Places · Case file
Growatt for a EV household in Brighton
Updated
The car and the Growatt will want the same cheap hours in Brighton. Decide which load is fed first, or the Brighton payback for Growatt is fiction.
Growatt on a EV household in Brighton
Regency conversions stop more jobs than the price of the cells. Ask the freeholder before you fall in love with a cabinet, which is the constraint I would write next to Growatt for this EV household.
UK Power Networks covers this Brighton example. A 4 kWp-class roof at 1030 kWh per kilowatt is about 3,090 kWh a year before shade, and Growatt does not change that weather.
Money for Growatt for a EV household in Brighton
Take a 5 kWh pack, cycled about 280 times, at 90% round trip. Charge at 7.0p, and value what comes back at 27.2p. Export given up is priced at 6.0p. There are no panels beside this 5 kWh pack, so every unit charged comes off the grid. Delivered energy is about 1260 kWh. After charging cost and lost export, the sketch saves about £245 a year. Set that against £3,942 fitted, which is a September 2026 illustration at the temporary 0% residential rate, not a quote. That is a simple payback of about 16.1 years, which is past a typical 10-year warranty. Nudge the night rate up by 4p and see if you still like it.
Where the job is a qualifying install in a home, the 0% rate runs to 31 March 2027 and is due to become 5% after that. This sketch prices the work at £3,942 on that basis. It does not apply to a shop, and it does not apply to a battery you buy and fit yourself.
Connection for Growatt for a EV household in Brighton
In Brighton, on UK Power Networks, 3.6 kW is in the band where G98 connect-and-notify is often enough. Export can still be capped. Agree that before the inverter is ordered. The sketch uses 5 kWh and 0 kWp, which is enough to tell two quotes apart if they assumed something else.
In Brighton, the weak case for Growatt is simple: Buyers who will have no local support if the installing company is a short-lived lead-gen brand.
Would I proceed with Growatt for a EV household in Brighton?
I would not compare a £3,942 headline with another until usable kWh and the fate of any existing inverter match.
I would proceed on Growatt for a EV household in Brighton only after the cupboard, the 3.6 kW connection route and the tariff gap are written down.
Common questions
Is the price on this page a quote?
No. £3,942 is a September 2026 illustration for a 5 kWh example at the temporary 0% residential rate. Your survey replaces it.
Will it stay on in a power cut?
Only if a gateway or essential-load board was designed and paid for. A standard grid-tied battery turns off with the grid. On this 5 kWh sketch the inverter is 3.6 kW, and backup is still a separate line.
What paperwork should I keep?
Keep the MCS certificate where the job is certified, the electrical certificate, the DNO record, the schematic, the warranty registration and a photo of the schedule. For an illustrated £3,942 job, that folder is part of what you bought.
What if the cheap rate is not 7p?
Then the sketch changes. This page used 7.0p as a charge rate and 27.2p as the rate avoided. A smaller gap means a worse payback. Read the live tariff.
Sources
Want a price for your house?
The figures above are a rough guide. An installer still needs to see your fuse board, where the battery will go, and whether you want power during a blackout.