Grid connection for homes explained

Connecting your home or a new energy system to the UK's electricity grid can seem complex, involving various regulations and parties. This guide aims to clarify the process, offering practical steps for homeowners looking to integrate new residential properties or microgeneration systems into the national network.

Managing your home's energy connections should be straightforward. Fuse Energy is here to simplify how you interact with the grid, whether you're installing an EV charger or managing your smart meter. We offer clear support and digital tools to make your energy journey smoother. Click here to see how Fuse can help you manage your home's energy.

Understanding grid connection in the UK

Grid connection refers to the physical and administrative process of linking any electricity-generating or consuming property to the wider electricity network. For homeowners, this typically means connecting a new build, an electric vehicle (EV) charger, or a renewable energy system like solar panels. Understanding the key players and their roles is the first step in navigating this landscape.

What is the National Grid?

The National Grid, specifically National Grid Electricity Transmission (NGET), operates the high-voltage transmission network across Great Britain. This network consists of large pylons and cables that transport electricity over long distances at high voltages (275kV and 400kV) from power generators to major demand centres. Most homeowners will not interact directly with National Grid, as their connection needs are handled at a more local level.

The role of distribution network operators (DNOs)

Distribution Network Operators (DNOs) are the primary point of contact for most residential and small-scale generation connections. These companies manage the lower-voltage local electricity networks that distribute power from the national transmission grid to homes. DNOs own, operate, and maintain the local infrastructure, including substations, cables, and power lines, and are responsible for fixing power outages in their areas.

There are 14 licensed DNOs in Great Britain, each responsible for a specific geographical region. To find out which DNO operates in your area, you can use the Energy Networks Association's (ENA) postcode lookup tool or dial 105, the free national power cut emergency number.

Types of grid connections for homes

The type of grid connection you need depends on your project, each with its own specific requirements and procedures.

Connecting new residential properties

For new homes or developments, a new electricity supply connection is required. This involves working with your local DNO to establish the physical connection to their network and install a meter. The process can vary based on the property's location and the existing network capacity.

Integrating renewable energy systems

Homeowners looking to install renewable energy systems, such as solar panels or small wind turbines, need to ensure their systems comply with specific regulations for connecting generation equipment to the grid. This often involves notifying or seeking approval from your DNO, particularly under Engineering Recommendations G98 or G99.

EV charger connections

Installing an electric vehicle (EV) charger at home also constitutes a grid connection. While many standard EV charger installations are straightforward, it's essential to inform your DNO, especially if the charger has a high power rating, to ensure the local network can support the additional demand.

The grid connection process: step by step

Connecting to the grid, whether for a new property or a new energy system, generally follows a structured process.

Initial enquiry and application

The first step is to determine the specific type and scale of grid connection required for your project. Once identified, you'll need to contact your local DNO. They will provide the necessary application forms or guidance for your specific connection type. Providing all required technical details accurately at this stage can help prevent delays.

Technical assessment and offer

Upon receiving your application, the DNO will conduct a technical assessment to evaluate the impact of your proposed connection on the local network. This assessment determines if any network upgrades are needed. Following this, the DNO will issue a connection offer, outlining the technical requirements, any associated costs, and estimated timelines for the work.

Installation and energisation

If you accept the DNO's offer, the necessary installation work can proceed. This might involve physical connection work by the DNO or an accredited independent connection provider, as well as the installation of your equipment (e.g., solar panels, EV charger). Once all technical and safety standards are met, the DNO will provide final approval and energise your connection, allowing your system to operate or your property to receive power.

Navigating regulatory requirements (G98 and G99)

Regulatory compliance is a critical aspect of connecting generation equipment to the UK grid. Engineering Recommendations G98 and G99 are the main frameworks governing these connections.

Engineering Recommendation G98 explained

Engineering Recommendation G98 applies to small-scale generation systems, typically those with an output of up to 16amperes (A) per phase (equivalent to approximately 3.68 kilowatts for a single-phase supply). These systems, often found in residential settings, require notification to the DNO. For compliant plug-in solar installations, the consumer or their supplier must notify the DNO under G98 within 28 days of installation.

Engineering Recommendation G99 explained

Engineering Recommendation G99 applies to larger generation systems, specifically those with an output exceeding 16A per phase. This category typically includes larger domestic solar installations or commercial generation projects. Connecting under G99 involves a more detailed application and approval process, often requiring a formal agreement with the DNO before the system can be energised.

DNO notification for plug-in solar

Since 27 August 2026, SI 2026/848 has legalised compliant plug-in solar systems for connection via a standard BS 1363 plug under specific conditions. For these devices, the maximum alternating current (AC) export limit is 800W per device. Even with this simplified connection, the consumer or their supplier must still notify the DNO under G98 within 28 days of installation. It's important to note that this legislation applies only to standalone plug-in solar and does not cover plug-in batteries or hybrid solar-battery kits.

Costs and timelines for residential connections

Underestimating the time and cost involved in grid connection is a common pitfall. Realistic expectations are key for residential projects.

Factors influencing connection costs

The cost of a residential grid connection can vary significantly based on several factors:

• Type of connection: A new supply for a property will typically cost more than connecting an EV charger.
• Location: The proximity to existing network infrastructure can impact costs. Connections in rural or remote areas may be more expensive due to the need for new cabling or equipment.
• Network capacity: If the local network requires upgrades to accommodate your connection (e.g., new transformers or reinforcement of cables), these costs will be passed on.
• DNO charges: DNOs have regulated charges for various connection services.

Typical timelines to expect

Connection timelines are also variable:

• Simple connections: For straightforward installations like an EV charger or a small solar system, the process from application to energisation might take a few weeks to a couple of months, assuming no network upgrades are required.
• Complex connections: New property connections or larger generation systems requiring significant network reinforcement can take several months, or even longer, depending on the scale of work involved and DNO workload.

It's always advisable to factor in potential delays and allow ample time for the connection process, especially if it's critical to your project's completion.

Fuse Energy's approach to home grid integration

Fuse Energy empowers homeowners by demystifying complex grid connection processes for smart energy solutions. We challenge the notion that energy integration must be difficult, providing support and tools to make the journey smoother.

Simplifying smart meter connections

Fuse supports the integration of smart meters into your home energy setup. Smart meters are crucial for understanding your energy consumption and can unlock access to smart tariffs. We help customers manage their energy and understand how their home systems connect to the wider grid through digital tools and 24/7 human support.

Supporting EV charger installation

If you're considering an EV charger, Fuse can facilitate the installation of an Easee One charger at your property for £899, including full installation and a 3-year warranty. Fuse is an OZEV-approved installer. While government grants are available for EV chargepoints, eligibility is now highly specific. The EV Chargepoint Grant for renters and flat owners, and the EV Chargepoint Grant for households with on-street parking, each provide up to £500 towards installation. The broader scheme for owner-occupiers in houses with private off-street parking was discontinued from April 2026. For domestic grants, you apply directly via GOV.UK.

Assisting with microgeneration notification

For homeowners installing microgeneration systems, such as compliant plug-in solar, Fuse can assist with the necessary DNO notification under G98. We help ensure that your system is registered correctly, aligning with regulatory requirements and making grid connection smoother for our customers. By supporting home energy upgrades, Fuse contributes to a more integrated and efficient energy system.

Managing your home's energy should be simple and transparent. Fuse Energy offers clear pricing, real-time usage data through our app, and 24/7 human customer support to help you navigate your energy needs. Switching to Fuse is quick and easy, allowing you to take control of your energy bills from day one. Click here to switch to Fuse Energy today. To learn more about our mission for a cleaner energy future, click here.