What is a Distribution Network Operator (DNO) and what do they do?
A Distribution Network Operator (DNO) is in charge of managing and maintaining the UK’s local and regional electricity supply. They are licensed to distribute electricity and operate the infrastructure in their designated area, such as cables and towers. The DNO is an important part of ensuring that electricity arrives at your property safely and efficiently.
DNOs act as go-betweens for the National Grid and your energy provider. They are in charge of the electricity distribution chain, which includes the cables, poles, and metres that deliver electricity to individual properties. Their primary responsibility is to maintain the infrastructure and ensure that consumers have a consistent and dependable supply of electricity.
When installing an EV home charger, you must notify your DNO of the expected maximum demand at your property. This enables them to determine whether the existing electrical supply is adequate to handle the increased load. Before the installation can begin, they may need to approve the installation or perform work on your property to upgrade the electrical supply.
Notification Process and DNO Response Time
Different DNOs have different approval processes for EV charger installations, which can affect response and installation times. Unfortunately, the installer has no direct control over the DNO’s response time. To avoid potential delays, it is critical to communicate with your DNO and understand their specific processes and requirements
De-rating Chargers and Temporary Installations
If the maximum demand on your property is likely to exceed the electrical supply, some chargers can be “de-rated” to use less power temporarily. This allows the installation to proceed without incident until the DNO upgrades the supply, at which point the charger can be returned to full power. This can be a useful solution to avoid lengthy installation delays.
DNO Upgrades and Potential Delays
Before the installation can be completed, your DNO may need to perform work on your property, such as an upgrade. Any delay in DNO approval for installation is in addition to the installer’s standard lead time. When planning your EV home charger installation, it is critical to account for potential DNO delays. Some of the factors that may cause these delays are listed below:
Looped Supply Separation
A looped supply occurs when properties share a connection to the electrical network. In such cases, the DNO may insist on “de-looping” the properties before an EV charger installation can take place. This is beyond the installer’s control, and they are reliant on the DNO completing the works before the installation can proceed.
Fuse Upgrade Requirements
The installer must calculate the estimated electrical demand on your property and notify your DNO as part of the due diligence process. If your main fuse cannot handle the load, you may need to upgrade it. Your DNO must complete this upgrade, which can take up to two months and potentially delay the installation process.
New Meter Requirements
Your DNO may require the installation of a new metre before an EV charger can be installed in some cases. This is outside of the installer’s control and can cause significant delays because the DNO’s lead times and processes differ between operators. Being aware of potential delays and staying in touch with your DNO can help you manage expectations.
Will my DNO need to undertake work on my property?
In many cases, installing an EV charger is a simple process that only requires the DNO to check and approve the installation. However, in some cases, the DNO may need to perform work on your property before the installation can begin.
Your DNO may require specific property work, such as a fuse upgrade, cable upgrades, or unlooping your power supply if it is connected to a neighbour’s supply. If the DNO determines that these works are required, they must be completed prior to the installation of the EV charger.
The installer has no control over any work required by the DNO, and the DNO will arrange the necessary tasks directly with you. To ensure a smooth installation process, it is critical to maintain open communication with your DNO and stay informed about the progress of any works.
Finding your Local DNO
SSE, SP Energy Networks, Electricity Northwest, Northern Powergrid, Western Power Distribution, UK Power Networks, and Northern Ireland Electricity are the six DNOs in the United Kingdom. To find out which DNO is in charge of your area, go to the Energy Networks website at https://www.energynetworks.org/info/faqs/who-is-my-network-operator.html.
DNO Regions and Responsibilities
Each DNO is in charge of a specific geographical region within the United Kingdom, and their responsibilities include maintaining the electrical infrastructure and ensuring a consistent supply of electricity. Understanding the specific requirements and processes that may impact your EV home charger installation requires knowledge of your DNO.
Understanding your DNO’s role and maintaining clear communication with them are critical for a smooth EV home charger installation process. Knowing about potential delays and the reasons for them can help you plan ahead of time and have a positive experience when installing your EV charger.
Understanding the EV Charger Installation Process
Before the installation, a qualified electrician or EV charger installer will typically conduct a site assessment to evaluate your property’s electrical system and identify any potential issues. This assessment will help determine if any upgrades or modifications are required before the EV charger installation can proceed.
There are various types and brands of EV chargers available in the market, with different power capacities and features. Understanding the differences between them and selecting the right one for your needs can ensure a smooth installation process and optimal charging experience. Factors to consider include your vehicle’s charging capabilities, your daily driving habits, and any future plans to upgrade your electric vehicle.
Working with Your Energy Supplier
Many energy suppliers offer time-of-use tariffs, which provide lower electricity rates during off-peak hours. By coordinating with your energy supplier, you can take advantage of these tariffs and save money on your EV charging costs. Some EV chargers also offer smart charging features, which can automatically schedule charging sessions during off-peak hours to maximise savings.
Government Grants and Incentives
In some regions, government grants and incentives are available to help offset the cost of EV charger installations. Research the eligibility requirements and application process for any available grants in your area, and work with your installer to ensure you receive any available financial assistance.
EV Home Charger Post Installation Considerations
Once your EV charger is installed, it’s essential to understand the proper maintenance procedures and steps to take if you encounter any issues. Regularly inspect your charger for any signs of wear or damage, and contact your installer or the charger manufacturer if you need assistance with troubleshooting or repairs.
Preparing for Future EV Charging Needs
As electric vehicle technology continues to evolve, it’s essential to consider how your charging needs may change in the future. Plan for potential upgrades to your EV charger, such as increasing its power capacity, adding additional charging ports, or integrating smart charging features.
Final Thoughts
The Distribution Network Operator plays a vital role in the EV home charger installation process. Although potential delays are usually beyond the control of the installer, understanding the DNO’s role and maintaining clear communication with them can help facilitate a smooth installation process.