The Zappi and the Ohme Home Pro are the two most-asked-about smart EV chargers in the UK. They are aimed at slightly different households — but the marketing for both makes them sound interchangeable, which has confused a lot of buyers.
This guide does the head-to-head: spec by spec, feature by feature, and ends with a clear recommendation for each type of UK driver.
At a glance — Zappi vs Ohme
| Feature | myenergi Zappi v2.1 | Ohme Home Pro |
|---|---|---|
| Power | 7 kW (single-phase) / 22 kW (three-phase) | 7 kW |
| Connector | Tethered or untethered | Tethered (Type 2) |
| Cable length | 6.5m or 8m (tethered) | 5m or 8m |
| Solar diversion | Yes (true CT-clamp diversion) | No (workaround via tariff) |
| Octopus Intelligent Go | Compatible, via app scheduling | Native integration |
| OVO Charge Anytime | Compatible | Not compatible |
| App quality | Powerful, less intuitive | Polished, car-aware |
| Built-in screen | Yes (LCD) | Yes (LCD) |
| Earth protection | Built-in PEN fault | Built-in PEN fault |
| Warranty | 3 years | 3 years |
| OZEV grant eligible | Yes | Yes |
| Made in | UK (Stafford) | UK (London) |
Price and value
The Zappi carries a clear premium over the Ohme. For current pricing on both, see the myenergi range and the Ohme range.
The Zappi justifies the premium in three ways:
1. Solar diversion hardware. The Zappi includes the CT clamps and electronics to measure your home's actual energy flow and divert surplus solar into the EV. The Ohme cannot do this.
2. Three-phase capability. The Zappi is available in a 22kW three-phase version for properties with a three-phase supply. The Ohme is single-phase only.
3. Bigger ecosystem. myenergi makes a hot-water diverter (Eddi) and a battery system (Libbi) that all talk to each other via the myenergi Hub. If you want a connected home energy system, the Zappi is the entry point.
The Ohme wins on price-per-feature for households without solar. It is one of the cheapest fully-featured smart chargers on the UK market — and the price is even more attractive after the £350 OZEV grant if you qualify.
Solar integration
This is the single biggest difference between the two chargers, and the deciding factor for many buyers.
Zappi: true solar diversion
The Zappi uses a current transformer (CT) clamp on your incoming mains supply to monitor real-time energy flow. When your solar panels are generating more than the rest of the house is using, the Zappi diverts the surplus into your EV's battery — for free.
It has three modes:
• Fast: charges from the grid at full 7kW, ignoring solar (useful for emergency top-ups)
• Eco: mixes solar surplus with grid electricity to maintain a minimum charge rate
• Eco+: charges only from solar surplus — pause when there is none, resume when the sun comes back
For a typical UK home with a 4 kW PV system, Eco+ mode can add 2,000–2,500 free miles per year to an EV. That is potentially £200–£400 of saved electricity costs annually.
Ohme: indirect solar via tariff
The Ohme Home Pro does not have a CT clamp. It cannot measure your solar generation directly. What it can do is shift charging to times when grid electricity is cheap, via its price-following feature. On certain solar export tariffs this loosely correlates with daylight hours — but it is not the same as charging from your own panels for free.
If solar diversion matters to you, the Ohme is not the right charger. Get a Zappi.
Smart tariff support
Almost the mirror image of the solar story — with one important catch for OVO customers.
Ohme: native Octopus Intelligent Go
The Ohme Home Pro talks directly to Octopus Intelligent Go. When you set a charging schedule in the Ohme app, it automatically requests "smart sessions" from Octopus, which extends the cheap-rate window to whenever your EV is actually charging. This typically saves a few extra hours per week of cheap-rate charging compared to a manually scheduled charger.
The Ohme is not on OVO's Charge Anytime compatible list. If you are an OVO customer, or think you might switch to OVO, the Ohme is the wrong choice — browse the chargers OVO does support instead. The Ohme does work with most other UK EV tariffs through its own scheduling.
