DNO Permits for EV Charger Installation

Updated August 2026 with current grant amounts, prices and regulations.

Embracing the future of sustainable mobility requires understanding the critical role played by Distribution Network Operator (DNO) permits in the installation of Electric Vehicle (EV) chargers. Indeed, when you plan to install an EV charger, the installation must be notified to, or approved by, your local DNO. DNOs are the companies that own and run the electricity distribution network in each region (in London and the South East this is UK Power Networks). Notifying the DNO is important to ensure that the local electricity grid can support the additional load from the EV charger.

Strictly speaking, what most people call a "DNO permit" is a notification or connection application under the Energy Networks Association (ENA) process that all UK DNOs follow. In 2026 every new home charge point must also be a smart charger under the Electric Vehicles (Smart Charge Points) Regulations 2021, so DNO notification and smart-charger compliance now go hand in hand.

This post will unravel the complexities, providing insights and expert advice to streamline your experience. By the way, when you order home car charger installation from us, our engineering partner will take all the paperwork related to the DNO permit on their shoulders.

DNO Permits for EV Charger Installation: Decoding the Basics

Embarking on the journey of EV charger installation begins with comprehending DNO permits. Under the ENA process there are two routes. If the property's total maximum demand, including the new charger, stays at or below 60 A per phase (a typical 7 kW single-phase charger draws 32 A), the installer can fit the charger first and then notify the DNO within 28 days ("connect and notify"). If the demand would go above that, the supply is looped or undersized, you want a 22 kW three-phase unit, a DC charger, more than one charge point or a load-management scheme, the installer must apply to the DNO and get approval before installation ("apply to connect"). Both routes are free of charge; you only pay if the network itself needs work, such as a fuse or three-phase upgrade.

Navigating this process ensures compliance with safety and operational standards, and it protects your fuse, your neighbours' supply and the local substation from being overloaded.

Applying for DNO Permits

Initiating the process requires a meticulous application. When preparing a comprehensive application, one should address the essential criteria, which can facilitate a speedy review by the DNO. That is to say, for a successful permit approval, it is a must to ensure your chargepoint adheres to safety, environmental and technical standards, and, for a home unit, that it meets the smart charge point regulations.

The process involves submitting a notification or an application to the DNO (in London through UK Power Networks' Smart Connect installer portal), providing details about the installation and, where required, obtaining approval before the work starts. This helps the DNO assess the impact on the local electricity network and make any necessary upgrades to accommodate the increased demand.

Indeed, ensuring your EV charging station aligns with technical specifications is a critical aspect of the permitting process. Our and our partner engineers will guide you through the technical nuances, helping you meet the necessary standards. For example, they prepare and submit the charger's make, model and rating, the property's maximum demand calculation and, for larger sites, a site plan and electrical drawings. If you are also claiming the £500-per-socket EV chargepoint grant (available in 2026 to renters, flat owners and households with only on-street parking; see our grant guide), the installer handles that paperwork alongside the DNO notification.

DNO Permits for EV Charger Installation: Insider Tips and Tricks

Building a positive relationship with DNO representatives can significantly expedite the permitting process. Our and our partner engineers follow effective communication strategies and collaborative approaches, and they know exactly which route each installation falls under, so nothing is submitted twice or too late.

Anticipating and overcoming challenges is vital in the journey to obtain DNO permits. The most common hurdles in London are looped supplies (two houses sharing one service cable), 60 A main fuses and homes without a three-phase supply that want a 22 kW charger. We perfectly know these hurdles and always provide proactive solutions to ensure a seamless pipeline. Typical installation costs in London are £900 to £1,200 for a standard 7 kW unit, rising to £1,300 to £1,800 where a new consumer unit, earthing or a long cable run is needed.

The timeframe for DNO permit issuance varies. A connect-and-notify installation needs no waiting at all: the charger goes in and the notification follows within 28 days. A straightforward apply-to-connect application is usually answered within about ten working days, while jobs that need a fuse upgrade or network reinforcement can take from a few weeks to a few months.

DNO Permits for EV Charger Installation: Addressing FAQs

How long does it take to obtain a DNO permit?

For most single 7 kW home chargers there is no wait, because the installer notifies the DNO after the work. Where prior approval is needed, allow around ten working days, or longer if the supply has to be upgraded.

Are there specific standards for EV charging station construction?

Yes, there are standards set by regulatory bodies: BS 7671 (the IET Wiring Regulations), the ENA connection procedure, the Electric Vehicles (Smart Charge Points) Regulations 2021 for home units, and Part S of the Building Regulations, which requires charge points or ducting in new homes and major renovations.

Is there a limit to the number of charging stations in one application?

The number of charging stations in one application depends on the DNO and local network capacity. A single home charger normally goes through connect and notify; several chargers on one supply, workplace car parks and DC rapid chargers always need a prior application. It's advisable to consult with the DNO representative for clarity on this matter, and our team does this for you as part of our EV charger installation in London.

Conclusion

Navigating the world of DNO permits for EV charger installation demands a strategic approach and in-depth knowledge. By following our guide, you'll not only streamline the permitting process but also contribute to the growth of sustainable transportation.