diy solar

diy solar

My 44kW vertical and bifacial set in Finland.

Got my new panels today. 14,3kWp.
20231201_165018.jpg

20231201_163127.jpg

Also my replacement cell for my rack battery arrived. They actually send two while I asked only one. Maybe they are just so sh*tty?
20231201_182643.jpg

Couldn't read the QR code.
20231201_225509.jpg
 
Brucey said:
Saw this thought of you.

electrek.co

Switzerland put vertical solar panels on a roadside retaining wall

A canton in Switzerland commissioned a project in which solar panels were attached vertically to a roadside retaining wall.
electrek.co electrek.co
Click to expand...
I think Swiss had a pilot like this maybe year or two ago already. So I'm most definitely not the first one using vertical panels (there have been many before Swiss). Also they are using existing walls to get some solar benefit, while my target was to get max solar with lowest possible cost (no tracker, old used electric poles). While they can have a lot of snow in some places high up, I'm not sure if this is why they use vertical installation here. I on the other hand most certainly am. It has been slowly snowing for half a week, so I'm pretty happy with my design right now.

My new panels are going to my shed roof perpendicular to my existing array. It's in the same wheatfield maybe some 80m away from my solar corner. I'm going to use empty MPPTs from my Deyes, so I'm paying only for ground cable and panels to make it work. With snow they are going to suck, but in the summer they should give nice boost to my afternoon/evening harvest. If I find a good deal on bifacials, I already have a plan to use empty wall on that same barn. Painting it white and using "loose" installation I might have room for additional 10kWp there. For them I can use empty MPPTs on my AC coupled Bluesun inverters so it should be cheap again.
 
shadowmaker said:
Now I can get same rack battery for 130e/kWh. So their prices are coming down fast, just like individual cell prices.
Click to expand...

Yep, my latest DIY version is here:

diysolarforum.com

DIY LiFePO4 Cost Analysis - The Cheap November 2023 European Edition

Time to do a another calculation again. (previous posts here, here and here) - but this time, I will go cheap (but with cells available in Europe - I'll do an international Alibaba version at some point). Disclaimer, as usual: I mention vendors below and use them as an example and as reference...
diysolarforum.com diysolarforum.com

Price around 94 Euro per kWh
 
I also suspect my rack batteries have some kind heating elements included in them, but I have to open one to be sure. I don't need heaters for anything but at 130e/kWh that would be surprising.
 
Got two almost sunny days yesterday and today. Yesterday it was cloudy in the morning, today in the afternoon. 60kWh on both days (5 day old snow with actual heavy rain between and -1C to-2C only). Looking at the curves it should be possible to make about 80-90kwh in one perfect day in these conditions and maybe 100kWh with fresh snow and -25C. One and a half day to winter solstice so this is the best of the worst time possible.
 
shadowmaker said:
Got two almost sunny days yesterday and today. Yesterday it was cloudy in the morning, today in the afternoon. 60kWh on both days (5 day old snow with actual heavy rain between and -1C to-2C only). Looking at the curves it should be possible to make about 80-90kwh in one perfect day in these conditions and maybe 100kWh with fresh snow and -25C. One and a half day to winter solstice so this is the best of the worst time possible.
Click to expand...
Envious..
Been dark, overcast and grey here since October
 
houseofancients said:
Envious..
Been dark, overcast and grey here since October
Click to expand...
I almost doubled my whole December yield with these two almost sunny days. Now barely over 0,3Mwh and rest of the month should be snow/overcast according to recent forecasts. Not looking very good in here either. Plus I think I have corona (my wife and my youngest daughter had positive tests this morning). Don't have time to be sick just now...:mad:
 
We open one small present each with our Grandkids on night of 24th, (a few hours ago) then the big show in the morning. So I have to stay up to be sure they are sound asleep before placing those presents under our tree. 4-10 year olds, so nice at christmas, they have the magic. I get the cookies and milk. Merry Christmas everyone. Enjoy time with your friends and families.
 
0,4MWh out of 44kWp for December. Would have been just over 0,3MWh without last day sunshine (70kWh). Got 91kWh today, which is close to maximum at this time of year and it looks like I might get close to 0,5MWh this week only. 2024 seems to have nice solar start, but I'm pretty sure Mother Nature will piss on my parade sooner or later... Probably sooner.
 
shadowmaker said:
0,4MWh out of 44kWp for December. Would have been just over 0,3MWh without last day sunshine (70kWh). Got 91kWh today, which is close to maximum at this time of year and it looks like I might get close to 0,5MWh this week only. 2024 seems to have nice solar start, but I'm pretty sure Mother Nature will piss on my parade sooner or later... Probably sooner.
Click to expand...
I thought you guys up there were in hibernation this time of year.
 
Danke said:
I thought you guys up there were in hibernation this time of year.
Click to expand...
Bloody fireworks last night woke me up. Maybe few shots (bottles) of vodka and I might get back to sleep.:sleep:

upnorthandpersonal said:
Not at all - perfect weather right now: -22C here and snow, just no sun. Probably going ice fishing tomorrow :)
Click to expand...
-26C and just a little too much wind to really enjoy any outside activities.
 
Read some news now...Finland today reached 21 NOK (1.80 Euros) per kWh consumption only, fees extra.
Let's hope you will have much production in the following days ^^

Expensive.
 
LydMekk said:
Read some news now...Finland today reached 21 NOK (1.80 Euros) per kWh consumption only, fees extra.
Let's hope you will have much production in the following days ^^

Expensive.
Click to expand...

Spot prices - shouldn't affect too many people. It's due to the weather - we're at -40 C in some places (it's -30 C where I am).
It'll go even higher, to about 2.35 Euro per kWh and then drop again.

yle.fi

Electricity spot price to hit record â¬2.35 per kWh on Friday

The price hike is largely being blamed on increased electricity demand due to the extreme cold but also problems at local power plants.
yle.fi yle.fi
 
2.35 Euro!
WOW!, now if we could just sell some kWh to the grid at these prices...ROI would be so much better!
{If the North Atlantic wasn't in the way, I am sure Canada would be happy to run a line over, to help out UNAP!}
 
Like I said, it won't be an issue for most people. Here is the evolution:

www.herrfors.fi

Spotprices

Nykyiset spot-hinnat ‍Tilaa spot-sähkö
www.herrfors.fi www.herrfors.fi

It'll drop again fast enough. It was an unfortunate combination of weather conditions and a couple of power plants going down (and no wind, since there isn't any with this weather).
 
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