Zappi: compatible with both
The Zappi appears on both the Octopus and the OVO compatible charger lists, which is unusual — most chargers manage one or the other. It does not have the native Intelligent Go integration the Ohme has, so on Octopus you set a Boost Timer for the off-peak window rather than letting Octopus negotiate the schedule. On OVO Charge Anytime it is fully supported, provided the firmware is up to date and the CT clamp is fitted the right way round.
For Octopus customers without solar, the Ohme is meaningfully better. For OVO customers, the Zappi is the one that actually works.
App and user experience
Both apps do the basics — start, stop, schedule, see history. But they are aimed at different users.
The Ohme app is car-first. When you set it up it asks for the make, model and battery size of your EV. It then expresses everything in miles of range (rather than kWh), shows a target charge state ("ready by 7am at 80%") and uses your specific car's charging curve to plan sessions. It is one of the most polished apps in the EV charger market.
The myenergi app is house-first. It assumes you may have multiple myenergi devices — Zappi for the car, Eddi for hot water, Libbi for battery storage — and gives you a single dashboard for the whole home. This is powerful, but for a household with just an EV and no solar, it is more complexity than necessary.
Hardware, build and install
Both are British-made: the Zappi at myenergi's Stafford factory, the Ohme at its London facility. Both are rated for outdoor use and have integrated PEN fault detection (no separate earth rod required during installation, which saves your installer 30 minutes and you typically £80–£150).
The Zappi is bigger — roughly 25% taller and noticeably heavier on the wall. The Ohme is more compact and visually cleaner, with the cable hanging neatly into a built-in holster.
The Ohme Home Pro is tethered only; the Zappi is available tethered or untethered. See our guide to tethered vs untethered chargers for which to choose.
Which one should you buy?
Six common scenarios and the right pick for each:
| Your situation | Best pick | Why |
|---|---|---|
| Solar PV on the roof | Zappi | Solar diversion saves £200–£400/year |
| Octopus Intelligent Go customer | Ohme Home Pro | Native integration, dynamic cheap-rate windows |
| OVO Charge Anytime customer | Zappi | Ohme is not on OVO's compatible list |
| Tight budget, OZEV grant eligible | Ohme Home Pro | Lowest net cost after the grant |
| Three-phase property | Zappi 22kW | Ohme is single-phase only |
| Multi-myenergi home (Eddi, Libbi) | Zappi | Single ecosystem, single app |
| Two EVs in a single household | Easee One (third option) | Best dynamic load-balancing of any UK charger — but not on either tariff list |
Common questions
Is the Ohme Home Pro better than the Zappi for a Tesla?
For most UK Tesla owners on Octopus, yes — Tesla cars are directly compatible with Octopus Intelligent Go through the Tesla app, and pairing that with a tariff-integrated charger like the Ohme gives you the smoothest experience. See our full best home charger for Tesla UK guide for the wider lineup.
Does the Ohme work with OVO Charge Anytime?
No. Ohme chargers do not appear on OVO's published Charge Anytime compatibility list. OVO customers should choose from the chargers OVO supports, which include the Zappi, the Indra Smart PRO and LUX, and the Andersen range.
Can I use the Zappi and Ohme together?
You would not normally install both. If you have two EVs and one driveway, the better option is a single charger with dynamic load balancing — the Easee One does this best, though note it is not supported by either smart tariff.
Does the Zappi work without solar?
Yes — its Fast mode is a normal smart charger. But you are paying a premium for solar features you will not use, unless you need it for OVO compatibility.
Are both chargers OZEV approved?
Yes. Both qualify for the up-to-£350 grant if you are eligible. See our OZEV grants guide for full eligibility.
Which has better customer support in the UK?
Both have UK-based support teams. myenergi has a slight edge in long-term track record (founded 2016), Ohme is newer but ramping fast.
Decision time
If you have solar or you are with OVO, browse the myenergi Zappi range. If you are heading to Octopus Intelligent Go, go to the Ohme range. Both are in stock, both ship free, and both are OZEV-grant eligible.
Still not sure? Use our Find My Charger tool to filter by tariff and budget, or call 0330 043 8012 for a recommendation tailored to your home.