Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Solar diverter
Hi all
When we had our solar PV panels installed in May a solar diverter was not mentioned to us. I am not sure whether this is because we hope to install a Tesla Powerwall once it is supplied (likely to be 2023). Anyway - the engineer who serviced our ASHP asked why we hadn't installed one and I replied that it hadn't been offered and, in truth, I didn't know about them.
The solar PV installer would now charge us an eye-watering £4,000 to install a solar diverter. This seems a long way from the prices quoted on line. eg https://www.solarpanelprices.co.uk/articles/solar-panels/solar-pv-diverter-explained/ - which suggests that we may need to pay up to £800 for installation.
What are your thoughts on the above. I'm not going to pay £4,000 for a solar diverter installation but I wondered if anyone could explain why the cost quoted might be so high? Is is because it wasn't installed in tandem with the PV panels?
Is it worth getting a solar diverter if we have a battery coming our way in 6 months time (we hope). ??
Posted by: @jennyrossHi all
When we had our solar PV panels installed in May a solar diverter was not mentioned to us. I am not sure whether this is because we hope to install a Tesla Powerwall once it is supplied (likely to be 2023). Anyway - the engineer who serviced our ASHP asked why we hadn't installed one and I replied that it hadn't been offered and, in truth, I didn't know about them.
The solar PV installer would now charge us an eye-watering £4,000 to install a solar diverter. This seems a long way from the prices quoted on line. eg https://www.solarpanelprices.co.uk/articles/solar-panels/solar-pv-diverter-explained/ - which suggests that we may need to pay up to £800 for installation.
What are your thoughts on the above. I'm not going to pay £4,000 for a solar diverter installation but I wondered if anyone could explain why the cost quoted might be so high? Is is because it wasn't installed in tandem with the PV panels?
Is it worth getting a solar diverter if we have a battery coming our way in 6 months time (we hope). ??
Hi Jenny,
The quote of £4000 is a total rip-off.
You can purchase a solar diverter online, the prices range from I think £200 to about £500. If you know a friendly electrician, they should be able to install it for probably a couple of hundred pounds.
Yeah thats insane. I've got a Solic, new they are £215 for the basic one. Then you would need an electrician for probably half a day of wiring. £400-500 installed TOPS if you have an expensive electrician. Honestly if you have an immersion and the wiring is simple and easy to reach its probably more like 2hrs work
https://www.earthwiseproducts.co.uk/shop/
@derek-m many thanks for your advice. Yeah - I was really shocked when I saw the price - which was a quick response to my email to him, ie no breakdown of what that comprised. When I went back to the company to see if he had added an extra zero by mistake he simply replied that the £4,000 was correct and that it was labour and 20% VAT.
I feel that I can't be rude to the guy as he's the boss of the company and it's one of the few in Fife, where I live, which seems to have a good reputation. Plus they have our battery on order and I want it installed without any trouble.
I guess they are over-busy and just don't want the work. Very disappointing to be ripped off by a company that has had so much business from us over the years.
@batalto many thanks. I've just replied to Derek above re my thoughts on this. But thanks for the advice. Much appreciated.
@jennyross any electrician can fit it for you. You don't need any particular skills, its a single CT clamp (I think) and thats about it.
Posted by: @jennyross@derek-m many thanks for your advice. Yeah - I was really shocked when I saw the price - which was a quick response to my email to him, ie no breakdown of what that comprised. When I went back to the company to see if he had added an extra zero by mistake he simply replied that the £4,000 was correct and that it was labour and 20% VAT.
I feel that I can't be rude to the guy as he's the boss of the company and it's one of the few in Fife, where I live, which seems to have a good reputation. Plus they have our battery on order and I want it installed without any trouble.
I guess they are over-busy and just don't want the work. Very disappointing to be ripped off by a company that has had so much business from us over the years.
What I find quite disgusting is that in the middle of an energy crises you have companies trying to take advantage and rip off their loyal customers, selling their services to the highest bidder. If they are too busy then they should just say so, not try to rip people off.
@jennyross, that’s shocking. It’s terrible that companies are trying to rip homeowners off. The bulk of that figure is labour. Ha! How many people for how many days to fit a diverter. Give me a break.
New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained – use AUDIO50 at checkout for 50% off.
I bought the parts from Robin and had it working in no time. It looks a bit daunting at first but it all comes together quite nicely. Cost for parts about £150.
@jennyross It does seem a lot. I'm a very-basic DIYer but installed an I2 diverter myself in an hour or two, cost c£200. I placed it between the existing switch and the immersion - effectively it's just a second switch, terminals standard LNE both ways, plus a run of bell wire connecting the unit to the draw sensor on the cable into the house (this determines which way current is running). Probably best to get a pro in if you're not confident, but not a £4000 job in my amateur opinion!
@derek-m Nope - we didn't. I lost the will 😫 Since July I've also been applying for the SEG and I'm almost losing the will there too. Honestly between electrical companies, power companies and the government I feel like a pawn on a chess board.
- 27 Forums
- 2,736 Topics
- 64.3 K Posts
- 1,342 Online
- 7,142 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Indevolt Batteries UK Support & Info Thread
You'll have to excuse me, this is all new to me and I s...
By BlizzardGreen , 9 hours ago
-
RE: PV and battery long payback - sense check query
@old_scientist I have now drafted 2 replies - both have...
By DavidB , 13 hours ago
-
Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Helping a family member with brand new installation of ...
By Chris66 , 18 hours ago
-
RE: Can I start an argument about buffer tanks please? 🙂
Assume flow from the heat source is higher than flow to...
By bobflux , 22 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
By Adrian , 1 day ago
-
RE: Acond heat pump failed after four years - diagnostic quote £940 plus VAT
@downfield Thank you Downfield. This sounds potenti...
By Mia , 2 days ago
-
RE: Digest of UK Energy Statistics
@jeff Yes my brother in Oz told me of that charge year...
By Jancold , 2 days ago
-
RE: Love veg, hate watering cans
My dear daughter came for a bath and was given clear (I...
By Jancold , 2 days ago
-
RE: Questions about A2A for heating as well as cooling
@ashp-bobba ah that's good to know, I'll get in contact...
By donciccio , 2 days ago
-
RE: Aircon - in listed buildings
@etchedpixels thanks for giving such a full and helpful...
By GrahamF , 3 days ago
-
RE: Who's your electricity provider and what's your tariff?
@old_scientist The service engineer powered down the ex...
By Papahuhu , 3 days ago
-
RE: Issue with Samsung Cascade System
@jamespa It's a funny system, but was out only option l...
By Renewables345 , 3 days ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Thanks, I like the chart, very helpful and this will de...
By baroquebank , 4 days ago




