2026-05-08 · Battery · 14 min
A year with a 5 kWh battery on a small solar array
A look at the meter data after twelve months. Payback came in a couple of years earlier than the spreadsheet expected, mostly because of the tariff.
Energy Stack
Notes, write-ups and a handful of working calculators for the bit before you commit to any of it.
Topics
Panels, inverters, mounting and what the install day looks like.
14 guides →
Whether one is worth it, what size to look at, rough costs.
11 guides →
Picking a home charger, smart tariffs, getting it fitted.
9 guides →
How they work, what a sensible install looks like, the BUS grant.
8 guides →
Calculators
Built for the questions that crop up while reading a quote.
2026-05-08 · Battery · 14 min
A look at the meter data after twelve months. Payback came in a couple of years earlier than the spreadsheet expected, mostly because of the tariff.
2026-05-01 · Solar · 9 min
South-east at the front, north-west at the back. The decision came down to one specific bit of hardware.
2026-04-23 · EV · 11 min
A few months on the tariff, with bills before and after. A couple of surprises.
2026-04-12 · Heat · 17 min
Survey, radiator changes, the BUS grant. The bit that took longest was not what we had expected.