myenergi Zappi GLO vs Indra Smart LUX: Solar Champion vs Slim Powerhouse

Solar Champion vs Slim Powerhouse: Two Premium UK Chargers Go Head to Head

If you've narrowed your EV charger shortlist down to the myenergi Zappi GLO and the Indra Smart LUX, you're clearly after more than a basic plug-and-charge box. Both of these chargers sit at the premium end of the UK market, both offer solar PV diversion, and both integrate with smart energy tariffs to slash your running costs. But they take very different approaches to get there.

The Zappi GLO is the latest evolution of the UK's best-known solar charger, built around myenergi's unrivalled Eco and Eco+ charging modes and a whole-home energy ecosystem. The Indra Smart LUX, meanwhile, is a newer challenger — UK-designed and manufactured in Worcestershire — that packs class-leading build quality and the slimmest profile of any tethered smart charger into a remarkably capable package. Choosing between them comes down to how seriously you take solar, how much you value design, and whether you need three-phase power.

In a nutshell:

• myenergi Zappi GLO (£599): The undisputed king of solar diversion, with three charging modes and a full home energy ecosystem — but you pay a premium for it.
• Indra Smart LUX (£615): The UK's slimmest smart charger with best-in-class IP67/IK10 protection and integration with over 1,000 energy tariffs — outstanding value for a premium unit.

Spec Comparison

Solar Diversion: Where the Zappi GLO Pulls Away

This is the category that defines the Zappi GLO, and it's where the gap between these two chargers is widest. The Zappi's three charging modes — Fast, Eco, and Eco+ — give you granular control over how much grid electricity you're willing to use. In Eco+ mode, the charger draws exclusively from surplus solar generation, meaning your EV charges for genuinely free. Eco mode blends solar surplus with a minimum grid import to keep the charge ticking over on cloudier days. No other home charger in the UK offers this level of solar intelligence.

The Indra Smart LUX does offer solar PV diversion with a CT clamp included in the box, which is a genuine feature — not just a marketing bullet point. It will divert surplus solar to your car rather than exporting it to the grid. But it lacks the Zappi's dedicated Eco+ mode that guarantees zero grid draw, and it doesn't integrate into a broader energy ecosystem the way the Zappi does with myenergi's eddi hot water diverter and libbi home battery.

If you have a 4kW+ solar array and want to maximise every watt of free sunshine, the Zappi GLO remains the charger to beat. If you have solar panels but treat diversion as a nice bonus rather than your primary charging strategy, the Indra's solar capability is perfectly competent — and £164 cheaper as a starting point.

Smart Tariff Integration

Both chargers are fully compatible with the smart tariffs that make UK EV ownership so affordable. The Zappi GLO works with Octopus Intelligent Go, which is arguably the gold standard — it gives you access to rates as low as 7p/kWh during off-peak hours and lets Octopus automatically schedule your charging around the cheapest slots. As noted by autochain.co.uk, the Zappi is a recommended choice for Octopus Energy customers, particularly those with solar panels.

The Indra Smart LUX takes a broader approach, claiming integration with over 1,000 UK energy tariffs — including variable-rate tariffs like Octopus Agile, where electricity prices change every 30 minutes. This wider tariff compatibility could be an advantage if you're not on Octopus or if you switch providers regularly. The Indra also supports OCPP 1.6, an open charging protocol that future-proofs the unit against new tariff structures and third-party energy management platforms.

For most UK EV owners on Octopus Intelligent Go or Octopus Go (7.5p/kWh between 00:30 and 04:30), both chargers will do the job. But the Indra's sheer breadth of tariff support — and its OCPP compatibility — give it a slight edge for flexibility. According to evergy.co.uk, the Zappi GLO integrates tariff scheduling via the myenergi app, while the Indra handles it natively with its wide tariff database.

Build Quality and Design

Here's where the Indra Smart LUX genuinely shines. At just 78mm deep and weighing only 3.6 kg, it's the slimmest tethered smart charger on the UK market — nearly half the depth of the Zappi GLO (130mm) and 1.8 kg lighter. If your charger needs to sit on a narrow wall, beside a garage door, or in a tight passageway, the Indra's profile is a real practical advantage.

