How we get to our numbers

Our calculators use straightforward arithmetic on the figures you enter. They do not model weather variation, half-hourly consumption profiles, future energy prices or the specific behaviour of your equipment. That keeps the workings transparent, and it also means the output is an indication rather than a prediction.

Simple payback ignores the time value of money, finance costs, inflation, panel degradation, maintenance and eventual component replacement. It is a useful first filter, not a full financial appraisal. Nothing on Housebright is financial advice.

Housebright does not sell placement in editorial conclusions. If and when we list or compare installers, the ordering will be based on stated criteria published alongside the list, and any commercial relationship will be disclosed on the same page.

We do not accept payment to change a recommendation, to remove a caveat, or to describe a technology as suitable for homes it does not suit.

Support schemes differ across England, Wales, Scotland and Northern Ireland, and they change. Where we mention a scheme, we state which nations it applies to, the amounts as published, any end date, and the month we last checked it.

Always confirm the current position with the official source before making a financial decision. We would rather you checked us than trusted us.

Housebright does not install equipment, does not employ installers, and does not currently operate a quote request service. If we introduce one, the page will say plainly what happens to your details, who receives them and what we are paid.

We will never run a form that implies your details are being sent to installers when they are not.

If something here is wrong or out of date, we want to fix it rather than defend it. Where a dated official source is newer than our page, the official source wins. Our corrections policy is set out on the contact page.