Solar together - infinity renewables
@burtis we don't know how many PV panels can be fitted on your roof.
You might be able to estimate it if you know the size of your tile/slates.
The majority of panels are about the same size: 1.0 x 1.6m
And the output is also becoming very similar across manufacturers:
Voltage will be in the mid-thirties (32-38v ish)
and current will be between 11-14 Amps.
The majority of inverters have a similar voltage range which is 'acceptable' for a string of panels to be connected:
Anywhere from around 150v to 450v will usually allow the MPPT peak-power tracking system to work
So if your roof can support a significant number of panels (as mine can), then you need them divided into separate strings which present a sensible output voltage towards the top end of the range.
Save energy... recycle electrons!
LookIng at my local area all houses are the same basically. Old council lots.
Most have 14 panels on the roofs they are quiet old though so maybe newer ones are larger (some have 10 probably because of shading from a neighbour by the looks to the hill and steps)
I have no idea about any of this just thought ahhh seems like good value and I don't plan on moving so get it on the roof earlier rather than later 😅
Should probably keep the money aside to sort the heat pump out though if that all goes tits up
What will have changed over the years will be the power output of those PV panels.
5 years ago a 'standard' 1.0 x 1.6m panel would be producing around 250-280w peak.
2 years ago that would be 360w
Now you can get 460w
So you can achieve a lot more electricity from the same-sized roof area.
Another thing which installers sometimes forget is that the panels don't mind if they're arranged vertically or horizontally on the roof.
If you look around, you can find houses with roof space wasted because more panels could've been fitted if they'd been placed horizontally.
Sometimes the panels manufacturers stipulate that the fixing-clamps must be on the long-edge...
... but there are vertical-oriented roof-rails which can be fitted if that's the case.
The cost of the installation work itself is now such a major part of the overall price that there are unlikely to be better deals if you wait until later.
Even if you negotiated a further 10% off the price of the panels themselves, it would make negligible difference to the final bill.
Save energy... recycle electrons!
- 22 Forums
- 2,074 Topics
- 45.4 K Posts
- 51 Online
- 3,350 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: What’s the modern take on advised types of insulation?
Grant was my local MP before he lost his seat. He was...
By Jeff , 6 hours ago
-
RE: 5 Star Service from Havenwise
Thank you for tagging me @editor ! And thank you for th...
By HCas , 7 hours ago
-
RE: Radiators downstairs are cooler at the bottom after ASHP install
@melonbuffet This is great assuming now the down stairs...
By ASHP-BOBBA , 9 hours ago
-
RE: Commencing on an ASHP Installation Process
@jamespa Thanks for your input into this thread so far....
By Sheriff Fatman , 9 hours ago
-
Pacific Blue reveals ageing Codrington Wind Farm decommissioning plans.
Australia Blue, the first wind farm in Western Victoria...
By Morgan , 10 hours ago
-
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy
The challenge is who pays, who holds the debt and the i...
By Jeff , 15 hours ago
-
RE: Flow rate discrepancy between ASHP and manifold
That's useful thanks, I hadn't seen that table before. ...
By AshRolls , 1 day ago
-
In principle I agree, @johnmo, but with provisos. The...
By Majordennisbloodnok , 1 day ago
-
RE: Heat pump installation and BUS Grant timings
@jamespa Thats how I understood it too. 🙂
By ASHP-BOBBA , 1 day ago
-
RE: Antifreeze top up for my heat pump - is this a rip off?
@sallyl That sounds about right if they are re-filling ...
By Brendon Uys , 1 day ago
-
RE: Enabling WiFi: Samsung ASHP on Smart Things App
I would switch it off and see if anyone noticed. We use...
By Johnmo , 2 days ago
-
I wouldn't be so sure about that. Heat pump designers ...
By JamesPa , 2 days ago
-
RE: Jokes and fun posts about heat pumps and renewables
@toodles they're a rowdy bunch!
By Mars , 3 days ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
Actually I might try just turning it off and on again…....
By benson , 3 days ago
-
RE: Home energy storage & battery register
@jamespa To a certain extent, by exporting to the grid ...
By Toodles , 3 days ago
-
RE: Forum updates, announcements & issues
@editor Fairy Nuff Mars, I doubt that my ramblings woul...
By Toodles , 4 days ago
-
RE: Confusion about heat pump sizing
We’ve published a deep dive into heat pump sizing, and ...
By Mars , 5 days ago
-
We’ve published a deep dive into heat pump sizing, and ...
By Mars , 5 days ago
-
RE: Kensa GSHP finally installed - now to start the optimisation process
Just had a quick scan of the manual and should be weath...
By Johnmo , 5 days ago