Adding an EV charger alongside solar panels: what your installer needs to check
Solar panels and an EV charger are a natural pairing in principle — daytime generation can go straight into charging a car instead of being exported at a lower rate — but combining the two isn't purely a matter of plugging one more thing into the consumer unit. A few checks matter more once solar is already on the property, and it's worth understanding them before assuming a charger installation will be straightforward.
Every new EV charger has to be notified to the property's Distribution Network Operator, the DNO, regardless of whether solar is involved. Only very low-power chargers, at or below 3.68kW (16A), are commonly treated as non-notifiable in isolation, and even then, notification is commonly still required if the property already has another significant load such as solar PV, a heat pump, or an electric shower rated above 9kW. In practice, most chargers people actually buy today run at 7.4kW and require notification regardless of what else is on the property. This matters specifically for solar households because having panels already installed can push what would otherwise be a "no notification needed" charger into notifiable territory, simply because the DNO needs visibility of the property's total connected load, not just the new charger in isolation.
Most straightforward DNO notifications are processed reasonably quickly, and many are approved automatically where the existing supply clearly has headroom. Where a property already has solar, a heat pump, or another significant existing load, though, a manual review or even a site visit is more likely, sometimes carrying a modest administrative fee, since the DNO needs to check that the combined load, including the panels' export capacity as well as the charger's import demand, sits within what the local network connection can handle. This is a sensible reason to loop in the same installer who fitted the solar, or at least share full details of the existing system, rather than treating the EV charger as a completely separate job with a different electrician who isn't aware of what's already connected.
Where the combined load of an existing system and a new charger is a concern, a DNO or installer may require a load management device, sometimes called load balancing, commonly costing in the region of £150-£300. This works by monitoring the property's total electricity draw and automatically reducing the charger's output when other large loads, such as an electric shower, oven, or heat pump, are running at the same time, then allowing it back up once demand elsewhere drops. This isn't specific to solar households, but it comes up more often for them simply because solar installations are frequently paired with other significant loads on the same supply.
It's worth being realistic about how much of an EV's charging solar can actually cover. Daytime generation is genuinely useful for charging while a car is parked at home during the day, but most household charging happens overnight, when panels aren't producing anything at all. Many households end up combining daytime solar self-consumption where the car happens to be home, a battery to store some daytime surplus for evening use, and a separate low-cost overnight tariff or EV-specific tariff to cover the bulk of charging that happens after dark — rather than expecting solar alone to meet most of the car's charging needs.
On grants, the position has narrowed considerably compared with a few years ago. Homeowners with their own driveway are generally no longer eligible for a government EV chargepoint grant, since that route closed in 2022. Current EV Chargepoint Grant funding is commonly aimed at renters and long-leasehold flat owners, worth up to around £500 towards installation from 1 April 2026 and subject to landlord or freeholder consent, alongside a separate scheme for landlords installing chargers at rental properties, extended to 31 March 2027 and worth up to around £500 per socket, capped per landlord each year. Installations under these schemes commonly need to be carried out by an OZEV-approved installer. Because eligibility and amounts have changed more than once in recent years, it's worth checking current terms directly on gov.uk before assuming a specific figure applies to your situation, rather than relying on an older article's numbers.
For most solar households, the practical takeaway is simple: treat an EV charger as an addition to your existing electrical setup rather than an isolated purchase, make sure whoever installs it knows exactly what's already connected, including the solar system's size, and confirm DNO notification and any load management requirement upfront rather than after the charger is already on the wall.
Frequently asked questions
Yes — while very low-power chargers at or below 3.68kW can sometimes avoid notification, this generally doesn't apply if the property already has a significant load such as solar PV, meaning most solar households will need their EV charger notified to the DNO regardless of the charger's power rating.
A load management device monitors your property's total electricity draw and automatically reduces the EV charger's output when other large loads are running, then allows it back up afterwards; it's commonly requested by DNOs or recommended by installers where an existing load such as solar, a heat pump or an electric shower is already on the same supply, and commonly costs around £150-£300.
Only partially for most households, since most charging happens overnight when panels aren't generating; many solar households combine daytime self-consumption when the car is home, a battery for evening use, and a low-cost overnight or EV-specific import tariff to cover the rest.
Generally no — that route closed in 2022. Current EV Chargepoint Grant funding is mainly aimed at renters and long-leasehold flat owners, and separately at landlords installing chargers at rental properties, so check current eligibility and amounts on gov.uk before assuming you qualify.