Ohme vs Zappi: Which EV Charger Is Right for You?
Two of the UK's most popular home EV chargers compared side by side. We install both — here's our honest, hands-on assessment after fitting hundreds across Devon.
Solutions Ltd
Honest Comparison from Approved Installers
The Ohme and Zappi are both excellent home EV chargers, but they serve different use cases. The Ohme excels at smart tariff integration — it communicates directly with energy providers like Octopus Energy to charge your car at the cheapest rates automatically. The Zappi is the go-to charger for homes with solar panels, using built-in CT clamp monitoring to divert surplus generation into your vehicle.
Having installed both extensively across Devon, we've seen first-hand how each performs in real-world conditions. Here's our detailed comparison to help you decide.
Feature-by-Feature Comparison
| Feature | Ohme | Zappi |
|---|---|---|
| Price (installed) | £899–£1,200 | £1,200–£1,600 |
| Smart tariff integration | Yes — Intelligent Octopus, Agile | Yes — via myenergi app |
| Solar diversion | No built-in | Yes — built-in CT clamp |
| Charge speed (single phase) | Up to 7.4kW | Up to 7kW |
| App quality | Excellent — intuitive interface | Good — improving steadily |
| Cable length | Tethered 5m or 7.5m | Tethered 6.5m or untethered |
| OZEV grant eligible | Yes (select models) | Yes |
| Build quality | Good — compact design | Excellent — robust metal casing |
| Three-phase option | No | Yes — Zappi V2 22kW |
| Load management | Via app scheduling | Built-in eco/eco+ modes |
Choose Ohme If...
- You're on a smart tariff (Octopus Intelligent, Agile)
- Budget is a priority
- You want the best app experience
- You don't have solar panels
Choose Zappi If...
- You have solar panels or a battery
- You want built-in solar diversion
- You need a three-phase option
- Build quality is your top priority
Frequently Asked Questions
Which is better, Ohme or Zappi?
It depends on your setup. If you have solar panels and want to maximise self-consumption, the Zappi's built-in solar diversion is the clear winner. If you're on a smart tariff like Octopus Intelligent and want the cheapest overnight charging, the Ohme's seamless tariff integration is hard to beat. Both are excellent chargers — the right choice depends on your priorities.
Is the Ohme cheaper than the Zappi?
Yes. Fully installed, an Ohme typically costs £899–£1,200 compared to £1,200–£1,600 for a Zappi. The Ohme is one of the most cost-effective smart chargers on the market. However, if you have solar panels, the Zappi's energy savings through solar diversion can offset the higher upfront cost over 2-3 years.
Can you install both Ohme and Zappi in Devon?
Yes. We're approved installers for both brands and install them regularly across Newton Abbot, Exeter, Torquay, Plymouth, and all of Devon. We'll help you choose the right charger for your home, vehicle, and energy setup.
Do I need a consumer unit upgrade for an EV charger?
Not always, but many older consumer units lack a spare way or adequate capacity for a dedicated 32A EV circuit. We assess your existing board during our free survey and include any upgrade costs in your quote. A typical consumer unit upgrade adds £350–£500 to the installation.
EV Charger Installation Across Devon
We install Ohme and Zappi chargers in Newton Abbot, EV charger installation in Torquay, home chargers in Exeter, and EV charging points in Plymouth. Our approved installers also cover Paignton, Teignmouth, Dawlish, Totnes, Brixham, Ivybridge, Ashburton, Bovey Tracey, Kingsteignton, Chudleigh, Sidmouth, Exmouth, Honiton, and all surrounding areas.
EV Charger Installation Available Across Devon
Can't see your area? We cover all of Devon, Cornwall & Somerset. Contact us
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"Couldn't decide between Ohme and Zappi. Grants explained the differences clearly and recommended the Zappi for our solar setup. Brilliant installation."
Mark & Lisa P., Exeter – Zappi Installation
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All work completed to:
BS 7671 (18th Edition) • Part P Building Regulations • IET Wiring Regulations
EV charger installation available across Devon:
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