DNO Notification Explained for Plug-In Solar Systems in the UK

If you are buying a plug-in solar kit, one of the first practical questions is whether you need to tell anyone before or after connecting it. The short answer is that small grid-connected solar systems in the UK usually fall under G98, which is a notification route rather than a permission-first process.

This guide gives DNO notification explained for plug-in solar systems in plain English. It covers what G98 means, the 28-day rule, what details you need, how to find your DNO and MPAN, and what to expect after you submit the notification.

Alt: DNO notification explained for plug-in solar systems

Quick answer: DNO notification for plug-in solar

DNO notification explained for plug-in solar systems means telling your local Distribution Network Operator that a small generator has been connected at your property. 

• G98 systems should normally be notified to the DNO within 28 days of commissioning or connection.
• G98 is a notification process, not prior approval, for suitable type-tested microgeneration systems.
• Equipment, inverter settings and installation methods must still meet UK grid connection requirements.

What is a DNO for plug-in solar systems in the UK?

A Distribution Network Operator (DNO) runs the local electricity network, including cables, substations and related infrastructure. Your DNO is relevant because a plug-in solar system connects to this network as a small generator, so the operator needs accurate local generation records.

DNO versus energy supplier

DNO vs energy supplier can be confusing. Your supplier sends bills and manages your tariff. Your DNO is the regional network operator. You cannot choose it, and it stays the same if you switch supplier. It handles connections, power cuts and local grid infrastructure.

Why DNOs need visibility of small generators

DNOs need to know about small generators because power can flow both ways on local networks. One system rarely causes problems, but many nearby can affect voltage and capacity. Notification supports safety records, network planning, upgrades, and proves you followed the correct connection process.

G98 and G99 compared

G98 vs G99 solar rules are about size and complexity. G98 is the simpler route for small, fully type-tested microgeneration. G99 is used for larger systems or installations that need more detailed network assessment before connection.

Total inverter capacity on the same phase is what matters, not only panel wattage. For example, 1,000W panels may feed an 800W AC inverter. If you already have solar or battery inverters, add their outputs before confirming G98 eligibility.

When do you need to notify your DNO?

Notify your DNO when a grid-connected plug-in solar system is commissioned under G98. The 28-day period usually starts from connection or commissioning, depending on wording. Confirm the date with your installer and prepare the paperwork before switching on.

• Commissioning date and connection date: Record the date the system was first energised and able to generate AC power; for simple installations, commissioning and connection dates are often the same.
• Existing solar, extra inverters and batteries: Notify the DNO based on the combined system, and check battery export capability and product requirements.
• Moving home and reconnecting the system: Treat reconnection at a new address as a fresh notification, as a new MPAN or DNO region may apply.

What information do you need for a G98 notification?

Most G98 forms request similar details, though each DNO portal may look different. Before applying, gather your electricity bill, inverter documents, and installer certificate. Having these ready speeds up submission and helps avoid follow-up questions.

• Address, postcode and MPAN: Provide the installation address, postcode and 13-digit MPAN (Supply Number), not the meter serial number.
• Inverter details: Include the inverter manufacturer, model, serial number and rated AC output, based on the inverter’s grid output rating.
• ENA compliance evidence: Provide the ENA type-test reference, certificate or manufacturer documentation confirming G98 compliance.
• Installer details: Include installer information where required and obtain technical details if you submit the notification yourself.
• Commissioning date and generation type: State the commissioning date and generation type, such as solar photovoltaic; add battery details if applicable.

How to find your DNO and MPAN

The two main blockers are identifying your DNO and finding your MPAN. Your DNO is determined by postcode, while your MPAN belongs to your electricity supply point. Once you know where to check, both are usually simple to confirm.

Using the ENA postcode lookup

Use the Energy Networks Association postcode lookup to identify your local DNO. Enter your postcode to find the responsible network operator.

• UK Power Networks
• National Grid Electricity Distribution
• Northern Powergrid
• Electricity North West
• SP Energy Networks
• Scottish and Southern Electricity Networks

Finding the MPAN on an electricity bill or supplier app

Your MPAN is often shown on your electricity bill near the meter details. Look for “Supply Number”, “MPAN” or a boxed number associated with your electricity supply. A quick process is:

1. Open your latest electricity bill or supplier app.
2. Check meter, account or supply details.
3. Find the 13-digit MPAN, not the meter serial number.
4. Enter the MPAN exactly into the DNO form.

