Indra Smart LUX vs Enphase IQ EV Charger 2: Solar logic or standalone value?

The £164 question — and the ecosystem behind it

The Indra Smart LUX costs £615. The Enphase IQ EV Charger 2 costs £779. Both are tethered, 7.4 kW, single-phase, and both divert solar surplus to your car. The £164 gap is not the full story — install costs, grant eligibility and ecosystem lock-in widen it considerably.

• Indra Smart LUX — £615, OZEV-approved, broad tariff support, solar diversion via CT clamp, 78 mm slim. The generalist with solar chops.
• Enphase IQ EV Charger 2 — £779, not confirmed OZEV-approved, granular 1A solar chase from 1.38 kW surplus, but built to serve an Enphase-only household.

Install cost turns a gap into a gulf

The Indra's built-in SPD and PEN fault detection typically save £150 or more on the electrician's bill. Its quoted install range is £300–£500. The Enphase quotes £900–£1,300 — partly because it expects an Enphase IQ Gateway on site for full functionality, and partly because fewer UK installers stock it.

Add the units themselves and you are looking at roughly £915–£1,115 all-in for the Indra versus £1,679–£2,079 for the Enphase. That is a gap of £564–£964 before grants. And the grant question matters: the Indra is OZEV-approved, so eligible renters and flat owners can take £500 off. The Enphase's OZEV status is unconfirmed — if the grant does not apply, the total cost difference grows further still.

Solar diversion: ecosystem precision vs open compatibility

The Enphase does one thing superbly well. Paired with Enphase microinverters and an IQ Battery, it chases solar surplus in 1A increments, reacting roughly every 30 seconds, and can begin diverting from as little as 1.38 kW of excess generation. The AI-led source selection — choosing between panels, battery and grid — runs through a single app. For a household already deep in the Enphase stack, this is tidy engineering.

The Indra's solar diversion works via an included CT clamp and does not care which inverter brand sits on your roof. It is less granular — you will not get 1A stepping or sub-30-second reaction times — but it covers the core job: send spare solar to the car rather than export it at 4p/kWh. And because the Indra claims integration with over 1,000 UK tariffs, it also handles time-of-use scheduling. Pair it with Octopus Agile and it chases half-hourly rates. The Enphase has no direct API integration with Agile, Intelligent Go, or any other half-hourly UK tariff — a significant blind spot for anyone who wants both solar diversion and smart-tariff optimisation.

If you run a mixed-brand solar system — SolarEdge, GivEnergy, or anything non-Enphase — the Enphase charger loses its single-app advantage entirely and becomes a £779 box with no tariff smarts. At that point, the Zappi GLO at £750 does solar diversion better, or the Ohme Home Pro at £535 does tariff work better, or the Indra does both adequately for £615.

Build, protection and the physical details

The Indra is 78 mm deep — the thinnest tethered smart charger on the UK market — and weighs 3.6 kg. Its IP67 rating means it can survive brief submersion; the IK10 impact rating matches the Enphase. If your charger lives on a narrow side wall or faces a tight driveway, the Indra's profile is a practical advantage.

The Enphase is larger at 370 × 250 × 118 mm and weighs 11 kg. It carries IP55 — splash-proof, not submersible — though its operating range of −40°C to +55°C is broader than anything a British winter will test. Its 7.5-metre cable is 1.5 metres longer than the Indra's base model, though Indra offers a 10-metre version for a premium.

Warranty: five years from Enphase, three from Indra (extendable to five for £100). The Enphase wins on paper; the Indra's extension narrows it for a modest outlay.

The verdict

Buy the Indra Smart LUX if:

• You want solar diversion and smart-tariff scheduling in one charger without ecosystem lock-in
• You are OZEV-eligible and want the confirmed £500 grant — the Enphase cannot guarantee it
• Slim wall profile, lower install costs and a UK-manufactured unit matter to you

Buy the Enphase IQ EV Charger 2 if:

• You already run Enphase microinverters and an IQ Battery, and want single-app control of panels, storage and car
• Granular 1A solar chase from 1.38 kW surplus is worth paying for
• You value the five-year warranty without an extension fee

For most buyers — including most solar households — the Indra Smart LUX is the sounder purchase. It costs £164 less, installs for hundreds less, qualifies for the OZEV grant, and talks to your tariff. The Enphase earns its keep only inside a full Enphase energy system. Outside that ecosystem, it is an expensive charger that cannot schedule around your electricity rate. The Indra can.