Solar Panel Owners - post your generation stats!

katie279 · 26 Mar 2022 at 06:10

Hi all,

I noticed some really interesting stats interspersed between the 25+ pages of the other pretty sprawling thread on this. Given recent energy hikes, I think this is of huge interest to folks.

Ask - if you have solar panels, can you be so kind to post your:

- setup - number of panels, watt output, battery etc
- annual production - electricity produced per year by them
- location in UK

By doing so, we can end up with a neat list to help folks get a sense of how much these setups can generate...!

rodders · 26 Mar 2022 at 15:57

12 panels, 333w each, no battery.
4000kwh AVE per year
Southampton

Extra info, was using approx 4200kwh per year off grid, now 2400kwh.
Might aid to help show potential savings

VaderDSL · 26 Mar 2022 at 16:03

How does the simulated data on here compare @rodders? https://re.jrc.ec.europa.eu/pvg_tools/en/tools.html#PVP

I stuck in 4kw south facing at 35degrees default values and it comes out at 4300kWh annual, not sure with more accurate data if it matches what you see on average?

rodders · 26 Mar 2022 at 16:22

4096kWh is the highest I've made since 2018.
Not sure on the pitch of my roof.
That site isn't great on a phone, will have to play on PC later.
My house is also set back a bit from the others, so I miss the sun, when others in my terrace have it. That's prob my few hundred kWh that's missing!

Foghorn Leghorn · 26 Mar 2022 at 18:06

4200kWh install (14 panels 300w es) no battery storage, yet.
Average generation 4000kWh pa.
Average yearly consumption 3900kWh before install, now 2400kWh

Mickie · 26 Mar 2022 at 18:51

4 panels on a shed, 175w each
In the sun for 7 months of the year.
About 600KW pa saved, its not always sunny.
Cost 1k to build

rah^ · 27 Mar 2022 at 08:13

10 x 380w panels split as 4 on the front and 6 on the rear

Roof orientations
Front 71 degrees from South
Rear 107 degress from south

Setup only installed since late January but already generated just short of 400kwh

sparkymark75 · 28 Mar 2022 at 12:32

12 x 380w JA panels connected to a Solis 3.6kWh inverter. On a SSW facing roof in southern Scotland.

I’ve only had them fitted since the end of Sept 2021 so not sure on the annual generation number yet but in that time it’s generated 882kWh. The estimate on the MCS cert is 3256kWh per annum.

sja360 · 31 Mar 2022 at 17:31

sparkymark75 said:
12 x 380w JA panels connected to a Solis 3.6kWh inverter. On a SSW facing roof in southern Scotland.

I’ve only had them fitted since the end of Sept 2021 so not sure on the annual generation number yet but in that time it’s generated 882kWh. The estimate on the MCS cert is 3256kWh per annum.

So in 6 months it's only produced 882kWh? Seems low i would have thought? So in the next 6 months it is to produce around 3x that over summer?

sparkymark75 · 31 Mar 2022 at 17:37

sja360 said:
So in 6 months it's only produced 882kWh? Seems low i would have thought? So in the next 6 months it is to produce around 3x that over summer?

Allegedly. I didn’t get the data logger until about 10 days after the solar PV was installed but doubt that would make much difference.

I’m in South Scotland so short winter days versus long summer days.

Axeboy · 31 Mar 2022 at 19:30

Yup, next to nothing for me in Dec and Jan, minimal in Nov and Feb, it seems about right for your location

Axeboy · 31 Mar 2022 at 19:34

I've got a little grid tied DIY system on my garage:

6 panels, 1.8kw
Pitched roof, poor location aiming generally east to west, west Scotland
No battery, just grid tied myself so no SEG, not that it matters
Made 1300kwh last year

Just had a further 10kw of panels installed with a 10kw battery, so far do good in this weather but too early for a decent report

Coran · 2 Apr 2022 at 19:51

18 x 330W panels (5.9kW max) with a 5kW solaredge inverter, facing south. No battery.

Produced 4,300kWh in 2021. I’m only using 40% of it directly though so I can see the benefit of a battery.

samcat · 2 Apr 2022 at 22:01

2kw panels, Sw facing on verandha (self install)
Due to shading from the house they only really 'switch on' around 11am.

July 2017 installed 1KwP
July 2019 we upgraded from 1KwP to 2KwP hence the jump
2018 750Kwh
2019 1139Kwh
2020 1591Kwh
2021 1438Kwh
2022 246Kwh year to date

gazref · 2 Apr 2022 at 23:59

Numbers question. As the average unit price is up to circa 25p now we're looking at £250 per 1000kwh. Has that sped up the years to break even more for smaller installs, larger or is it equally proportional.

Mickie · 3 Apr 2022 at 12:04

gazref said:
Numbers question. As the average unit price is up to circa 25p now we're looking at £250 per 1000kwh. Has that sped up the years to break even more for smaller installs, larger or is it equally proportional.

You'd get a quicker payback time if you used every bit of the energy generated at the lowest install cost possible. Rather than high install costs and low usage.

samcat · 3 Apr 2022 at 15:25

Mickie said:
You'd get a quicker payback time if you used every bit of the energy generated at the lowest install cost possible. Rather than high install costs and low usage.

^This.

The first Kw installed makes the biggest difference, as you use more of it/most of it. Covers all the background usage etc when the sun shines.

This is why (IMO) all new builds should have at least 1Kwp installed.

gazref · 3 Apr 2022 at 17:58

I was more angling at how the installation cost per kWh translates to break even as unit costs increase. Is the install cost that produces 1000kwh annually proportional to a 2000kwh install? Does unit cost increases benefit one Vs the other.