Asking your electricity supplier for the MPAN

If you cannot find your MPAN, contact your electricity supplier and ask for it. They can provide it because it identifies the supply point they bill. You usually do not need to ask the DNO first; your supplier is the easiest route.

Can you submit a G98 notification yourself?

You can submit a G98 form yourself, but the system must still use compliant equipment, be installed safely, and include accurate technical details. Homeowner submission only covers paperwork; it does not replace compliance. The best approach depends on your installation and DNO requirements.

• Homeowner-submitted notifications: Some DNO portals allow homeowners to submit G98 notifications directly. Ensure you have the inverter documents and MPAN, and avoid completing technical fields you cannot verify.
• Installer or electrician involvement: A qualified installer can confirm connection details, inverter ratings, protection settings and compliance documents. Confirm who will submit the notification before commissioning.
• Renter considerations: Renters may need DNO notification, but should also check tenancy terms and obtain landlord consent where equipment affects the property or wiring.

DNO notification, SEG and compliant plug-in solar equipment

DNO notification is separate from export payments, MCS certification, product suitability and electrical installation standards. A successful G98 notification records the grid connection; it does not automatically prove that every other scheme or regulation has been satisfied.

G98 notification is not Smart Export Guarantee approval

G98 notification is not the same as Smart Export Guarantee (SEG) approval for plug-in solar. SEG is an export payment scheme from electricity suppliers, while G98 notifies the network operator. A DNO-notified system may still not qualify for SEG payments.

MCS and export payment requirements

Many SEG tariffs require MCS certification or an accepted equivalent and a smart meter that measures export. Plug-in solar may not qualify, even with a G98-compliant inverter. If export payments affect payback, check your supplier’ s SEG rules before buying.

Choosing a G98-compliant plug-in solar system in the UK

For UK homeowners considering grid-connected energy equipment, products such as Anker SOLIX Solarbank 4 E5000 Pro can be a suitable option when paired with G98 documentation, UK compliance information and clear installation guidance. 

Rather than focusing only on wattage, buyers should check whether the system is designed for UK grid requirements and supported by proper technical documentation.

Key features include:

• 800W grid-tied output: Provides plug-and-play support for everyday household loads through a standard wall socket.
• 2,500W bidirectional charging: Enables faster charging during off-peak periods and supports higher-power applications.
• Flexible solar expansion: Four MPPTs support up to 12 solar panels, with potential annual generation of up to 5,586kWh.
• Adaptable home energy use: Helps households manage daily consumption, solar generation and future energy needs.

Conclusion

DNO notification explained for plug-in solar systems is a simple compliance process: first confirm the total AC inverter capacity at the property is within G98 limits, including any existing solar, batteries or inverters, not just panel wattage. Check inverter compliance by saving the ENA reference, certificate or manufacturer documentation, then use the ENA postcode lookup to identify the correct DNO and find your MPAN on your bill or supplier app. 

Submit the G98 notification within 28 days of commissioning, confirm whether your installer will do it, and keep proof of notification, acknowledgements and documents for future supplier changes, export payments or home sale.

FAQ

Do I need to notify my DNO about plug-in solar in the UK?

Yes, if your plug-in solar system connects to the grid, you usually must notify your DNO under G98 within small microgeneration limits. This records the connection at your MPAN. The process is simple, but UK-suitable equipment and installation are still required.

What happens if I do not submit a DNO notification within 28 days?

If you miss the 28-day deadline, notify the relevant party as soon as possible. Late notification may cause issues with insurance, metering, export payments, or property records. While penalties are not always automatic, registering the generator promptly is the safest approach.

Does a G98 notification qualify me for Smart Export Guarantee payments?

No, a G98 notification does not automatically qualify you for Smart Export Guarantee payments. SEG is arranged through energy suppliers, with separate certification and metering rules. You may need MCS or equivalent evidence, an export-capable smart meter, and a supplier that accepts your system.

What if my inverter is not G98 type-tested?

If your inverter is not G98 type-tested, do not assume it can be notified under G98. Your DNO may require another approval route, and the unit may be unsuitable for UK grid connection. Check the ENA register or manufacturer documents before buying.