Installations of up to 3.68kW per phase at more than one property

If you are planning to install a generator or multiple generators, we will need the full technical details of the generation equipment proposed and its location. The connection process varies according to the size of the generation equipment.

For guidance, please use our Generation Connection Guide.

To find out what applications we have, please visit our guide here. 

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If your installation is rated at less than 3.68 kilowatts, your installer should notify us by completing an Installation Commissioning Confirmation Form on your behalf. They can notify us by email:

In Scotland: Notifications.northmicrogen@sse.com

In England: Notifications.southmicrogen@sse.com 

If you are planning to install a generator rated above 3.68 kilowatts, or multiple generators, at multiple premises, we will need the full technical details of the generation equipment proposed and its location. The connection process varies according to the size of the generation equipment. For guidance, please use our Generation Connection Guide.

If the distributed generation being installed is under 30 kilowatts your supplier will arrange your export MPAN.

If distributed generation between 30 kilowatts and 50 kilowatts the network planner will be able to provide your export MPAN.

If distributed generation above 50 kilowatts your Account Manager will provide this.

In Scotland: Notifications.northmicrogen@sse.com

In England: Notifications.southmicrogen@sse.com 

Once you’ve planned your project and shared the details with us, your installer should submit the application form on your behalf. The application must include the technical details of your generating unit so we can review its impact on our network. Based on this assessment, we’ll provide the conditions for your connection. Afterward, your unit can be installed and commissioned according to G99 and any specific requirements.

For installations under G99 or G98, we recommend your installer completes the appropriate notification form on your behalf.

We need to be notified about each generating unit you install and commission. Your installer must provide us with an Installation Commissioning Confirmation within 28 days of each generating unit being commissioned. 

If you are looking to get paid for exporting to the grid check with your supplier if they offer an export tariff, this was previously known as a Feed-in Tariff which was a government incentive to encourage small scale low carbon electricity generation under five megawatts. This is no longer available, but some suppliers now offer their own export tariffs.

Most suppliers will require a ‘DNO Response’ in order to apply for an export tariff, this is the email which is sent from us to confirm that we have logged your commissioning documents on our system and confirm the system is compliant with G98/G99. Once you have received this email you will be able to apply for an export tariff.

The Microgeneration Certificate Scheme (MCS) is an internationally recognised quality assurance scheme, supported by the Department of Energy and Climate Change. It certifies microgeneration technologies that produce heat and electricity from renewable sources.  For more information, please see the Microgeneration Certification Scheme.

We class your generation scheme as Distributed Generation (DG) if it operates while electrically connected to our distribution network. The term “Embedded Generation” is sometimes used. You can use the electricity you generate from your DG scheme to reduce your consumption from the network. Alternatively, you can export some or all of it to our network.

When you don’t need an Export Limitation Scheme: 

• If you have no generation connected to your property. 

• If your total generation capacity is 3.68kW or less (most domestic solar PV systems meet this, but check with your provider). 

• If you plan to install generation and don’t want to export power to the grid, as long as your total generation capacity is below your minimum energy demand. 

• If you plan to export power to the grid and we confirm there is enough spare capacity in the network to accommodate it. 

When you might need Export Limitation Scheme: 

• If you want to install generation, export power, and we tell you there isn’t enough spare network capacity. In this case: 

• An Export Limitation Scheme could be cheaper than paying for network upgrades. 

• It could also mean a faster connection to the grid. 

Why Export Limitation Matters: 
Exporting too much power can overload the network or cause unsafe voltage levels, potentially damaging equipment. An Export Limitation Scheme prevents these issues by ensuring exported power stays within safe limits. 

The total capacity of generation that you can connect to our network is subject to a number of requirements set out in our code of practice and will vary depending on the type of connection you have to our network and where you are connected to our network.  For domestic customers, the maximum amount of permitted generation will typically be between 5kW and 15kW.

The maximum permitted amount of generation you can connect is the lesser of the following two values:

• 125% of your import or export agreement (whichever is greatest)
• The amount of exported power required to cause the voltage at any customer's point of supply to exceed the statutory voltage limit by 1%.

G98 and G99 are technical standards for the protection settings required for generators or storage assets to connect to electricity networks. These settings act as a safety mechanism to protect both the network and the equipment from faults. 

Since April 27, 2019, all generating equipment connected to any electricity distribution network, whether managed by a Distribution Network Operator (DNO) like SSEN or an Independent Distribution Network Operator (IDNO)—must comply with these standards outlined in the Energy Networks Association (ENA) engineering recommendation documents.