EDF announced on 13 November 2025 a limited time discount of up to £1,000 on solar panel, inverter and battery systems bought from it, available until 23:59 on 23 November 20251. The reductions are £1,000 on systems of 7kW and above, £750 on 5-6kW systems and £500 on 2-4kW systems1.
The 7kW system, usually priced at £10,095, includes 15-16 solar panels, a 7kW inverter and a 5.32kW battery, which EDF says would suit a three to four-bedroom home depending on roof size and orientation1. EDF states the 7kW system could deliver savings of up to £1,825 on energy bills in the first year and 1.6 tonnes of carbon emissions, which it compares to a return flight from London to Los Angeles1. The 5-6kW system typically starts from £8,995 and the 2-4kW system from £7,3951. A 2kW system, with 4-5 panels, a 3.6kW inverter and a 5.32kW battery, could save a household £733 on electricity bills in the first year, alongside 500kg of carbon emissions, which EDF compares to a return flight from London to Antalya1.
| System size | Discount | Typical starting price |
|---|---|---|
| 7kW and above | £1,000 | £10,095 |
| 5-6kW | £750 | £8,995 |
| 2-4kW | £500 | £7,395 |
All combinations of solar and battery installations benefit from 0% VAT, which EDF notes is temporary and due to expire on 31 March 20271. New customers buying any combination of solar panels, inverter and battery with EDF could also reduce their electricity bill by £800 on average on the Empower Exclusive tariff, which is available only to new EDF customers who install such systems with EDF1. That tariff offers three hours of discounted, zero carbon electricity nightly from 1am to 4am, no standing charge for the first year, no exit fees and an export rate of 24p per kWh1.
Philippe Commaret, Managing Director of Customers at EDF, said:
"We know many households are looking for practical ways to lower energy costs and their environmental impact. Installing solar panels and battery storage is one of the most effective ways to achieve both."
EDF's wholly owned subsidiary Contact Solar carries out the installations and is certified by the Microgeneration Certification Scheme and TrustMark1. The savings figures are based on October 2025 Standard Variable Price Cap rates and depend on household consumption patterns; EDF's worked example assumes a household of two to three people with 10-12 panels and 2,700 kWh of consumption1. Eligibility terms and conditions are published separately and have not been reproduced here1.
Why it matters for households
A discount reduces the upfront cost of a system, which is the point at which a household's exposure to grid prices begins to fall. The size of the reduction scales with system size, so the largest cut applies to the largest system. The running economics depend on more than the purchase price: the tariff attached to the installation sets the import rate for overnight battery charging and the rate paid for exported electricity, and EDF's 24p export rate applies only to its Empower Exclusive customers1. The 0% VAT relief that applies to the installation is time limited and expires on 31 March 20271. EDF's own research, conducted across 2,000 adults in July 2025, found that 64% see cost as a barrier to installing solar, while 44% plan to install panels in their current home1.
What happens next
The discount ends at 23:59 on 23 November 20251. The 0% VAT relief on solar and battery installations is due to expire on 31 March 20271.