myenergi Zappi GLO vs Andersen Quartz: Solar logic or seven-year peace of mind

£750 for solar, £695 for the wall it sits on

Two premium chargers, both north of £690, both IP65, both offering solar-aware charging of some description. The difference is where the engineering budget went. The myenergi Zappi GLO at £750 is a solar computer that happens to charge cars. The Andersen Quartz at £695 is a handsome, long-warranty charger that happens to have a CT clamp in the box. The £55 between them is almost irrelevant — what matters is whether you have panels on your roof.

• myenergi Zappi GLO — three solar-diversion modes, myenergi ecosystem integration, three-year warranty. The charger for homes that generate their own electricity.
• Andersen Quartz — seven-year warranty, eleven finishes, compact body, Intelligent Octopus Go support. The charger for homes that care what's bolted to the brickwork.

When the Zappi GLO earns its price

Eco+ mode. That is the entire argument. In Eco+, the Zappi GLO will only charge from surplus solar — not a single watt drawn from the grid. In standard Eco mode, it blends grid and solar to maintain a minimum charge rate. No other charger in this price range does both with this level of granularity. Pair it with a myenergi eddi — actually, no, pair it with the rest of the myenergi ecosystem (eddi for hot water diversion, libbi for battery storage) and you have a household energy system that treats the car as a flexible load. If you already own solar panels, the Zappi GLO belongs on your shortlist. Our best EV charger for solar guide covers the wider field.

The Andersen Quartz includes a CT clamp and its Adaptive Fuse feature, which is solar-aware in the sense that it can modulate charge rate to avoid tripping your supply. It is not surplus-diversion in the Zappi's sense. The distinction matters: the Quartz adjusts *down* to protect your fuse; the Zappi actively chases surplus generation *up*. One is defensive, the other opportunistic.

The Andersen Quartz's quieter advantages

Seven years of warranty. That is more than double the Zappi GLO's three. For a device bolted to an outside wall, exposed to every season the UK can muster, warranty length is not a vanity metric — it is the manufacturer betting on its own build quality. Only the Andersen A3 and the Simpson & Partners Home 7 match or exceed it in our catalogue.

The Quartz is also markedly smaller: 286 × 172 × 110 mm against the Zappi's 439 × 282 × 130 mm. On a narrow side wall or a visible front elevation, that difference is visible from the pavement. And the eleven standard finishes — with optional Accoya and carbon inserts — mean the Quartz can blend into period brick or painted render in a way the Zappi, competent but utilitarian, does not attempt.

On tariffs, the Quartz integrates with Intelligent Octopus Go and OVO Charge Anytime. The Zappi GLO supports smart tariffs too, but its integration is manual rather than API-driven. If your priority is half-hourly tariff optimisation rather than solar, neither charger is the right tool — the Ohme Home Pro at £535 does that job for less. The Ohme vs Zappi GLO comparison spells out the trade-off in detail.

The grant question

The Zappi GLO is OZEV-approved. Eligible renters and flat owners can claim the £500 grant, which takes a meaningful bite out of the £750 unit price. The Andersen Quartz is *not confirmed* on the current eligible-chargepoint list. That is not a technicality — it is potentially £500. If you qualify for the grant and the Quartz isn't approved by the time you order, the real gap between these two chargers inverts: the Zappi becomes the cheaper option by a wide margin. Verify the Quartz's status before committing.

Which to buy

Buy the myenergi Zappi GLO if:

• You have solar panels and want surplus-diversion charging — Eco+ is unmatched at this price
• You are building out a myenergi ecosystem with eddi or libbi
• You qualify for the £500 OZEV grant, which the Zappi supports and the Quartz may not

Buy the Andersen Quartz if:

• You do not have solar panels and want a premium, compact charger with a seven-year warranty
• Wall aesthetics matter — eleven finishes and a body half the size of the Zappi
• You are on Intelligent Octopus Go or OVO Charge Anytime and want native integration without fuss

The honest version: if you have solar, the Zappi GLO is the only serious option here — the Quartz's CT clamp is not a substitute for Eco+. If you do not have solar, the Zappi's £55 premium buys you a solar brain you will never use, while the Quartz gives you four extra years of warranty and a charger your neighbours might actually compliment. For homes without panels, the Quartz is the better £695 spent.