Residential EV Chargepoints: Minimum Technical Specification (UK – OZEV)
This article provides a clear, installer- and manufacturer-focused summary of the minimum technical specification for residential electric vehicle (EV) chargepoints that must be met for eligibility under UK OZEV grant schemes. It is written for product managers, compliance teams, EV charger manufacturers, authorised installers, and residential developers.
1. Scope and applicable grant schemes
Residential chargepoints must comply with this specification to qualify for the following OZEV grants:
- EV chargepoint grant for flat owner-occupiers and renters
- EV chargepoint grant for residential landlords
- EV infrastructure grant for residential car parks
- EV chargepoint grant for households with on-street parking
There is a separate and more demanding specification for commercial chargepoints. Manufacturers must register residential models independently with OZEV.
2. Permitted charging outlet configurations
| Outlet type | Electrical rating | Power range | Status |
|---|---|---|---|
| Standard AC | 230 Vac ±10% (single-phase) | > 3.5 kW to ≤ 7 kW | Permitted |
| Fast AC | 230 Vac ±10% (1-phase) or 400 Vac ±10% (3-phase) | > 7 kW to ≤ 23 kW | Permitted |
| Fast DC | DC output | > 3.5 kW to ≤ 22 kW | Permitted |
Outlet configurations not permitted
- Not permitted Slow AC (< 3.5 kW)
- Not permitted Semi-rapid AC (23–43 kW)
- Not permitted Rapid AC (43–44 kW)
- Not permitted Semi-rapid DC (22–50 kW)
- Not permitted Rapid / ultra-rapid DC (> 50 kW)
3. Charging equipment compliance requirements
Residential charging equipment must be compliant with all of the following:
- BS EN 61851-1:2019 (EV conductive charging systems)
- Electromagnetic Compatibility Regulations 2016
- Electrical Equipment (Safety) Regulations 2016
- BS 8300-1:2018 (inclusive design and accessibility)
- IET Wiring Regulations BS 7671:2018 + A1:2020
- IET Code of Practice for EV Charging Equipment Installation
- Electricity Safety, Quality and Continuity Regulations 2002
Design and marking requirements
- Must be CE-marked or UKCA-marked
- Must clearly display precautions for users with active implantable medical devices
- Status indication via LEDs, lights, or display is mandatory
- If multiple outlets exist, power classification is based on all outlets operating simultaneously
4. AC and DC charging-specific rules
AC charging equipment
- Measured at nominal 230 Vac (single-phase) or 400 Vac (three-phase)
- Must use BS EN 62196 Mode 3 charging
- Socket outlets (where present) must be Type 2
DC charging equipment
- Must comply with BS EN 61851-23:2014
- Must use BS EN 62196 Mode 4 charging
Vehicle-to-X (V2X) capability
- ≤ 16 A per phase: ENA Engineering Recommendation G98
- > 16 A per phase: ENA Engineering Recommendation G99
5. Explicit exclusions
The following charging modes are not eligible for residential OZEV grants:
- BS EN 62196 Mode 1 charging
- BS EN 62196 Mode 2 charging
6. Smart charging and cybersecurity
All residential chargepoints must comply with:
- The Electric Vehicles (Smart Charge Points) Regulations 2021
- Mandatory smart functionality (load management, scheduling, interoperability)
- Cybersecurity requirements aligned with ETSI EN 303 645
7. Servicing, maintenance, and warranty
- Minimum 3-year on-site warranty covering parts and installation
- Warranty must be supplied with the chargepoint at installation
- Applies equally to manufacturer-supplied and installer-supplied units
8. Practical implications for manufacturers and installers
- Manufacturers: Ensure each residential SKU is registered with OZEV and mapped precisely to this specification.
- Installers: Installing a non-compliant unit invalidates grant eligibility and may expose you to audit failure.
- Developers / landlords: Power level, smart capability, and accessibility must be confirmed before procurement.
