Solar Export Tariff Rates: A Homeowner Guide to SEG Payments in London & Kent

How much can I earn exporting solar electricity? Homeowners in the UK can typically earn between 5.5p and 25p per kWh exported to the grid, depending on their supplier and tariff. A typical 4kWp system exporting 2,400 kWh annually could potentially earn between £132 and £600 per year, depending on the specific export rate secured. ## What is the Smart Export Guarantee (SEG)? The Smart Export Guarantee (SEG) is a government-backed initiative that mandates licensed electricity suppliers to pay households for the surplus renewable electricity they export back to the national grid. Introduced to replace the legacy Feed-in Tariff, the SEG ensures that your unused solar energy does not go to waste. For residents across London and Kent, this provides a vital secondary income stream that helps offset the initial cost of solar panel and battery storage installations. ## How do solar export tariff rates work in 2026? As of September 2026, export rates vary significantly between suppliers. While some standard tariffs offer lower rates, premium "exclusive" tariffs can reach up to 25p/kWh. It is important to note that the highest rates often come with specific conditions, such as requiring you to use the same supplier for your electricity import or having your system installed by a specific partner. When comparing rates, always check if the tariff is fixed or variable. A fixed-rate tariff provides peace of mind by locking in your earnings for 12 months, protecting you from market fluctuations. ## How can I maximise my export earnings? While chasing the highest export rate is tempting, the most effective strategy for London and Kent homeowners is often a combination of self-consumption and smart export management. 1. Prioritise Self-Consumption: Every unit of solar energy you use in your home is worth the cost of the electricity you would have otherwise bought from the grid (often 20p–30p/kWh). This is almost always more valuable than exporting that same unit for 15p–25p. 2. Invest in Battery Storage: A home battery allows you to store excess energy generated during the day to use during the evening peak, reducing your reliance on the grid. 3. Choose the Right Tariff: If you have a battery, look for "time-of-use" or "smart" tariffs that allow you to import cheap electricity during off-peak hours and export at higher rates during peak demand. 4. Check Eligibility: To qualify for SEG payments, you must have an MCS-certified solar installation and a smart meter. Ensure your installer provides all necessary documentation upon completion. ## Why does my location in London or Kent matter? While the SEG is a national scheme, your local energy profile matters. London and Kent homes often benefit from high solar irradiance, but urban density in London may impact roof orientation. Working with a local installer like Renewables For Us ensures your system is optimised for your specific roof pitch and local shading conditions, which directly influences how much surplus energy you have available to export. ## Key Takeaways - Earnings vary: Expect between 5.5p and 25p/kWh depending on your chosen supplier and contract terms. - Prioritise self-use: Using your own solar energy is generally more cost-effective than exporting it. - Check the fine print: High headline rates often require you to switch your import supplier or use a specific installer. - Ensure compliance: You must have an MCS-certified system and a smart meter to be eligible for payments. - Review annually: Energy markets change; review your export tariff every 12 months to ensure you are still on a competitive rate.