The Complete Homeowner’s Guide to Choosing the Right Solar Export Tariff
If you’ve already invested in solar panels – or you’re planning to – choosing the right electricity tariff is almost as important as choosing the solar system itself.
The best energy tariffs for solar panels can dramatically increase your savings be rewarding you for selling electricity to the grid, charging your battery during off peak hours or helping you maximise self-consumption.
Whether you’re comparing Octopus Flux, the Smart Export Guarantee (SEG), or flexible time of use tariffs, understanding how they work ensures you get the highest return from your investment.
At SolarTherm UK, we design every solar PV system around how our customers actually use electricity. As an MCS Certified, NICEIC Approved and EPVS Gold Standard installer with over 16 years of experience installing solar PV systems across Essex, Kent, Suffolk, Hertfordshire and the wider South East and East Anglia, we help homeowners choose both the right equipment and the right tariff to maximise long term savings.
Why Your Energy Tariff Matters
Many homeowners focus entirely on reducing electricity bills, but your tariff determines:
- How much you pay to import electricity
- How much you’re paid for exported electricity
- Whether battery storage delivers maximum value
- How quickly your solar system pays for itself
A poorly chosen tariff could cost hundreds of pounds each year. The right tariff can significantly improve your annual savings without changing your solar installation.
Understanding Solar Energy Tariffs
There isn’t one “best” tariff for every homeowner. The ideal choice depends on:
- Solar panel size
- Battery storage
- EV ownership
- Home energy usage
- Time spent at home
- Exported electricity volumes
The Smart Export Guarantee (SEG)
One of the most important schemes for solar homeowners is the Smart Export Guarantee (SEG). The SEG requires licensed electricity suppliers to pay eligible households for surplus electricity exported back to the National Grid. Instead of wasting unused solar generation, homeowners receive payments based on exported units (kWh). This has become the primary way UK homeowners can earn money from selling electricity to the grid.
Most homeowners qualify for SEG payments provided their solar panels are MCS certified, they have a compatible smart meter and an approved export meter. This is one reason SolarTherm UK installs fully MCS compliant systems that are eligible for export payments.
How Much Can You Earn Through SEG?
The amount varies considerably between suppliers. Payments depend on:
- Export tariff selected
- Annual exported electricity
- Smart meter readings
- Time of use pricing (for some tariffs)
Typical households may earn anywhere from £75 to several hundred pounds annually depending on system size and export behaviour. Homes with battery storage often export strategically, increasing overall value.
What Makes a Good Solar Tariff?
The best tariffs balance several factors:
- High Export Rates: the more suppliers pay for exported electricity, the greater your return
- Low Off Peak Import Rates: ideal if you own battery storage, a heat pump or an electric vehicle. Cheap overnight electricity allows batteries to charge at low cost before supplying your home during expensive periods
- Flexible Time of Use Pricing: some suppliers adjust electricity prices throughout the day. This can work extremely well alongside battery storage
Octopus Flux
One of the UK’s most popular tariffs for homeowners with soalr panels and battery storage is Octopus Flux. It is specifically designed around homes that generate solar electricity, export regularly and store electricity in batteries.
With Octopus Flux, electricity prices change throughout the day depending on demand expectations. Typically cheap overnight import, higher daytime import and premium evening export payments, allowing homeowners to charge batteries overnight, use stored electricity during peak periods and export surplus electricity when export prices are highest. For many battery owners, this provides excellent long term value.
Octopus Agile
Another popular choice is Octopus Agile. Instead of fixed electricity prices, rates change every half hour based on wholesale electricity markets. Advantages include very low prices during periods of excess renewable generation (very sunny or very windy periods), opportunity to charge batteries cheaply and flexible energy management, with more control over when and how much you pay for imported electricity.
However, prices can also increase significantly above the Energy Price Cap during high demand periods and times of political tension. This tariff suits homeowners comfortable actively managing their own energy usage.
Fixed Tariffs vs Time of Use Tariffs
Fixed Tariffs
Advantages:
- Predictable bills
- Stable electricity prices
- Easier budgeting
Best suited for:
- Homes without batteries
- Lower energy users
- Customers preferring certainty
Time of Use Tariffs
Advantages:
- Lower overnight prices
- Better battery performance
- Higher export opportunities
- Greater long term savings
Best suited for:
- Battery owners
- EV owners
- Smart home users
- Higher electricity consumption
Should You Choose Export Payments or Cheap Imports?
This depends entirely on your lifestyle.
High Export Homes
Choose:
- Better SEG rates
- Premium export tariffs
- Fixed term contracts
These are ideal for retired households who are away less often, those generating more than they consume and those without battery storage.
Higher Consumption Homes
Choose:
- Cheap overnight electricity
- Battery charging tariffs
- Lower import costs
These are ideal for family homes where the property can be empty during the day, EV owners and homes with a heat pump.
Why Battery Storage Changes Everything
Without a battery, surplus daytime electricity is usually exported immediately. With battery storage you can store excess solar electricity and use it after sunset to continue powering your home with your self-generated power. This in turn reduces imports by increasing self-consumption. Battery storage can also be used to export strategically – by exporting when rates are highest and storing when rates are lower. For many homeowners, battery storage delivers the biggest improvement in overall savings.
How SolarTherm UK Helps You Choose the Best Tariff
Installing solar panels is only part of the journey. At SolarTherm UK, we also advise customers on:
- Suitable SEG providers
- Export registration
- Battery optimisation
- Time of use tariffs
- Smart meter compatibility
- Future energy flexibility
As every household uses electricity differently, our recommendations are tailored to your property, energy usage and future plans. Our experienced, in house teams consider far more than panel numbers – they help maximise your long term financial return.
Why Homeowners Across the South East Choose SolarTherm UK
Homeowners across Essex, Kent, Suffolk, Hertfordshire and the wider South East and East Anglia trust SolarTherm UK because we provide:
- Over 16 years of solar installation experience
- MCS certified installations
- NICEIC approved electrical work
- EPVS Gold Standard membership
- Expert system design
- Battery storage expertise
- Ongoing customer support
- Guidance on export registration and energy tariffs
Our goal isn’t simply installing solar panels – it’s helping homeowners maximise every unit of electricity they generate.
Conclusion
The best energy tariff is the one that complements the way your household uses electricity. Whether you want to maximise SEG payments, benefit from Octopus Flux, reduce import costs or optimise a battery storage system, selecting the right tariff can significantly improve the value of your solar investment.
At SolarTherm UK, we help homeowners across Essex, Kent, Suffolk, Hertfordshire and the wider South East and East Anglia make informed decisions – not just about soalr panels, but about the tariffs and technologies that maximise lifetime savings. From system design and MCS certified installation to export registration and battery optimisation, our expertise ensure your solar PV system works harder for you every day.
Contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice – and the time you need to make an informed decision.
Your home. Your energy. Your future.
Frequently Asked Questions
The Smart Export Guarantee (SEG) is a government-backed scheme requiring participating electricity suppliers to pay eligible homeowners for excess renewable electricity exported to the grid.
For many households with both solar panels and battery storage, Octopus Flux can offer excellent value by combining off-peak import rates with higher export payments. Whether it’s the best option depends on your usage patterns and export volumes.
Yes. In many cases, you can change your export tariff while keeping the same solar PV system, provided you meet the supplier’s eligibility requirements.
Yes. Battery storage is not required to receive Smart Export Guarantee payments. However, a battery can help you decide when to use or export electricity, potentially improving your overall financial return.
There is no single best tariff for every homeowner. The right option depends on your solar generation, electricity usage, battery storage, and whether you prioritise higher export payments or lower import costs.
