Honest, or nothing.
Solar.day answers one question: does solar actually make sense for your home? Not for the average home. Not for the home an installer wants you to have. Yours. We rank four routes – rooftop panels, rooftop with a battery, a battery on its own, and the new plug-in kits (£849 today, and expected to fall as the market scales) – and if none of them stacks up, we say so. 'Not yet' is a real answer here, not a failure.
We're not anti-solar. The opposite – done right, it's brilliant, which is why it deserves honest arithmetic instead of a brochure.
Every number is sourced and dated. Self-consumption comes from the MCS tables an installer is required to use. Costs come from the government's own installation data. The plug-in figures come from the DESNZ impact assessment behind the law change. When we estimate, we say we're estimating.
No installer commissions, no supplier deals, no lead selling. Nobody pays us, and nobody edits our numbers.
Solar.day is built by Mat Moakes as part of the Green But Not Heard project – a book and a set of tools arguing that the energy transition has a marketing problem, not a technology problem. The book is out now; the tools are free either way.
Who's behind this
I'm Mat Moakes. I wrote Green But Not Heard, a book about why net zero keeps losing arguments it should win, and I built Solar.day because the questions people actually have deserve a straight answer.
I work at one of Britain's largest energy companies, so Solar.day names no supplier, tariff or installer, and nobody pays to be here.
Built in a personal capacity. The views are mine, not my employer's.