Best EV Charger for Solar Panels UK 2026: Solar Divert Explained
If you have solar panels and an EV, the obvious question is whether you can charge your car directly from your roof. The answer is yes — but only if your charger supports solar divert, and not all that claim to do it properly.
What solar divert actually does
Solar divert monitors your home's energy flow in real time. When solar generation exceeds home consumption, the surplus would normally be exported to the grid at Smart Export Guarantee rates — typically 4–15p/kWh. Solar divert instead routes that surplus into your car at whatever rate is available, from as low as 1.4kW upwards.
The saving depends on your export rate and your energy import price. If you export at 5p/kWh and import at 28p/kWh, every kWh you divert to your car saves you 23p. At 3,000kWh of diverted charge per year (achievable with consistent solar and regular driving), that is £690 saved annually.
Which chargers do it properly
myenergi Zappi: The reference implementation. Three eco modes (Eco, Eco+, Fast) let you choose how aggressively it prioritises solar vs grid. Works with a CT clamp monitoring your import/export. The gold standard for solar-aware charging.
Hypervolt Home 3: Genuine solar divert via Hypervolt's energy monitor. The app implementation is cleaner than the Zappi and the hardware is IP65 rated. Requires the Hypervolt energy monitor to be installed alongside the charger.
Indra Smart PRO: Solar divert with V2G-ready architecture. Works with a range of energy monitors. Less common in the market but well-regarded among installers who specify it.
Wallbox Pulsar Plus: Smart scheduling and load balancing, but no genuine solar divert. It will not route surplus solar into your car — it schedules charging for off-peak periods. That has value but is a different proposition.
Ohme ePod: Integrates with Octopus Agile for dynamic tariff charging, but no solar divert. Strong on grid-smart charging; weak on solar-aware charging.
The setup requirement
Solar divert requires a CT clamp (current transformer) to monitor your home's import/export. This is a separate component that goes in your consumer unit — most installers include it when fitting a solar-divert-capable charger, but confirm before signing. Without the CT clamp, the charger cannot see your solar generation and the divert function cannot work.
Is solar divert worth the premium?
If you are home during the day and drive regularly, yes. The maths above hold up over a typical 5-year period. If you are away during peak solar hours most weekdays and only charge at weekends, the benefit is reduced — but scheduled off-peak charging (available on most smart chargers) still has value.