diy solar

diy solar

December PV starting off crappy again.

Things are getting better. 135kWh with high clouds, so maybe 150-160kWh on a perfect day at this time of year from my 44kWp array. Over 1,1MWh production this month and there's still few days left. PVWatts predicted only 0,4MWh for the whole month so over 2,5 times that already. I did try to design my setup towards winter with my vertical bifacials, but now I realize that it's all about sun. No sun and I get only 2-5kWh/day at this time of year. It really doesn't matter how good, big or efficient your system is if there's no sun to be seen.
 
Things are getting better. 135kWh with high clouds, so maybe 150-160kWh on a perfect day at this time of year from my 44kWp array. Over 1,1MWh production this month and there's still few days left. PVWatts predicted only 0,4MWh for the whole month so over 2,5 times that already. I did try to design my setup towards winter with my vertical bifacials, but now I realize that it's all about sun. No sun and I get only 2-5kWh/day at this time of year. It really doesn't matter how good, big or efficient your system is if there's no sun to be seen.
I was just comparing output for the last 11 months to PV calculators using PV watts and JRC. My production has been higher than what the apps computed.

Maybe an outlier for the year and the next year could be lower. It is interesting to see how they compare.
 
Things are getting better. 135kWh with high clouds, so maybe 150-160kWh on a perfect day at this time of year from my 44kWp array. Over 1,1MWh production this month and there's still few days left. PVWatts predicted only 0,4MWh for the whole month so over 2,5 times that already. I did try to design my setup towards winter with my vertical bifacials, but now I realize that it's all about sun. No sun and I get only 2-5kWh/day at this time of year. It really doesn't matter how good, big or efficient your system is if there's no sun to be seen.

I would love to have 45kW of panels. Hoping to double my current to 30kW by next year.
 
I would love to have 45kW of panels. Hoping to double my current to 30kW by next year.
I already have little over 14kWp of new panels waiting to be installed. With my current array I think I'm close to cover my yearly consumption of 40-45MWh. It's just that even doubling my setup to something like 90kWp would not get me through winter up here, not even close. Even now I have more production than needed in the summer but being grid tied I can sell it away easily. Unfortunately spot prices are usually very low in summer so selling isn't that profitable. I still decided to expand my current setup as I have room in my inverters and panels were so cheap. I'll have to wait to see how well that money was spent.

In here 100kWp is max. After that you'll need permitting like a nuclear plant.
 
It's tough here in NH for winters. I'd probably need 100kW of panels and 300-500kWh of battery to make it thru winter. The cloud cover is brutal some weeks.
 
I admit that I did not understand it is about the cloudy days and not the sunny ones where I live.
As I have stated earlier, I am good with all the household needs except the Geo with just clouds.
I would have set up my system differently with a better understanding there.

Still getting crappy sunshine here and it snowed again last night. My favorite kind of snow, starts out rain and then changes to snow and then freezes that crap on the panels.
Good times.

Still adding panels , but I do not believe I can add enough to offset the 1400W near constant demand from the Geo on those cold dark days.

It doesnt mean I am not ready, Coal and wood backup are ready to roar in case of the zombie apocolypse. Its just that the geo on the grid is so cheap. I cant get coal for that cheap.

I think I would have to see 3000 Watts on a cloudy day to sustain power. I currently see about 1000.
A bright cloudy day I see 3000 Watts on the Insight Home. (all rough numbers)
 
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How sunny has it been here over the last week? I've got some solar powered motion lights that haven't had enough sun to work for 5 days in a row. Not "they won't last through the night". Won't turn on once when you walk by them.
 
Miserable in SW NH. Got a foot of snow yesterday through last night. Clouds, clouds and more clouds
 
I got 17kwh weekend before last, best two days ever for my 3.6kw array. Then it was sunny, cold and snow on the ground.

Since then we've been pretty much socked in. Bet we haven't got 5kwh total during that time span. Thinking we've had maybe 3in of rain, and otherwise gray. The ground is a sloppy, mucky mess. Pretty depressing weather, TBH.
 
47.6Kwh today. Wife did a few loads of laundry and ran the dryer. Ran the heat pump for some free heat.

First day of sun since last Monday. One more battery and I wouldn't need to have charged from 5% to 15% last night using grid.
 
Been 9 days since there was sun around central Wisconsin, going to be a few more to go yet. Today we were forecasted for a break in the clouds, but nope....
 
Went 9+ days without the batteries getting to 100%. Fog & absolute clouds day after day. Spent quite a bit of the time on grid and at 5% (my floor). Would have taken a 162 kWh battery bank to go off grid...and that's after taking EV charging out of the picture. 😵

Good news is I still had net metering credit to spare.
 

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everyone can cry me a river, haha. In michigan, we have seen the sun 3 days since November. literally. zero production. if off-grid, I would be 100% on generator the past two months.
Sorry. Went for a walk today. 65° and sunny. Will probably start cleaning up the garden later today.
 
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