EV Charger Smart Charging Regulations 2022 Explained

Summary

The Electric Vehicles (Smart Charge Points) Regulations 2021 are a piece of secondary legislation made under the Automated and Electric Vehicles Act 2018, and they're the reason virtually every domestic EV charger sold in Great Britain since mid-2022 ships with an app, a network connection (Wi-Fi, 4G or Bluetooth-to-app), and a default charging schedule baked in. Existing Squotipedia coverage of EV chargers — ev charger, domestic ev charger installation process and ev charger faults — mentions the smart charging mandate in passing as part of a wider installation or fault-finding picture. This article is the deep dive: what the regulations actually require at a technical level, and what an installer needs to configure and verify at commissioning rather than just tick as "smart-capable, box ticked."

The regulations exist because uncontrolled EV charging is a grid-stability problem, not just a consumer feature. If large numbers of EV owners plug in the moment they get home from work — typically a sharp early-evening peak — and all start drawing 7kW simultaneously, that's a meaningful, geographically clustered load spike on local distribution networks at exactly the time domestic demand is already highest. The regulations tackle this two ways: by nudging behaviour towards off-peak charging by default, and by preventing every smart chargepoint on a street from switching on in the same instant even when they're all following the same off-peak schedule — which is what the randomised delay function is for. It's worth being precise about scope, because installers get asked "does my customer's charger have to do this" often: the regulations apply to chargepoints sold for private domestic and workplace use with restricted access; there are exemptions for specific categories including some fleet and non-publicly-accessible workplace chargers, and for public chargepoints which are covered by separate legislation (the Public Charge Point Regulations 2023). the precise current exemption boundaries before advising a commercial fleet customer on compliance, as this is an area where scope has been refined since the original 2021 instrument.

Key Facts

• Statutory instrument — The Electric Vehicles (Smart Charge Points) Regulations 2021, SI 2021/1467, made under the Automated and Electric Vehicles Act 2018
• In force date — 30 June 2022 for the core smart functionality requirements; a second phase of enhanced cybersecurity requirements followed on 30 December 2022
• Scope — applies to relevant chargepoints sold or leased in Great Britain for domestic and workplace private use
• "Smart" definition — a chargepoint capable of sending and receiving information, and of adjusting the rate/timing of electricity flow in response to signals it receives
• Default off-peak period — units must ship with a preset default schedule that avoids charging during defined peak hours; the commonly used default avoids 8am–11am and 4pm–10pm, reflecting typical morning and evening demand peaks, but the regulations don't fix a single statutory window — manufacturers configure the exact default schedule within the regulatory framework, so confirm the specific unit's default against its documentation rather than assuming these exact hours
• Randomised delay (demand-side response) — when a scheduled event or a demand-side response action triggers charging, the unit must apply a random delay of up to 10 minutes before starting, to prevent simultaneous switch-on across many units on the same part of the network; the regulations allow this randomisation window to be configured longer (up to 30 minutes) specifically for units actively participating in a demand-side response service, but 10 minutes is the baseline figure that applies to ordinary scheduled charging
• User override / boost function — the regulations require that a user can override the default schedule and delay for an immediate top-up when they need one, without needing to alter the underlying default settings permanently
• No forced discharge without consent — a chargepoint must not be capable of overriding the randomised delay or bypassing demand-side response settings in a way that removes user control without the user's active choice; the customer must actively opt in to change these behaviours
• Interoperability — a smart chargepoint must be able to communicate with, and be worked on by, more than one energy supplier/service, so a customer isn't tied to a single proprietary demand-response scheme
• Off-line functionality — a unit must continue to function (i.e. still charge, even if not on its "smart" schedule) if network/app connectivity is lost, rather than fail to charge at all
• Cybersecurity baseline — chargepoints must meet cybersecurity requirements intended to prevent unauthorised access to smart functions, including protection against harm or disruption to the electricity system, to the chargepoint itself, and to the owner's/end-user's personal data; software must support secure over-the-air updates with authenticity/integrity checks. These requirements align with the consumer IoT security baseline set out in ETSI EN 303 645, and came into force in the regulations' second phase from 30 December 2022
• Fleet/workplace exemption — chargepoints that are not accessible to the public and are provided as part of a fleet or workplace arrangement may fall under different or reduced requirements; the exact exemption criteria are set out in the regulations themselves, so check the specific arrangement (fleet ownership, restricted access, number of employees) against the current text rather than assuming a workplace installation is automatically exempt
• Enforcement body — the Office for Product Safety and Standards (OPSS) is the enforcement authority for the regulations
• Not the same as OZEV grant rules — smart charging compliance under SI 2021/1467 is a product/point-of-sale requirement, separate from EV chargepoint grant eligibility rules (e.g. former OZEV/now OZEV-successor grant schemes) — a unit can be smart-compliant without being grant-eligible and vice versa
• Existing wiring/commissioning standards still apply — the smart charging regulations sit alongside, not instead of, BS 7671 Section 722 circuit requirements, PME open-PEN detection, and DNO notification (G98/G99/G100) — see ev charger faults and domestic ev charger installation process for those

