Easee One vs CTEK Chargestorm Connected 3

A £597 gap that mostly comes down to your electricity supply

These two chargers are not competitors in any normal sense. The Easee One costs £489, weighs 1.5 kg, and does one thing well: deliver 7.4kW to a single-phase home with the least possible install fuss. The CTEK Chargestorm Connected 3 costs £1,086, weighs up to 24 kg, and is built for three-phase premises that want commercial-grade metering and open protocols. The £597 between them is not a premium for polish — it is the price of hardware most UK homes cannot use.

• Easee One — £489. Lightweight, single-phase, built-in RCD and eSIM. The install-cost argument.
• CTEK Chargestorm Connected 3 — £1,086. Three-phase 22kW native, MID-approved meter, OCPP 2.0.1. The three-phase argument.

The single-phase question — and why it settles most decisions

Fewer than 5% of UK homes have a three-phase supply. If yours is single-phase, the CTEK delivers 7.4kW — the same output as the Easee One, the Tesla Wall Connector, or the Ohme Home Pro. You would be paying £1,086 for a 22kW-capable charger permanently throttled to a third of its capacity, plus install costs of £900–£1,300 versus the Easee's typical £400–£600. The arithmetic is unkind.

The Easee One's integrated Type B RCD and open-PEN detection usually knock £100–£200 off the electrician's bill. The CTEK also has a built-in MRCD Type B — so both avoid the external RCD board — but the CTEK's weight (up to 24 kg) and three-phase wiring mean the install is a different job entirely.

When the CTEK earns its price

If you do have three-phase power — or you are upgrading to it for a heat pump, workshop, or fast EV charging — the CTEK becomes a different proposition. At 22kW on three-phase 32A, it will add roughly 120 miles of range per hour, compared with about 30 miles at 7.4kW. That matters if you drive high mileage, share a charger between vehicles, or simply want the car ready faster.

The MID-approved, Eichrecht-compliant energy meter is unusual in a home charger. It is the sort of thing a landlord or fleet manager needs for accurate cost recovery. The OCPP 2.0.1 and ISO 15118 support mean the unit is not locked to any vendor back-end — useful if you want to run it through Monta or a similar platform, or if you plan to claim workplace charging expenses.

The five-year warranty is two years longer than the Easee's three. On a £1,086 unit, that matters more than it sounds.

For a three-phase comparison with a lighter, cheaper alternative, the Zaptec Go 2 at £638 is the obvious rival — and is covered in the Zaptec Go 2 vs CTEK Chargestorm Connected 3 comparison.

Smart tariffs: neither charger's strong suit

The Easee One offers scheduled charging through its app, but has no direct tariff API — no Octopus Intelligent Go integration, no half-hourly rate chasing. You set a timer; it follows it. Fine on a fixed off-peak window like Octopus Go at 8.5p/kWh from 00:30–05:30, but it leaves money on the table on variable tariffs like Octopus Agile.

The CTEK is no better here. It relies on third-party OCPP apps for scheduling and has no first-party Octopus or OVO integration. If smart-tariff optimisation is the priority, neither of these is the right charger. The Ohme Home Pro at £539 — just £50 more than the Easee — has native tariff APIs that earn back the difference within weeks on a variable rate. That comparison is covered in detail on the Ohme Home Pro vs Easee One page.

The verdict

Buy the Easee One if:

• Your home is single-phase — which almost certainly means yours
• You want the lowest total cost of hardware plus install
• You value a small, light unit with lifetime 4G built in

Buy the CTEK Chargestorm Connected 3 if:

• You have or are getting a three-phase supply and want 22kW charging
• You need MID-approved metering for cost recovery or expense claims
• You prefer open protocols (OCPP 2.0.1, ISO 15118) over a vendor-locked app

For the typical UK homeowner on a single-phase supply, the Easee One is the clear pick. It costs £597 less, installs faster, and charges at the same speed. The CTEK is a fine piece of engineering aimed at a narrow audience — three-phase homes that need commercial-grade features on a residential wall. If that is you, it deserves a look. If it is not, the decision was over before it started.