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!
- 26 Forums
- 2,208 Topics
- 48.7 K Posts
- 407 Online
- 5,868 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Heat loss calculations and how they work in conjunction with heat pump sizing
Just wondering, and maybe this is a bit of a curve ball...
By Batpred , 31 minutes ago
-
Or nuclear fusion.. But what is proven (reservoirs, b...
By Batpred , 58 minutes ago
-
RE: Renewables & Heat Pumps in the News
I am not sure if many people would be running aircon or...
By Batpred , 1 hour ago
-
RE: What crazy nonsense are inverter limits and why are they imposed?
That will be producing significant losses due to phase ...
By Transparent , 1 hour ago
-
RE: Isolating the system for a planned power cut
When I said we'd need to know more about the RCD, MCB a...
By Transparent , 2 hours ago
-
RE: Radiator sizing for heat pump installation by British Gas - are these correct?
With the frvs, I assume looking at the blurb, they just...
By Bash , 3 hours ago
-
Which tells us something (including possibly everything...
By cathodeRay , 4 hours ago
-
RE: Flexi-Orb Heat Pump Scheme Update: Progress, Pilots and Why This Matters for Homeowners
Thanks for sharing. Sounds promising, ISO are indepe...
By Batpred , 7 hours ago
-
RE: Specifying batteries, pv solar etc using ChatGPT
I have been positively surprised when I asked it to spe...
By Batpred , 8 hours ago
-
Thank you. That simultaneously answers my question abou...
By Transparent , 12 hours ago
-
RE: Heating Turned Off but Radiators Still Warm
What do you mean by 'turned off' exactly. Same questio...
By JamesPa , 13 hours ago
-
RE: Low Flow Rate Error - 8 kW Ideal Logic ASHP - Help!
@wh0am3ye - OK, starting to make sense, but it does mea...
By cathodeRay , 13 hours ago
-
@editor fortunately we have a boiling water tap in the ...
By bontwoody , 23 hours ago
-
RE: Heat Pump Installers: Competence, Illusion and the Hard Truth Homeowners Must Face
@Fiona, I really don’t want to disappoint you, but I ha...
By Mars , 1 day ago