one design, one finance package, one set of savings compounding together.
Who should actually install this
MCS certification matters for the solar element regardless of whether you combine it with a charger — it’s the qualification that makes you eligible for the Smart Export Guarantee, and no MCS certificate means no SEG income, full stop. For the EV charger, look for an installer who’s comfortable with both the electrical certification (BS 7671 wiring regs) and the OZEV/chargepoint compliance where a grant applies. Installers who do both solar and EV work as a matter of course — rather than treating the charger as an add-on service — tend to design the consumer unit and DNO paperwork properly the first time.
Doncaster and South Yorkshire homeowners looking at a combined install have used ElectriFusion Solutions for exactly this kind of joint solar-and-electrical work, while in West Kent, Hazell Electrical covers both the renewables and general electrical certification side under one roof — useful when your consumer unit needs attention as part of the job rather than as a separate quote later. In Yorkshire more broadly, YEERS installs solar, battery, heat pump and EV charging as a single combined service, which is precisely the joined-up approach this article has been arguing for.
The bottom line
A combined solar + battery + EV charger install in 2026 typically costs £11,000-£15,000 for a modest domestic system (4kW solar, ~5kWh battery, single 7kW charger), against 0% VAT until March 2027. That’s meaningfully less than commissioning the same three components as separate projects over two or three years, both in upfront labour and access costs and in the ongoing running costs once night-rate tariffs and solar-diverted charging are coordinated rather than left to chance. If you’re only doing one thing this year, at least have the conversation about the other two with your installer before the scaffolding goes up — it’s the cheapest moment in the whole project to get the sizing right. For a broader breakdown of what solar alone costs by system size, see our cost of solar panels in the UK guide, and for battery-specific pricing, our solar battery storage costs page runs through the options in more detail.
Use our solar panel calculator to model your own roof and usage pattern before you get quotes — it’ll give you a sanity-check figure to compare installer proposals against, which matters most on a combined job where three components are being priced as one number.