Everything you need to know about plug-in solar panels in the UK - legality, costs, savings, renters' rights, and more.
In England, not under permitted development. The Town and Country Planning (General Permitted Development) (England) (Amendment) Order 2026, SI 2026/896, in force 27 August 2026, removes permitted development for plug-in solar where any part would be installed on a wooden wall, balcony or enclosure, or on any part of the exterior clad in timber. A matching exclusion covers wooden fences, gates and other enclosures for stand-alone kits. This is not a ban: it means a planning application rather than an automatic right, and planning is devolved so the order does not apply in Scotland or Wales. Full detail, including what to do if your balcony is timber, is in can I put plug-in solar on a wooden balcony?
Yes. Plug-in solar became legal on 27 August 2026, when SI 2026 No. 848 came into force alongside EREC G98 Issue 2 Amendment 1, which Ofgem approved on 11 August 2026. DESNZ had confirmed the legalisation via a written ministerial statement on 15 March 2026, BS 7671 Amendment 4 (published 15 April 2026) authorised a standard-plug connection up to 800W AC, and the DESNZ Interim Product Specification was published as v2.0 on 16 July 2026. A kit shown as Compliant on the ENA G98 Type Test Register may now be plugged into an ordinary 13A socket and self-notified to your network operator afterwards. No electrician and no prior permission are needed. one hundred and nine kits from twenty-four manufacturers are listed as Compliant and 20 of them are on sale.
Yes, since 27 August 2026, provided the kit shows as Compliant on the ENA G98 Type Test Register. You mount the panels, connect the microinverter, plug it into an ordinary 13A socket, and send your network operator a G98 notification afterwards. There is no electrician to book and no prior permission to seek. A kit that is not on the register still needs a hardwired connection by a CPS-registered electrician. The full status of each standard is on the BSI 2026 Plug-In Solar Tracker, with primary-source citations and dated entries.
In most cases, no. Small balcony installations fall under permitted development. Exceptions: listed buildings, conservation areas, and some leasehold properties.
Your DNO manages local electricity cables. At 800W you're under G98's 3.68kW threshold - "fit and notify within 28 days." UKPN covers London/SE, NGED the West Midlands, NPG the North East, SSEN Scotland.
The cheapest kit on the ENA G98 Type Test Register is £336, a 940W kit from City Plumbing, and 20 approved kits are on sale from 109 listed as Compliant. EcoFlow STREAM kits are widely sold but are not on the register, so they cannot be plugged in and self-notified. Browse available kits on our products page.
Our model puts a south-facing 800W system at about £124 a year at the Ofgem cap of 26.11p/kWh, which applies from 1 July to 30 September 2026. The cap rises to 26.32p from 1 October 2026. The actual figure depends on how much solar you use directly versus export to the grid. Shifting appliances to daylight hours lifts your self-consumption and pushes you toward the upper end. Try our savings calculator for a personalised figure, or read how we calculate the estimate to understand the assumptions.
About 3.5 years at the £336 price of the cheapest approved kit and a modelled annual saving of about £124. After that, 15 to 20 years of effectively free electricity.
Potentially via the Smart Export Guarantee. Early UK kits focus on self-consumption - the financial case is built on offsetting grid usage, not export income.
Yes. Under the Renters' Rights Act 2025, landlords cannot unreasonably refuse a portable system with no structural impact. Notify your landlord in writing. Take it with you when you move.
Aesthetic preference alone isn't reasonable refusal. Ask for written grounds. Citizens Advice can help you exercise your rights under the Act.
800W (two 400W panels) covers most base loads. A single 400W panel works if space is limited. Different-facing panels need a dual-input microinverter. See our full guide for detailed setup recommendations.
Yes. Panels generate from daylight, not direct sun. London: ~760 kWh/year. Edinburgh: ~704 kWh. UK irradiance matches northern Germany, where 1M+ balcony systems operate. Shading matters more than clouds. Learn how we track the sun position to calculate accurate performance for your location.
No. Mandatory safety shutdown prevents backfeed while engineers work on the grid. Backup power requires a separate battery with islanding capability.
25-year warranty typical. Degradation under 0.5%/year. Microinverter replacement after 10–15 years costs £60–£120.
Now that approved kits are on sale, a system listed as Compliant on the ENA G98 Type Test Register should be covered by standard home insurance. You must disclose the installation, because failure to do so could void a claim.
The best defence is a layered approach that reduces how much energy you need, shifts when you use it, and generates some of your own. Here's a practical four-layer strategy:
Layer 1 - Reduce your baseline demand. Switch every bulb to LED (saving 80–90% on lighting), replace old appliances with A-rated models, and identify your biggest consumers (usually electric shower, tumble dryer, and electric oven). Reducing what you use is the only protection that costs nothing ongoing.
Layer 2 - Shift your load to cheaper times. Run your dishwasher, washing machine, and EV charger overnight on an Economy 7 or Agile tariff, or during solar peak hours (10am–3pm) if you have panels. Load shifting can cut a typical household's energy bill by 15–25% without spending a penny on hardware.
Layer 3 - Generate your own electricity. A plug-in balcony solar system (400 to 800W) produces 500 to 900 kWh a year, enough to offset your fridge, broadband router, lighting, and laptop for free. At the Ofgem cap of 26.11p/kWh that is roughly £130 to £235 off your annual bill, and our model puts a south-facing 800W kit at about £124 a year with a payback of roughly 3.5 years. Crucially, self-generated units are completely insulated from price cap rises once the kit is paid off.
Layer 4 - Add storage and a smart tariff. A home battery (or an EV with vehicle-to-home capability) lets you store cheap overnight electricity and use it at peak prices. Combined with a smart tariff like Octopus Agile, sophisticated households can buy electricity at near-zero cost during grid surplus periods and export it back (via SEG) during demand peaks. This is the highest-effort layer but can reduce net energy costs by 40–60% for households who engage actively.
Most households will get the best return from Layers 1–3 before investing in storage. Start with LEDs and load shifting (free), then add a balcony solar kit that shows as Compliant on the ENA G98 Type Test Register, which you plug in and self-notify yourself. A CPS-registered electrician is needed only for a kit that is not on the register.
Approved kits are now on sale from £336. Get your personalised savings estimate to see how much you could save.
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