Most home-energy sites are sales funnels in disguise. We're a calculator. Plug in your roof, your usage, your postcode — and see what solar, a heat pump, or a battery would actually save you. Honest maths, current grants, no nonsense.
Postcode-adjusted yield, SEG export earnings, battery uplift, 25-year payback.
Solar self-consumption uplift + time-of-use arbitrage. The bit most quotes miss.
Net install cost after the £7,500 grant, running cost vs your boiler, payback.
Home/public mix, EV-specific tariffs, honest petrol comparison.
BIK tax, NI savings, net monthly cost vs private lease.
ECO4, Warm Homes, BUS, Nest, Home Energy Scotland — what you qualify for.
Loft, cavity, solid wall, floor, draught-proofing — costs, savings, ECO4 eligibility.
Would a time-of-use tariff save you money? Models EV, battery and smart timer shifting.
Solar + heat pump + battery + EV — combined install, savings and payback.
Octopus 15p, E.On 16.5p, EDF, OVO and more. Updated monthly.
Solar quote sites tend to assume south-facing roofs, no shade, full self-consumption, and 15p export tariffs that almost no one gets. Heat pump comparison tools forget panel-radiator costs. Grant explainers don't say which schemes are closing this year.
We model the boring details — regional yield, panel degradation, battery time-shifting, grant overlaps — and we show our working. If solar isn't worth it for your roof, we'll say so.
Current install costs, SEG income, when payback breaks even, and three roofs where it doesn't make sense.
£7,500 for ASHP, £2,500 for air-to-air (new), eligibility, MCS rules, and the application gotchas.