How are you finding your system?
Just looking at the quote and chewing the cud. £10k for 13 solar panels and 2 x 2.6kWh batteries.
Which type of solar panels are you looking at and is your solar array all on the one face? You can get really decent 400+ watt panels for well under £100 per panel
Looking at your battery size I suggest it’s a bit on the small side. The average house hold uses 10kwh per day so I would suggest battery storage of at least that size to get more bang for your buck and larger if you can afford it so you can charge at 9p per kwh and sell it back for 15p per kwh, this in itself will give you an absoluteminimum of £110 per year and sold back at the right time 4pm-7pm then much more.
Fogstar do a 15kwh battery for £3,000 including VAT so £2,500
So to buy a 15kwh battery £2500 with 13 Jinko Tiger Neo 430W N-Type 54 Cell £72.50 per panel and 13 Enphase IQ8 MC-72-M-INT Microinverter @£106 you are looking at a total big item cost of £5,000. You may of course need scaffold which can add a fair bit.
The only person who got all his work done by Friday was Robinson Crusoe.
Anything i post over three lines long please assume it is an article lol.