Quick Reference Table

Detailed Guidance

What "smart-capable" actually requires at the point of sale

Since 30 June 2022, it has not been lawful to sell or lease a new domestic or workplace-private chargepoint into the GB market unless it meets the smart functionality requirements in SI 2021/1467. This is a product compliance obligation that sits primarily with the manufacturer/importer/retailer, not the installer — but installers are the ones who commission the unit, set it up on the customer's Wi-Fi, and walk the customer through the app, so in practice the installer is the person who determines whether the smart functionality is actually configured and working on day one, even though they didn't design the product. A unit can be technically compliant out of the box and still be commissioned badly — for example if an installer disables the default schedule "because the customer asked for it to just charge whenever" without explaining what they're switching off, or fails to update firmware so the unit isn't running the version with the compliant default behaviour.

The randomised delay function, explained properly

This is the part of the regulations installers and customers understand least, and it's worth explaining clearly because customers often think their charger is faulty when it doesn't start exactly on the hour. When a chargepoint is set to begin charging at a scheduled off-peak start time (say 00:30), the regulations require it to apply a random delay of up to 10 minutes before actually beginning to draw current — a longer randomisation window (up to 30 minutes) can be used specifically where the unit is actively participating in a demand-side response service, but 10 minutes is the figure that applies to ordinary default-schedule charging. This is deliberate: if every smart chargepoint on a street, all running the same tariff-driven off-peak schedule, switched on at exactly the same second, the network would see a sharp synchronised load spike at that instant instead of a smoothed ramp — defeating much of the purpose of off-peak charging in the first place. The customer's charger starting at 00:37 instead of 00:30 is normal, compliant behaviour, not a fault.

Boost function and user control

The regulations are explicit that "smart" must not mean "the user loses control." A customer who plugs in at 6pm and needs a full charge by 7am for an early departure must be able to override the default off-peak schedule and randomised delay and start charging immediately — this is generally implemented as a "boost" or "charge now" button in the manufacturer's app or on the unit itself. Equally, a chargepoint must not be able to silently disable or override the randomised delay/demand-response defaults on its own initiative — any change to that default behaviour has to be something the user actively chooses (opts into), not a manufacturer-set convenience default that quietly removes the grid-protection function. Installers should demonstrate the boost function to every customer at handover — it's the single most common "how do I make it charge now" support call a chargepoint installer gets.

Cybersecurity and what it means for commissioning

A network-connected chargepoint is an internet-of-things device sitting on the customer's home network with control over a meaningful electrical load, so the regulations set baseline cybersecurity expectations aimed at preventing unauthorised remote access — the requirement aligns with the ETSI EN 303 645 consumer-IoT security baseline used across UK product security frameworks, and came into force as the regulations' second phase from 30 December 2022, later than the 30 June 2022 date for the core smart functionality requirements. In practical terms for an installer this means: never leave a unit on a default admin password, ensure the customer sets up their own app account credentials rather than sharing an installer/demo account, and check the unit has the current firmware version at commissioning rather than whatever shipped in the box, since firmware updates are often how security patches and correct default-schedule behaviour get delivered.

