Zappi vs Hypervolt vs Ohme. Searching for an EV charger in Scotland? Let's see which one suits you best.

A guide for Scottish homeowners by the people that actually install your EV chargers.

EV chargers are an excellent investment that will pull more power, for longer, than almost anything else you own. Pick the right one, and you're looking at saving thousands by charging from your own solar and avoiding peak prices. Pick the wrong one, and you could be wondering why your bills aren't so cheap.

The three names we'll talk about here are the ones that come up most often: Myenergi Zappi v2.1, the Hypervolt Home 3 Pro, and the Ohme Home Pro. All three are great choices, but they're not the same. The right one for someone in Linlithgow may be completely different for someone in Stirling.

Here's how we decide which one goes best on your premises.

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The short version

Let's get into the details.

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Some facts that apply in Scotland first

Before you select your charger, here are some facts about Central Scotland that manufacturers may not have told you:

Our energy supplies can be tight. In our experience, local grids have limits. A 7 kW charger at home takes up to 32 A for sustained periods, which is why dynamic load management matters so much on older domestic premises.

Scottish weather can be relentless. Your enclosure should be rated at a minimum of IP65 to protect it from rain, hail, snow, and salt air if you are near the coast. The cable glands and drip loops must be taken seriously by your installer.

In Scotland, standard G98/G99 rules apply. Installations up to 3.68 kW per phase follow the simpler connection route under G98. Larger export arrangements will need approval or export limitation under G99-style arrangements.

Most Scottish driveways are awkward. Longer runs, gable walls, and cars parked three metres further away than the manual assumes. Cable length matters more here than some manuals admit.

Now let's talk about the contenders.

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The Myenergi Zappi v2.1 - A great pairing for your solar

Zappi is top when it comes to pulling energy from your solar and placing it into your EV before it leaks back to the grid for pennies. Here's why we'd fit it:

• ECO and ECO+ modes. ECO mode blends your surplus solar with some from the grid to keep your charging steady. In ECO+, priority is genuine surplus, and it pauses when there's not enough available.
• Battery awareness. In a solar + battery home, correct CT clamp setup is what decides whether the charger responds properly to true surplus rather than misreading the system.
• Three-phase option. The Zappi v2.1 range includes a 22 kW version for three-phase supplies.
• Built-in Wi-Fi. The current Zappi includes Wi-Fi as a standard feature.
• Screens and buttons on unit. Handy if you haven't got your phone on you.

Some points to know:

There's a minimum charge floor of about 1.4 kW in surplus-only mode. On cloudy days, the charger will pause constantly. It isn't broken; it's just refusing to cheat with expensive grid power so your miles stay 100% free.

CT clamp placement is everything. Your charger relies on this tiny sensor to know exactly where the electricity is coming from. If your installer clips it onto the wrong wire, the whole setup goes completely blind. Your app will spit out nonsense, or worse, your car might drain your expensive home battery instead of waiting on solar.

IP65 rated, and available tethered or untethered in 7 kW single-phase.

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The Hypervolt Home 3 Pro - A good all-rounder choice

While Zappi is a specialist, the Hypervolt is hard to fault as a general all-rounder. It's the safer option many homeowners tend to favour.

• Three different modes for solar. These include eco, super eco, and boost modes.
• Different cable length options. These come tethered in 5m, 7.5m, or 10m. The 10-metre works excellently on more difficult/longer driveways.
• Extremely well built. The Hypervolt Home 3 Pro has a rating of IP66 and IK10, giving it a very tough build compared to the others.
• Native Intelligent Go support. Intelligent Octopus Go and OVO Charge Anytime are supported by Hypervolt.
• Made in the UK with great customer support.

Things to know:

Tethered only. There are no socketed versions. Slightly pricier than Ohme, but you are getting a tougher overall box.

Best suited for people who want a great all-rounder with a long cable and good solar integration, especially if the car is parked a bit far from the house.

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The Ohme Home Pro - Works great with tariffs

Ohme is a great choice for people who don't have solar yet and drive a lot. These work brilliantly for cheap overnight miles in the UK.

Why it's a good fit:

• Integration with Intelligent Octopus Go. Ohme's official documentation states it integrates seamlessly with smart energy providers like Octopus and OVO.
• A screen on the unit. An LCD screen with physical buttons is included on the Home Pro.
• Exceptional value. This is one of the most affordable chargers out there, making it the perfect choice if you want to take advantage of cheap overnight energy tariffs rather than worrying about solar.
• Designed entirely around smart scheduling via the app.

Good points to know:

Not a proper solar charger. It might spot that your panels are making power, but it has no idea how to manage it. Want to run on solar? Look elsewhere.

Because these use an internal SIM card, you really need to check your mobile signal. If you have rubbish reception on your driveway, which is pretty common out towards rural Stirlingshire, you probably shouldn't buy one. It just becomes a very expensive wall plug if it can't get a signal.

Also, if you ever see the charger capping out at 16A instead of pulling the full 32A, don't panic. Usually when we see this it just means the CT clamp is playing up or you need to do a quick firmware update on your phone app.

Generally we suggest Ohme for people in flats, or anyone without solar who just wants to get the most out of the Intelligent Octopus Go tariff.

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Which one should you actually buy?

If you are still stuck on making a choice, here is how we normally break it down for our customers:

Looking to run your car from your own solar panels? Then the Zappi v2.1 is definitely the one you want to go for.

If you just want a really tough unit with a long cable that supports Intelligent Go natively, then the Hypervolt Home 3 Pro is the safest bet.

Don't care about solar and just want the cheapest possible night-rate charging? The Ohme Home Pro wins when it comes to price and tariff integration.

If you live in a tenement or your electrical supply is quite tight, both the Ohme and Hypervolt are great at handling load management.

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Scottish EV Grants (Read this before buying)

Scotland has its own rules for grants and to be honest they change a lot. So keep in mind these numbers are accurate as of April 2026. Make sure you actually click the official links to check the funding hasn't dried up before you make any plans.

OZEV Grant

The main one to look at is the OZEV grant. This actually went up to £500 per socket on 1 April 2026. There is a massive catch though. The scheme is now strictly for flats, people renting, residential landlords, or homes that have to use on-street parking. If you own a house with a private driveway, you don't qualify anymore.

The way you apply for the money has also completely changed. Installers aren't allowed to deal with the paperwork for you now. You have to go onto the GOV.UK site and do it yourself.

• Use the household application if you are in a flat.
• Or use the landlord application if you own the building.

Once they approve it, they give you a digital form that you hand over to us so we can claim the grant money.

Scottish-specific funding

When it comes to specific Scottish funding, the Energy Saving Trust's domestic pot is currently closed. But Home Energy Scotland is actively asking people to register their interest for future funding. It is worth putting your name on that list.

Also Transport Scotland recently announced a £17.8m package for 2026/27. This is mostly aimed at lower-income homes, rural communities, and properties without off-street parking.

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The hardware is only half the battle

Nobody really mentions this, but buying the box on the wall is only about 60% of the job. The remaining 40% comes down to whoever is fitting it. Things like checking the main fuse, routing the cable properly, putting the CT clamp in exactly the right place, and knowing how it all actually speaks to your solar panels and home battery.

That's why we stay independent and aren't tied to one specific brand. We come out, look at your incoming supply, check where you park, look at your current energy tariff, and then tell you straight up which charger actually makes sense for your house.