01
Law status board
Where UK plug-in solar stands right now — updated the day anything moves.
Status · verified 22 Jul 2026
True plug-and-play DIY kitNot legal yet
800W hardwired (CPS electrician + free G98)Legal today
SI 2026 No. 848 (≤800W + IPS v2, in force 27 Aug 2026)Law made 16 Jul 2026
—days until plug-in solar becomes legal (27 August 2026)
Two kinds of email. Nothing else.
One email when devices change status on the ENA type test register, never more than one a week, and one on the day the law changes. Nothing else.
No spam, no weekly newsletter. Register changes and the legal go-live, nothing else. Unsubscribe anytime.02
Before / After
The whole idea in one picture: same balcony, one panel added — your flat uses the free solar first.
Before100% from the grid · ~27p/kWh
→
After≈600–900 kWh/yr → saves £130–£200/yr
03
What would your balcony make?
Rough number in five seconds. The full calculator does orientation, price cap and payback.
Two sliders. That’s it.
Model: UK yield ≈0.9 kWh/W/yr × exposure, valued at the ~27p/kWh cap, self-consumption only (no SEG).
Estimated saving
£—
per year, at the current price cap
≈ £— over 10 years
panels last 20+ years · typical payback 3–4 yrs
🌍 — kg CO₂/yr avoided (≈— trees)
☕ — cups of tea
🔋 — phone charges
every kWh you make is a kWh you don’t buy — whatever the price cap does next
Full calculator →
04
Everything, in its place
Every guide on this site, filed under exactly one of five drawers. No hunting.
§1
Legal & rules
§2
Install & G98
§3
Kits & gear
Editorial principle
We never publish “just plug it in, fully legal now” copy. Spotted a change in the law? Tell us — we update.