Tesla Wall Connector vs myenergi Zappi GLO: solar or default?

The £272 question is about your roof

Two tethered chargers, two quite different buyers. The Tesla Wall Connector is £478 — the official unit, the longest cable in the round-up, the app already on your phone. The myenergi Zappi GLO is £750 and spends most of its intelligence watching your solar inverter. The £272 gap only makes sense if there are panels on the roof.

The shortest version of each:

• Tesla Wall Connector — the sensible default for any Tesla owner without solar. £478, 7.3-metre cable, native app.
• Zappi GLO — a solar computer with a charging cable attached. £750, Eco+ mode, pointless without generation.

When the Zappi GLO earns its £750

Eco+ is the reason this charger exists. It watches what your panels are exporting and feeds only the surplus into the car — no grid import, no moral arithmetic about whether you're charging from coal at 2pm. Eco does the same job more loosely, topping up from the grid when export dips. Neither mode is something the Tesla Wall Connector can replicate; it doesn't see your inverter at all.

If you're already in the myenergi ecosystem — an eddi sending surplus to the immersion, a libbi storing what's left — the Zappi is the piece that completes the picture. RFID for up to 126 users handles the shared-driveway case. IP65 handles the exposed-wall case. OZEV approval means renters and flat owners get £500 off, which nearly wipes out the gap to the Tesla on its own.

Without solar, though, most of this is ornamental. You're paying £272 extra for modes that will never activate, and for tariff integration that's still manual — the Zappi doesn't pull half-hourly prices from your supplier's API the way an Ohme Home Pro does. If your reason for looking at smart chargers is Octopus Agile rather than photovoltaics, the Zappi is the wrong tool.

When the Tesla is the right answer

For a Tesla owner on a fixed off-peak window — Octopus Go at 8.5p between 00:30 and 05:30, say, or E.ON Next Drive at 7.5p from midnight to six — the Wall Connector does everything needed for £478. Schedule it once in the Tesla app. Done. The 7.3-metre cable reaches further than the Zappi's 6.5 metres, which matters on any driveway where the car parks nose-in one day and reversed the next. Four-year warranty against the Zappi's three.

The caveats are honest ones. No OZEV grant — if you're a flat owner eligible for the £500, the Tesla gives that up, and the gap to the Zappi narrows sharply. IP44 rather than IP65, so a fully exposed wall wants a cover or a porch. No RCD or surge protection built in; the installer adds both, which is already priced into the £400–£600 install estimate. And the scheduling is manual — on Octopus Agile, where prices move every half-hour, the Tesla can't chase them. That's the Ohme's job, not this one.

For a Tesla owner on Octopus Intelligent Go, incidentally, the car handles half-hourly optimisation through Tesla's own API regardless of which charger is on the wall. The Zappi's smart-tariff feature adds nothing there either.

Which to buy

Buy the Tesla Wall Connector if:

• You drive a Tesla and have no solar panels
• You want the longest cable and the native app
• Your tariff has a fixed off-peak window

Buy the myenergi Zappi GLO if:

• You have solar panels and want Eco+ routing surplus into the car
• You're already running eddi or libbi from myenergi
• You qualify for the £500 OZEV grant and want IP65 weatherproofing

For most Tesla owners reading this, the decision is over at £478. The Zappi is a better charger for a specific buyer — the one with a roof array and an ecosystem already half-built. Everyone else is paying £272 for modes they'll never trigger. Solar households wanting a closer look at the smart-tariff side of things will get more from the Ohme vs Zappi GLO comparison; for non-Tesla drivers weighing automation against defaults, the Tesla vs Ohme piece is the more useful read.