Plug-in solar panels in Southampton
Three things change depending on where you live: who you notify, how much the panel actually makes, and who has to say yes first. Here are all three for Southampton.
In Southampton you notify SSEN Distribution
SSEN Distribution · Southern England licence area
Your network operator is fixed by your postcode. You cannot choose it and switching electricity supplier does not change it. Great Britain is divided into fourteen licence areas, and Southampton falls in the Southern England licence area.
SSEN runs two areas at opposite ends of the country, southern England and the north of Scotland. Yours is the southern one.
G98 notification is not optional and it is not the same thing as telling your supplier. It is a short form, it is free, and the QR code on your kit links straight to the right one. Do it before you connect, not after.
What 800W realistically makes in Hampshire
These are irradiance model figures for 800W of panel, not measurements from a roof down the road. Treat them as a ceiling you will fall short of rather than a target.
820 kWh
Per year, south facing, angled properly on a garden frame or flat roof with nothing shading it.
510 kWh
Per year, mounted flat against a south-facing balcony railing. The convenience costs you output.
25–60%
The share you use as it is generated. The rest goes to the grid for nothing. Being home in the day is worth more than a bigger kit.
This is among the sunniest parts of the UK, roughly on a par with Brighton. If a plug-in kit is going to make financial sense anywhere in Britain, it is here.
Two panels on one 800VA inverter. The sweet spot for a typical home's background load, and the largest output the rules allow.
Housing stock in Southampton
Southampton has good suburban stock in Bitterne, Shirley and Portswood with usable gardens, plus a growing waterfront apartment market at Ocean Village and Centenary Quay where balconies face south over the water.
Parts of the city and much of the surrounding area sit within or near the New Forest National Park, where permitted development rights are tighter. Check which authority covers your postcode before assuming.
Permission questions locally go to Southampton City Council, or Eastleigh and New Forest nearby, though for a freestanding panel in a private rear garden you are usually dealing with a lease or a landlord rather than a planning officer.
The national rules apply here as everywhere
800VA cap, one device per household, certified complete kits only, no batteries. Full explainer →
Straight answers
Which DNO do I notify in Southampton?
SSEN Distribution, in its Southern England licence area. G98 notification is mandatory before you connect a plug-in solar kit, and it goes to your network operator, not your electricity supplier.
How much electricity will a plug-in solar kit make in Southampton?
n 800W array in Southampton models at roughly 820 kWh a year at optimal tilt, or around 510 kWh flat against a vertical balcony rail. You only save money on the share you use as it is generated.
Am I inside the New Forest planning area?
Parts of the surrounding area are, and permitted development rights are tighter inside the National Park. Check which authority covers your postcode before you assume the city council rules apply.
Kits that ship to Southampton
Every kit is certified as a complete product, ships free, and comes with the G98 notification link for SSEN Distribution. Use SSEN Distribution here and it fills in the local operator.
Kits available from 27 August 2026
That is the date SI 2026/848 comes into force and plug-in solar becomes legal to self-install in Great Britain. Certified kits are listed here as soon as they are available.
See all kitsShips to England, Wales and Scotland. Northern Ireland sits outside SI 2026/848, so we cannot supply plug-in kits to NI addresses.