Real
numbers
from a
real home.
One house in Hampshire, documented
Levi documents every solar, battery, heat pump and EV decision on one Hampshire house, so you can make yours with real data. No sponsors. No affiliate links.
What the panels
made.
Real readings from the Hoymiles S-Miles Cloud, 5-minute data added up by hour · Snapshot 11 Oct 2026
No export tariff on this home yet, so export earnings aren't shown. Import on Intelligent Octopus Go. Full system
(01)Non-sponsored
Owner experience, never promotion. Nothing on this site is paid for by a brand or installer, and every product shown was bought with Levi's own money.
(02)Data-driven
Real kWh and real bills from one UK home, with sources and dates on every claim. When prices or rules change, the page says so.
(03)Independent
Deep, long-term coverage of the Hoymiles HiOne battery, which few UK creators test, alongside the solar, heat pump and EV running beside it.
Fig 3.A — Plays from YouTube when you press play
Why I'm Getting Solar, a Battery AND a Heat Pump
- (A)12.25 kWp of solar across the south and west roofs
- (B)24 kWh of Hoymiles HiOne battery storage
- (C)A 9 kW air source heat pump replacing the gas boiler
Where is your home today?
No solar yet
Is it worth it for your roof and your bills?
Solar only
Use more of what you make. Is a battery next?
Solar + battery
Tariffs, charge windows and export events.
Solar + battery + EV
Smart charging and running the car on sunshine.
Plug-in solar
Balcony kits up to 800W, and the rules changing in 2026.
Plug-in Solar Savings Calculator
Should you put a balcony kit up? A quick answer from three inputs. Plug-in kits are limited to 800W under the proposed UK rules.
06.The
Build
One house going all-electric. Installed 10 September 2026 by JEM Energy, Fleet. See the full system
01.Solar array
25 × 490W Aiko Neostar panels, south and west roofs, Tigo optimisers
02.Battery
3 × Hoymiles HiOne with a 12kW Energy Controller
03.Heat pump
Grant Aerona R290 air source. No gas boiler
04.EV charger
Zappi on Intelligent Octopus Go
- Summer 2026 · Done
Quotes, design and G99 application
- 10 Sep 2026 · Done
Main install by JEM Energy, Fleet
- Oct 2026 · Now
First month of data and battery tuning
- Winter 2026 · Next
Heat pump through its first cold season
The numbers, monthly.
One email a month: what the system made, what it cost, and what changed in UK rules and tariffs.
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