Solar panel quote check

bottomsforever

Hi all

Like many I'm considering solar panels and I was hoping some of the experts around here could help me move forwards with a reasonable course of action.

I've been quoted £12.8k for the following:

1) 10 505w Trina black panels, six on S-facing roof, 4 on flat roof angled in solar bins
2) K2 solar mounting system + 4x solar bins
3) Solis 3.68kw hybrid inverter
4) All cabling and isolators
5) Pylontech 7kW battery storage
6) Solar iBoost
7) Commissioning and certification

Thoughts please? I will getting additional quotes but for a few reasons, I like the way this company does business.

My consumption from November until now has been 297KW per month to 340, with an average of about 315

I WFH so am home a lot during the day, every day (apart from weekends when we are out a lot as a family. My wife and I are happy to change habits to reduce pay back period.

As well as the reasonableness of the quote, I'm also weighing up battery v not battery at the moment. I'm doing a lot of research but I'm struggling at the moment on how much a battery defrays grid usage during the winter months.

Many thanks to anyone in advance who is able to advise me.

[Deleted User]

You will get a response if you re-post in this forum:

https://forums.moneysavingexpert.com/categories/green-ethical-moneysaving

If you are hoping to get SEG payments from Octopus, your installation must come with MCS Certification.

bottomsforever

Thank you for signposting me, Dolor. I will do that.

Petriix

Those Trina panels cost £151 each (ex VAT, which your system will be), the batteries (assuming 2x us3000) are ~ £1k each, the inverter is about £700 and iboost £350 with at most £500 on accessories. That's ~ £5k on materials.

Let's call it £1k for scaffolding, £100 towards the van, £200 each day rate for two workers and £500 towards other company overheads. It's about £5k in pure profit you'd be generously donating to the company.

You might find cheaper elsewhere if you shop around, but demand is so high right now it's basically a disfunctional market. My advice is to not bother unless you can get similar for under £10k and probably closer to £8k.

[edit: and think carefully about the iboost: you're likely to earn more in SEG payments than you save by heating water.]

Officer_Dibble

I'd echo Petriix's comments about the iBoost - pointess at the moment if you've got gas. We pay under 5p/kWh at the moment on tracker to heat the water with gas while exporting electricity at an average of 27.8p/kWh using Octopus Flux. Using gas rather than immersion heats the towel rails too as a bonus!

As for the quote, that's more than 50% more than I paid for a similar system not much more than a year ago (though without the solar bins complication). I'm very happy we went with the battery, but it depends how much it's adding to the cost of the system as to whether it's worthwhile financially.