What paperwork does a solar pv installer in the UK have to keep?

MCS installation certificate, EIC, G98/G99 notification. MIS 3002:2025 and BS EN 50549 for grid connection.

Is there an app for solar pv installers that works with no signal?

Yes. Simplogic for gas & electrical fills in on the phone at the job, works with no signal in a loft or boiler cupboard, and syncs when the signal returns.

For solar pv installers

MCS and the electrical side in one write-up

Fill it in at the job, on the phone, while you're stood there. The certificate, the invoice off the same visit, the photos. By the time you're back in the van it's written up and filed.

MCS installation certificate, EIC, G98/G99 notification — the forms you actually issue, not a generic template
Works with no signal, in a loft or a boiler cupboard, and catches up later
The invoice comes off the same job, with your payment link on it

The app on a phone: a CP12 landlord gas safety record being filled in by voice, three fields of twenty done. — The write-up as it happens at the boiler: spoken in, field by field, twenty fields to a finished CP12. It works with no signal and sends itself when you get one.

Start free →30 days free. No card to start.

What a solar pv installer has to comply with

MIS 3002:2025 and BS EN 50549 for grid connection. There's a public reference for solar pv installers — free, no sign-up.

What applies to a solar pv installer

What it costs

30 days free to start, and no card until you decide. If you keep it:

Sole Trader£29/monthOne engineer, working for themselves. £290 a year — two months free.

Plus (Most features)£49/monthA growing trade business. £490 a year — two months free.

A mate or apprentice works under someone else’s registration, so there’s nothing here to charge for. So the mate tier is free.

Not a solar pv installer?

Find your trade — every trade, what applies to it, and which package answers it.