The Indra also wins on protection ratings. Its IP67 + IK10 certification means it's not just weatherproof — it's submersible and impact-resistant. The Zappi GLO's IP65 rating is perfectly adequate for UK weather (rain, frost, the occasional hailstorm), but the Indra's IK10 impact rating offers extra peace of mind if your charger is exposed to passing vehicles, footballs, or general driveway life. The Indra also includes built-in SPD (surge protection device) and PEN fault detection as standard, which can simplify installation and potentially reduce installer costs.

The Zappi GLO, reviewed at 8/10 for design by electriccarguide.co.uk, is described as robust and weather-resistant but slightly bulkier than sleeker alternatives — a fair assessment when stood next to the Indra. That said, the Zappi GLO has removed the on-unit display from the older Zappi 2.1, which some users miss, while the Indra uses a turbine LED status light for at-a-glance feedback.

Power and Charging Speed

The Zappi GLO offers something the Indra simply cannot: a 22kW three-phase option. While fewer than 5% of UK homes have three-phase power, if yours does — or if you're installing in a commercial setting — the Zappi GLO can charge a Tesla Model 3's 60kWh battery in roughly 2.7 hours versus around 8 hours at 7kW. The Indra Smart LUX is single-phase only at 7.4kW.

On single-phase supplies (the vast majority of UK homes), the difference is marginal. The Indra's 7.4kW output is fractionally faster than the Zappi's 7kW — you're looking at about 8.1 hours versus 8.5 hours for a full 60kWh charge. In practice, both will comfortably fill your battery overnight, and on a smart tariff like Octopus Intelligent Go, the charging will be scheduled automatically regardless.

The Zappi GLO is also available in an untethered version, as highlighted by myenergi.com, which suits households with multiple EVs using different connectors. The Indra is tethered only — though it does offer a 10-metre cable option, which is generous and useful for driveways where the car parks further from the charger.

Price and Value

The Indra Smart LUX undercuts the Zappi GLO by at least £164 on unit price alone, and its built-in SPD and PEN fault detection could shave further costs off installation. At the lower end, you could have an Indra fully installed for under £1,000 — or under £650 after the OZEV grant if you're an eligible renter or flat owner.

The Zappi GLO's premium is easier to justify if you have solar panels. Charging entirely from surplus solar in Eco+ mode could save you the full cost of grid electricity — at current rates, that's roughly £500–700 per year for an average UK driver covering 7,400 miles. Without solar, however, you're paying more for features you won't use, and the Indra's broader tariff integration and superior build quality offer better pound-for-pound value.

Who Should Buy Which?

Buy the myenergi Zappi GLO if:

• You have solar panels and want the best solar diversion technology available
• You're building a myenergi ecosystem with eddi or libbi devices
• You have (or plan to install) three-phase power and want 22kW charging
• You need an untethered socket option for multi-vehicle households
• You want RFID access for up to 126 users on a shared driveway

Buy the Indra Smart LUX if:

• You want a slim, discreet charger that barely protrudes from the wall
• Maximum durability matters — IP67 + IK10 is the best protection available
• You want the widest possible smart tariff compatibility, including Octopus Agile
• You prefer a UK-manufactured product with built-in SPD and PEN fault detection
• You want premium features at a lower price point than the Zappi

Our recommendation: For the majority of UK homeowners charging on a smart tariff without solar panels, the Indra Smart LUX is the better buy. It's £164 cheaper, slimmer, tougher, and integrates with more tariffs. Its solar diversion is capable enough for casual solar users, and the build quality is genuinely class-leading. However, if you have a dedicated solar PV system and want to charge your EV for free on sunny days, the Zappi GLO's Eco+ mode is unmatched — and the myenergi ecosystem gives you a roadmap for whole-home energy management that no other brand can match.

For the full specs-level breakdown, see our myenergi Zappi GLO vs Indra Smart LUX comparison page.

Read our full myenergi Zappi GLO review or Indra Smart LUX review.

If you have solar panels, see our best EV charger for solar panels guide.

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