What installers must actually check at commissioning

Practically, on every domestic EV chargepoint commissioning job since June 2022, the checklist should include: confirming the unit is running current firmware; confirming the default off-peak schedule is active (not accidentally disabled during setup); confirming the randomised delay function is present and not bypassed; walking the customer through the boost/override function so they know how to use it; setting a unique admin password/PIN rather than a manufacturer default; and confirming the unit will still deliver a charge if the customer's home Wi-Fi or the manufacturer's cloud service is unavailable. None of this replaces the electrical commissioning tests required under BS 7671 Section 722 (insulation resistance, earth fault loop impedance, RCD/RDC-DD verification, PME open-PEN check) — smart charging compliance is an additional layer on top of, not instead of, the standard electrical commissioning process covered in domestic ev charger installation process.

Frequently Asked Questions

Does every EV charger I install have to be "smart"?

For domestic and most private workplace installations sold since 30 June 2022, yes — this has been a mandatory product requirement since the regulations came into force. There are exemptions for some fleet and restricted-access workplace scenarios and for chargepoints covered under separate public-charging legislation. Check the precise exemption criteria in the regulations before advising a commercial or fleet customer that their installation falls outside the requirement, as getting this wrong has compliance implications for whoever supplied the unit.

My customer wants the charger to just start the moment they plug in, with no delay — can I set it up that way?

You can enable the boost/override function so they can force an immediate charge whenever they choose, and that's compliant — the regulations require that override capability. What you should not do is permanently disable the default off-peak schedule and randomised delay as a blanket configuration change without the customer understanding what they're switching off; the regulations require any bypass of the demand-side response defaults to be an active user choice, ideally made per-session (via boost) rather than baked in as the new permanent default.

Is the randomised delay a fault if the charger doesn't start exactly on schedule?

No — a delay of up to 10 minutes after a scheduled start time is required regulatory behaviour, not a malfunction (this can extend to up to 30 minutes specifically where the unit is enrolled in an active demand-side response service). Explain this to customers at handover so it doesn't generate an unnecessary callback.

Are workplace chargers for staff-only use covered by the same rules?

Workplace chargepoints that are not accessible to the public may have different requirements or fall under exemptions depending on the specific arrangement (e.g. fleet-only, restricted-access). Check the exact scope in the regulations before treating a workplace installation as automatically exempt — many staff car park chargers used by employees' own private vehicles are still within scope.

Does smart charging compliance affect OZEV or other chargepoint grant eligibility?

They're separate systems. Smart charging compliance under SI 2021/1467 is a product-level legal requirement for units sold into the GB market; chargepoint grant schemes have their own separate eligibility criteria (property type, installation location, applicant status). See ev charger pricing guide for current grant context — don't assume a smart-compliant unit is automatically grant-eligible or vice versa.

Regulations & Standards

• The Electric Vehicles (Smart Charge Points) Regulations 2021 (SI 2021/1467) — primary legislation covered in this article: smart functionality (in force 30 June 2022), default off-peak schedule, randomised delay, boost override, cybersecurity baseline (second phase in force 30 December 2022)

• Automated and Electric Vehicles Act 2018 — parent Act under which SI 2021/1467 was made

• The Public Charge Point Regulations 2023 (SI 2023/1168) — separate regulations covering public (non-private) chargepoint reliability, payment and pricing transparency requirements, distinct from the domestic smart charging regulations

• BS 7671:2018+A4:2026, Section 722 — Requirements for Electrical Installations: electric vehicle charging equipment, covers circuit design, protective device selection and earthing requirements alongside (not instead of) the smart functionality regulations

• ETSI EN 303 645 — consumer IoT cybersecurity baseline standard that SI 2021/1467's cybersecurity requirements align with

• DNO notification procedures (G98/G99/G100) — Energy Networks Association engineering recommendations governing connection notification for EV chargepoints, separate from but related to smart charging compliance

• GOV.UK — The Electric Vehicles (Smart Charge Points) Regulations 2021 — full statutory instrument text

• GOV.UK — Electric vehicle chargepoint and infrastructure grant guidance — grant scheme context, distinct from smart charging compliance

• Office for Product Safety and Standards (OPSS) — enforcement body for the regulations

• Energy Networks Association — EV chargepoint connection guidance — DNO notification and grid connection context

• ev charger — general EV charger installation overview, circuit and grant basics this article expands on

• domestic ev charger installation process — the full 9-stage install process including BS 7671 Section 722 design and DNO notification

• ev charger faults — fault diagnosis tree including smart-schedule default faults and comms issues

• ev charger pricing guide — pricing and grant eligibility context, separate from smart charging product compliance