How do my solar generation stats compare? Discussion.

Great to see your first solar stats coming in, @Jequinlan!

Wonder if our other solar panel members might be around to shed some (sun)light on how they compare? 🌞

@EverythingNeedsAUserName, @PeterR1947, @malc_smith, @JoeC, @Simonsalad, @sylm_2000?

Great pun @Jess_OVO  :)

@Jess_OVO If you look on my webpage http://www.rogers-family.me.uk/ then click on the link “Solar PV Panels” you can then see “The output from our system (known as SSE's best) can be viewed here at PVOutput.org”  Click on the “here” and you can see my output.  So far, since February 2011 I have generated 27.76MW

Hi, I too am new to solar but I have a 12Kw system so looking at your 3.6Kw system you appear to have generated 444.4kWh in 30 days, which would average 14.81kWh/day (444.4/30) which is 4.11kWh/kW of solar PV (14.81/3.6). I don’t yet have a full month of data since I have only had my system for 14 days but to give you a like for like comparison I have generated 740.9kWh which would average 52.92kWh/day giving a like for like generation of 4.41kWh/kW of solar PV. So it looks like we are not far off each other! Hope that helps and its nice to know for my own piece of mind. By the way I’m in NorthWest England and it has been quite sunny over the past 10 days. 

Thanks @Sean T and welcome to solar! 

That's a mighty big system you have. I am just south of London so that kind of real estate to even have a roof that size is well beyond my dreams (we are talking a £4m+ house to cope with that!)

It does indeed look similar in efficiency and has been quite cloudy here last few days.

Hi Jequinlan, yes it is quite a space, 34 panels in total but I have an agricultural barn about 30 meters away from my house so the panels are on a SSE facing roof and feed down to 2 Tesla Powerwalls and 2 Solis 6kW inverters in the barn, which then feed back down a 30m cable to the house. Up to now seems to be working very well. I use about 50kWh/day and haven’t had to buy any electricity from the grid for 6 days out of the 14 days I have had the solar, so a good start to my payback time! That includes using a 12kW Vailant ASHP and an everhot cooker that is on all the time. Over the past 7 days I have also exported 105kWh to the grid so time to invest in an EV! 

Fantastic. What is an everhot oven? I use 30kwh often daily and am just covering my supply at the moment.  I cannot get an ASHP as the trail OVO tried to get me on proved it just wasnt going to happen so i now have sadly a much more effiicent new vailent gas boiler, i am considering swapping hot water tank with a sunamp though.

My roof has 0m left on it so no room for solar expansion and local planning means i cannot get a wind turbine, even a small one. I could later consider solar on north facing mounted in reverse but not convinced yet.

Hi Jequinla, an Everhot Cooker is very similar to an electric AGA, same design but the electrical circuits are much more efficient providing a trickle of current to keep the ovens and hot plates heated. Due to the clever circuitry it simply plugs in with a single 13A plug but it has 1 x 200*C oven 1 x 250*C oven (temperature adjustable), 1 x 100*C oven/warmer, grill, boiling plate and a simmer plate. Uses about 100kWh/week but also acts as a room heater in the kitchen. Highly recommended, especially if you have some surplus solar! 

Hey. 

So I have a 6kwp array, fitted about 6 weeks ago, but it's split into 3. So it's basically 2kwp facing NE, 2kwp SE and 2kwp SW.

The NE panels are obviously going to generate significantly less than the others, and I would never hit the 6kw maximum, so I've got a 5kw inverter. (And 1 x 5.8kwh storage battery)

Attached is my generation for April (so the previous 23 days), April yield so far is 450kwh. Hopefully I'm doing better than a typical 4kwp system, but not expecting to be as good as a "normal" 6kwp system.

We get a great spread of generation throughout the day which I'm super pleased with so far.

Hi, good idea to split you array into 3 sections to make the best of your day and manage to generate 3.91kWh/kW of solar pv.