Simpson & Partners Home 7 vs Enphase IQ EV Charger 2: Solar ecosystem or standalone build quality?

The £130 that buys you an ecosystem — or nothing at all

The Simpson & Partners Home 7 costs £649. The Enphase IQ EV Charger 2 costs £779 — £130 more. Whether that £130 buys you something depends on a single question: do you already have Enphase solar and an IQ Battery on your roof?

If you do, the Enphase charger slots into a single-app energy system that manages panels, battery and car together. If you don't, it is an overpriced 7.4kW charger with no confirmed OZEV approval and no meaningful tariff integration. The Simpson & Partners, meanwhile, asks less, delivers a decade-long enclosure warranty, and works with the tariffs most UK EV owners actually use.

• Simpson & Partners Home 7 — £649, UK-built, OZEV-approved, 10-year enclosure warranty, smart-tariff scheduling, tethered or untethered.
• Enphase IQ EV Charger 2 — £779, 7.5-metre cable, solar-surplus charging from 1.38kW, but only fully realised inside a complete Enphase system.

The Enphase only works as a system component

Strip away the Enphase ecosystem and what remains is a 7.4kW tethered charger at £779. That is more than the Hypervolt Home 3 Pro at £690, more than the myenergi Zappi GLO at £750 — both of which are OZEV-approved and integrate with UK smart tariffs. The Enphase has no direct API link to Octopus Intelligent Go, Octopus Agile, or any other half-hourly tariff. Its scheduling lives inside the Enphase App, which is designed to orchestrate microinverters and IQ Batteries, not chase grid prices.

What it does well — and this matters — is solar-surplus charging from as little as 1.38kW of excess PV, adjusting in 1A increments every 30 seconds. That is finer-grained than most competitors. But the Zappi GLO does the same job with broader installer support, OZEV eligibility, and a three-phase option for those who need it. For anyone comparing the two on solar grounds alone, the solar charger guide lays the field out more fully.

The Enphase also carries an unconfirmed OZEV status. That is not a minor footnote — it means grant-eligible buyers (renters, flat owners) cannot rely on the £500 discount. The Simpson & Partners Home 7 is OZEV-approved. After the grant, it drops from £649 to £149 plus install. The Enphase, at full price, sits at £779 plus an install that typically runs £900–£1,300 because of the IQ Gateway requirement. The total outlay gap can be substantial.

Simpson & Partners Home 7: the quiet case for build and warranty

The Simpson & Partners is manufactured in the UK from anodised aluminium. It comes in finishes — Accoya wood, Cotswolds Green — that suggest it is aimed at buyers who would otherwise look at the Andersen A3, but at £649 rather than £995. The 10-year enclosure warranty is the longest on the UK market, though the internal electronics get three years only. That split matters: the housing will outlast the motherboard's cover.

Smart-tariff scheduling supports Octopus Go, OVO Charge Anytime, and EDF GoElectric. It is not as sophisticated as the Ohme Home Pro's half-hourly optimisation — if tariff intelligence is the priority, the Ohme vs Simpson & Partners comparison is worth a look — but it handles fixed off-peak windows competently. The app is functional, not polished. It does what it needs to.

The caveat is installer coverage. Simpson & Partners has a smaller network than Ohme, myenergi, or Hypervolt. Check availability in your area before committing. A charger you cannot get fitted locally is not a bargain at any price.

Three-phase and cable length

The Simpson & Partners offers a 22kW three-phase option — unusual at £649. Fewer than 5% of UK homes have three-phase supply, but for those that do, it is worth noting that the Enphase is locked to single-phase 7.4kW in the UK. The Simpson & Partners' tethered cable is 5 metres; the Enphase's is 7.5 metres. If your parking spot is far from the consumer unit, that extra 2.5 metres may save you a cable run — one of the few areas where the Enphase's hardware spec argues for itself regardless of ecosystem.

The verdict

Buy the Simpson & Partners Home 7 if:

• You want a well-built, UK-manufactured charger with the longest enclosure warranty on the market
• You are OZEV-eligible and want the £500 grant — the Simpson & Partners qualifies, the Enphase does not (confirmed)
• You use a fixed off-peak tariff like Octopus Go or EDF GoElectric and need reliable scheduled charging

Buy the Enphase IQ EV Charger 2 if:

• You already have Enphase microinverters and an IQ Battery and want single-app control over your entire energy system
• You value the 7.5-metre cable and fine-grained 1A solar-surplus tracking
• You do not need OZEV grant eligibility or half-hourly UK tariff integration

For most buyers — which is to say, anyone without an existing Enphase solar system — the Simpson & Partners Home 7 is the better charger at the better price. It costs £130 less, qualifies for the grant, and does the core job of charging a car on cheap overnight electricity without fuss. The Enphase is a good product in a narrow context. Outside that context, the maths do not work.