Work out what plug-in solar actually saves at your address, not a national average.

Enter your postcode, tariff and usage. We model your local solar yield month by month, size a battery against it, and rank real plug-in solar kits by payback time — not marketing copy.

Run the calculator ↓ See ranked kits
10 yrwarranty window modelled
12months of solar yield, by latitude
£/kWhscored on real payback, not RRP
1postcode lookup, no signup
01 — Your home

Tell us where you are and what you use

Every field pre-fills with a sensible UK default so you can see a result immediately — then refine it with your real numbers for an accurate figure.

1Your home
2Select your kit
Battery charges fully off-peak, then covers demand that would otherwise cost the day rate.
Advanced settings
Saving
£— /mo
Payback
—
Your selected kit: —
Get this kit — 10% off with our link →
System cost (10% off)
£—
Year 1 saving
£—
10-YR NET SAVINGS
£—
Solar self-use rate
—%
Estimated generation for your postcode's latitude, spread across a typical UK monthly solar profile. Self-consumption assumes ~35% of your demand overlaps with daylight hours before the battery is added, then the battery banks the rest of the day's surplus for evening use.
02 — Ranked for your home

Every plug-in solar package, scored on your numbers

Defaults to 10-year net saving per £1 spent (highest first) — use "Show" and "Sort by" below to filter to solar-only, battery-only, or full kits, and reorder by whichever matters most to you.

How we make money: TheSolarPlug is free to use. If you buy through the links above we may earn a referral reward from the retailer at no extra cost to you — in fact the linked code currently applies a 10% discount to your order. As an Amazon Associate we earn from qualifying purchases made through "Buy on Amazon" links. None of this changes the ranking above, which is ordered purely by the savings model, not by commission.
03 — Or build exactly what you want

Build your own package

Pick any mix of batteries and panels — the totals and savings update live using the same model as the ranked list above, so you can compare your own combination on equal terms.

Batteries
Solar panels
£—Total cost (10% off)
—Solar capacity
—Battery storage
—Est. payback