Solar export tariffs: explained

Solar panel systems can save you hundreds of pounds on your energy bills every year – but even with a solar battery, you’ll always generate more electricity than you can use.

That’s where solar export tariffs come in, to pay you for all the electricity you send to the grid.

In this guide, we’ll go through all the requirements of signing up for a solar export tariff, every step of the process, and how much you can expect to earn.

If you’re interested in how much you could save with a solar & battery system, answer a few quick questions below and we'll provide you with an estimate.

What is a solar export tariff?

A solar export tariff pays you for all the electricity you send to the grid.

At first, solar export tariffs were created in response to the government launching the Smart Export Guarantee (SEG) in 2020.

This initiative compels energy suppliers with 150,000 customers or more to pay households for any renewable energy – including solar electricity – they export to the grid.

But some companies have now released solar export tariffs that are more profitable than other SEG rates, making them the best export tariffs around.

How much will I get paid?

How much you’ll get paid by a solar export tariff primarily depends on two main factors: how many kilowatt-hours (kWh) of electricity you send to the grid, and the rate you sign up to, which will be measured in pence per kWh.

You’ll export around 34% of the electricity your panels generate, on average – a figure we’ve based on a household experiencing average UK irradiance with a 4.4kWp solar panel system and a 5.2kWh battery, using 3,500kWh of electricity each year.

A typical household will earn somewhere between £200 and £400 from exporting to the grid, which is miles better than the situation in 2020 when the Smart Export Guarantee had just begun.

What are the requirements for a solar export tariff?

To sign up for a solar export tariff, you’ll always need to have a smart meter, as well as documents that prove you own a certified, permitted solar installation.

Some suppliers require you to own a specific brand’s solar panels or battery – usually their own – while others only offer their highest rates to customers in certain geographical areas.

And while you’re free to export your solar electricity to a different supplier from the one you import your electricity from, companies generally only make their best export tariffs available to their own import customers.

Here’s everything you may need to qualify for a solar export tariff:

• Solar panels
• A smart meter
• A document showing your system is certified under the Microgeneration Certification Scheme (MCS) or Flexi-Orb
• Proof that you own your solar panel system
• A successful G98 application if your inverter capacity is 3.68 kW or less, or
• A successful G99 application if your inverter capacity is more than 3.68 kW
• A single-line diagram or schematic of the system
• A solar battery

How do you sign up for a solar export tariff?

Once you have a smart meter and a solar installation that’s been certified by either the MCS or Flexi-Orb, you’re ready to sign up for a solar export tariff.

Just follow the steps below, and you’ll be receiving payments before you know it.

1. Choose your solar export tariff

The first step is to go through all the best export tariffs, and decide which of the highest-paying rates suits your household.

Intelligent Octopus Flux is generally the best option for most people, although it requires you to have a compatible brand of battery.

If your chosen solar export tariff requires you to move to a different electricity supplier, you’ll need to complete the switch before applying for that provider’s export tariff.

Customers who decide to receive an export tariff from the supplier they currently receive their electricity from won’t have to go through this process – but may lose out on savings.

2. Fill in an application form

Most export tariff suppliers have online applications, while others require you to email your completed form.

You’ll have to send a list of documents, either with your online application or just after submitting it. These files will vary depending on your supplier, but they can include:

• An MCS or Flexi-Orb certificate
• Photographic proof you have a smart meter
• A recent electricity bill / other proof of address
• Proof that you own the solar installation
• A schematic or single-line diagram of your system
• Proof that your DNO has approved your G98 or G99 application
• Your bank details, if you don’t already receive your electricity from the supplier

For example, to apply for Intelligent Octopus Flux, you must already be signed up to an Octopus export tariff.

Once you’ve completed that process, you just need a smart meter, a system with solar panels and a compatible brand of battery.

3. You or your export tariff supplier will contact your DNO

Within around two days, your export tariff supplier will process your application.

At this point, either you or your supplier should contact your Distribution Network Operator (DNO), which is the organisation that runs the hardware supplying electricity to your region.

The DNO will then supply your property with an export MPAN (Meter Point Administration Number) – a unique, 13-digit number that identifies your electricity meter.

This usually takes a DNO between one and four weeks, and is typically the longest stage of the sign-up process.

4. Send your supplier a meter reading

Around five days after your DNO creates your MPAN, your supplier will ask for a first export meter reading, usually along with a photo to prove the reading is correct.

You can find this information on your smart meter.

If it’s not clear how to access your export data, just ask your export tariff supplier to walk you through the process.

5. You’re ready to receive payments

Once your supplier has verified your reading, all you have to do is sit back and wait for the savings to start rolling in.

Energy companies pay export tariffs at different intervals, though. While Octopus sends your revenues on a monthly basis, OVO and Good Energy pay out every three months, and E.ON only does so once per year – unless you specifically request quarterly payments.

The first payment you get will usually be backdated to when you sent off your application for the tariff, so don’t worry: you’ll be paid for all the electricity you export in the meantime.

Can you access other earnings on top of an export tariff?

You can access some other earnings on top of an export tariff.

Firstly, you can use your solar panels as efficiently as possible. If you don’t have a solar battery, this means using your appliances – like a washing machine, dishwasher, or oven – during the daytime, when your system is generating electricity.

If you do have a battery, but you’re on a standard export tariff without time of use pricing, you’ll simply want to ensure you use as much of your solar electricity as possible, as this will be more valuable to you than exporting it.

Almost all major energy suppliers have also signed up to the Demand Flexibility Service, run by the National Grid Electricity System Operator, which offers customers financial rewards for using less energy at peak usage periods in winter.

Households can register for this programme through their supplier – and if you have a solar & battery system, it’s relatively easy for you to profit (to the tune of around £3 per kWh).

Summary

Signing up for a solar export tariff is the best way to profit from the excess electricity your solar panels generate.

If you choose one of the top tariffs, you can make hundreds of pounds by selling electricity you weren’t going to use anyway – and help make the grid greener.

And as long as you follow our simple steps, the process should be quick and straightforward.

If you would like to see the savings you could get from a solar & battery system, answer a few quick questions below and we’ll provide an estimate.