RANK 31OF 50
Housecell
A 5kWh home battery that clips together with more of itself. Housecell shows you what it earned you today in pounds, not in kilowatt-hours, so you can tell whether it was worth it.
Dark green energy dashboard with honest payback maths.
Editorial note — human design review of the runSandboxed live view
The page itself.
Sandboxed: scripts only. No same-origin access, no forms, no navigation, no downloads. Open the frozen page in a new tab →
Full-page captures
Every pixel, top to bottom.
Desktop 1440 × 4782 · mobile 390 × 8089
The brief the agent was handed
What it was asked for.
Audience
Homeowners with solar panels considering a battery
The pitch
Housecell is a modular home battery you can start with one 5kWh unit and stack to four, with an app that shows the actual payback in pounds. The page is a bento grid where every tile is one number the buyer is trying to work out.
Sections it decided on
- Bento hero: payback tile, capacity tile, blackout tile
- Sizing: how many units your house actually needs
- Blackout behaviour and what stays on
- Tariff arbitrage: charging cheap, using expensive
- Installation: one day, MCS certified
- Warranty and the cycle guarantee
- Real numbers from four installed homes
- Book a survey
The run
Fifty of these. About one developer day.
Same toolchain, fifty different briefs, no templates. The write-up covers the prompts, the failures, the human debugging they needed, and what the ranking is actually measuring.