myenergi Zappi EV Charger Installation in Cornwall

The Zappi's defining feature is its three operating modes. Fast mode charges your EV at the maximum available rate (7.4kW or 22kW) using grid electricity — exactly like any conventional EV charger. Use this when you need a fast turnaround. Eco mode prioritises solar generation but tops up from the grid as needed to maintain a minimum charging speed (typically 1.4kW). It charges your EV as quickly as your solar generation allows, plus a small grid top-up. Eco+ mode is the purist's choice: it charges only from genuine solar surplus, pausing whenever cloud cover reduces generation below the minimum threshold. Eco+ delivers 100%-renewable EV charging at zero marginal cost.

For Cornish households with 5kW+ of solar PV, Eco+ mode typically delivers 60–80% of annual EV miles entirely from solar — worth £400–£800/year in fuel savings versus grid-only charging. CCS configures the optimal default mode based on your usage pattern during commissioning.

Octopus Intelligent Go is the UK's most popular smart EV tariff, offering 7p/kWh between 23:30 and 05:30 plus dynamically extended cheap windows when grid demand is low. The Zappi v2.1 integrates natively with Octopus Intelligent Go via the Hub gateway and Octopus's API, automatically scheduling overnight charging during the cheap window without homeowner intervention. Combined with daytime solar charging in Eco+ mode, this typically reduces EV running costs to under 2p per mile — roughly 1/8th the cost of petrol at current Cornish forecourt prices.

For households on Octopus Cosy or Flux instead of Intelligent Go, the Zappi schedules charging around the cheapest tariff windows automatically. CCS sets up the integration during commissioning.

myenergi designs and manufactures the Zappi at its purpose-built factory in Stamford, Lincolnshire. Every unit is made in the UK from largely UK-sourced components, supporting British manufacturing and providing genuinely fast warranty turnaround (typically 48-hour replacement for warranty defects from myenergi's Stamford warehouse). For Cornish customers who value British-made products and short supply chains, the Zappi is the obvious choice.

The UK manufacturing also means myenergi can offer British technical support during UK business hours from a Lincolnshire-based team — a meaningful advantage over imported alternatives where support routes via European or Asian call centres.

Tethered Zappi units come with a fixed 5m or 6.5m Type 2 cable permanently attached. Pros: convenient (just plug in), cable can't be stolen, slightly cheaper. Cons: cable is exposed to weather, no flexibility for cable length. Untethered Zappi units have a Type 2 socket; you bring your own cable (which comes with the EV) and store it in the boot when not charging. Pros: cable protected indoors, easy to upgrade cable, looks tidier. Cons: extra step every charging session, cable can theoretically be stolen if left attached.

For most Cornish households we recommend tethered — the convenience outweighs the small aesthetic compromise, and the 6.5m cable reaches comfortably across most driveways. For homes with multiple EVs or where the charger is mounted at the boundary of the property, untethered is often better.

EV charger installations in Cornwall require careful design around several factors: distance from consumer unit (long cable runs are common in Cornish properties with detached garages), supply capacity (60A single-phase service is common in older rural properties — limiting how many heat pumps + EV chargers can run simultaneously), DNO notification (G99 application required for installations exceeding 16A per phase, which all 22kW three-phase Zappis trigger), and outdoor mounting in coastal salt-spray environments (the Zappi is IP65 rated for unsheltered outdoor installation in Cornish coastal conditions).

CCS handles the entire process: site survey, supply capacity check, optimal mounting location, cable routing, consumer unit modifications, RCBO/Type-A RCD addition (required by 18th Edition wiring regs for EV circuits), commissioning, and DNO notification where required. See our EV charger installation page for the full process.

Typical fully installed pricing (May 2026):

• Zappi v2.1 7kW Untethered — from £999
• Zappi v2.1 7kW Tethered (5m) — from £1,250
• Zappi v2.1 7kW Tethered (6.5m) — from £1,295
• Zappi v2.1 22kW Three-phase Tethered — from £1,650
• Zappi + Hub + Eddi solar diverter bundle — from £1,895

All prices include 0% VAT (where eligible — most domestic installs qualify), Type-A RCD/RCBO consumer unit modification, up to 10m of armoured cable, mounting, commissioning, app setup, and DNO notification where required. Long cable runs over 10m or three-phase supply upgrades incur extra cost — quoted at survey. See our EV charger page for the full process.