01Prices
Every seller's latest price
Sorted by price, then by the date we read it. One price type and grant state is compared; any other sits apart and says so.
Some seller links may earn FittedPrice a commission. It never changes the order: every list is sorted by price, then by the date we read it. How we make money
| Seller | Price | Type | Includes | Read | Link |
|---|---|---|---|---|---|
| 01E.ON NextTesla Powerwall 3 | £7,795 | FromNo grant | IncludesUsable capacity not stated, Capacity 13.5 kWh | Read today, 01/11/2026 | Seller site |
Read from 1 seller on 01/11/2026. How we read prices
02Index
The weekly index
The median of one price type across the sellers read in the last 14 days, week by week.
Index not started
The index needs three sellers with one price type, each read in the last 14 days, and two weeks of it to draw a line. It starts here once the weekly runs have that.
03Grants
Grants that can pay towards it
Grants differ by nation: each one says where it applies.
None of the grants we track pays towards this. Every grant we track
04Like for like
What counts as this spec
A seller's price is matched by its stated size and scope, never by price.
A battery of 12.5 to 14.5 kWh usable on its own, no panels, installed (the Tesla Powerwall 3 class). Brand, inverter type and warranty are recorded, not required. Shown as a list of sellers until three publish one comparable price type.
A price for a different size or scope is stored with the date we read it but kept off this comparison. A price after a grant is never put beside one before it without saying so.
05Questions
Home battery, 13.5 kWh: questions
- Home battery, 13.5 kWh: how much does it cost?
- Home battery, 13.5 kWh, read 01/11/2026: E.ON Next from £7,795. One seller so far, so no median yet.
- Which seller is cheapest?
- Home battery, 13.5 kWh: we cannot call any seller cheapest yet. Only E.ON Next has a from price read in the last 14 days, and we only compare prices of one type.
- Is there a grant?
- None of the grants we track pays towards this spec, in any UK nation.
- How are these prices read?
- From each seller's own website, once a week, with the date we read it. Every price says its type (from, fixed or typical) and whether a grant has been taken off. Commission never changes the order.
06Sources
Where these figures come from
- E.ON Nextread 01/11/2026
- How we read prices