Smart EV Charging + Solar Panels in North Wales: The Zappi Charger Explained

If you have solar panels installed in North Wales — or you are considering them — then a Zappi EV charger from myenergi is almost certainly the single best upgrade you can make to your home energy system. Here is why, and how to get the most out of it across Flintshire, Denbighshire, and Wrexham.

The Zappi charger has three charging modes that make it unique. In Eco mode, it tops up your EV slowly using excess solar generation before supplementing from the grid as needed. In Eco+ mode, it only charges when there is genuine solar surplus — meaning your car charges entirely from free solar electricity when conditions allow. In Boost mode, it charges at full speed from the grid, just like a standard charger.

For a typical Flintshire home with a 4kW solar system in summer, Eco+ mode will charge your EV entirely from solar on clear days, delivering 15-20 miles of free range per day from a south-facing array. Over a year, this represents roughly 2,000-4,000 miles of free solar-charged driving — worth around £200-£400 at current electricity prices.

The maths gets even better when you consider time-of-use tariffs. During winter months when solar generation is low, the Zappi automatically switches to Eco+ with grid supplement, automatically scheduling grid charging for the cheapest overnight window. Paired with an Octopus Intelligent tariff at 7-15p per kWh, the effective cost per mile drops to just 2-4p — comparable to running a petrol car at current fuel prices.

Installation of a Zappi in Flintshire or Denbighshire follows the same process as any home EV charger. We carry out a free site survey to assess your supply capacity and solar inverter compatibility. The Zappi connects directly to your solar inverter via a CT clamp that monitors generation in real-time, adjusting its charge rate to match surplus output. We install the unit, configure the app, and demonstrate its features before leaving.

Prestatyn and Rhyl coastal homes often have excellent south-facing roofs with high solar yield. A Zappi installation in these areas typically delivers some of the highest solar self-consumption rates in North Wales because of the extended sunshine hours along the Denbighshire coast during summer. Inland properties in Ruthin, Denbigh, and Llangollen benefit from open skies and minimal shading, also giving strong solar performance.

For Wrexham homeowners in Gresford, Rossett, and Llay, who increasingly combine solar with heat pumps, a Zappi charger completes the renewable energy trifecta. On a good summer day, a Wrexham home with 4kW solar, a heat pump, and a Zappi EV charger can run effectively on near-zero grid electricity from around 8am to 8pm — a genuinely remarkable efficiency achievement.

RTS Electrical supplies and installs Zappi chargers across all of North Wales as an authorised myenergi installer. We integrate with all major solar inverter brands including SolarEdge, Fronius, Solis, and Huawei. Contact us for a free site assessment — we will advise on compatibility, installation costs, and realistic solar EV savings for your specific property.