diy solar

diy solar

December PV starting off crappy again.

If you are going geothermal then I would look into heating your water with the geothermal heat pump. More efficient.
It is more efficient sometimes. I can just blow in ground heat into the inputs of all of the stuff when it's colder out but when it's warmer out it isn't more efficient (for the water heater) .. but it is for AC units as ground here is 49 degrees at 8ft (pretty average for the global temp that low)
4500W heating element so 18A per leg.
Yea but they should make the non-hybrid 240v too so it balances on my solar :cry:
Uses 240V for compressor, about 150W per leg, I just checked.
wow... so the real option is to get hybrid for solar and just set it to only use heat pump lmao wtf
they don't even have ONE option that is heat pump only and 240v
Good question, don't know. I looked at compressor size and did not see any difference. I would not buy a heat pump only unit. There are times when the heating element can work well as a dump load or quicker recovery. End of the day battery bank hits full charge and heat pump water heater is not 100% full of hot water. Just switch over to the heating element to dump excess PV.
It must be marketing.. wtf I just emailed them asking why

usually in my experience anything that is "hybrid" and does "multiple things" is more expensive than 1 single thing that is simple.. but then if you buy a bunch of single things to do what the hybrid does then they're overall more expensive.. tools for example
these heat pump water heaters are very weird prices.
& yea the dump load is good. I got a hot tub for that but can prob put some lines on the hot water heater and have a heat pump hot tub lool to throw all that heat into the air.. maybe not a great idea

but yea it seems the 240v is the way to go, worst case I can throw some elements on it that are like 1500 watts instead of 4500 and as far as I see no water heater runs both elements at the same time so 1500 is a bit nicer than 4500 for my system. rheem seems to have tons of elements to select from

thanks for the info on the 240v compressor that really makes the purchase easy
 
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I thought maybe you would get more snow and clouds today than we received. Looks like you had a good day like I did here. Nothing spectacular but OK.

Only excess load I have been running since last Friday has been running the hybrid heat pump water heater during the day. Just enough sun to hold battery at the SOC in the morning, power loads during the day and make hot water.
 
Not bad today, 27Kwh from the 8.4Kw of panels. Everyday since last Thursday has been net negative overnight and slowly dropping battery SOC. It was somewhere around 50% SOC this morning.
 
400KWH/day is a stunning amount to actually collect. Where on earth are you using it? With minimal A/C and Heating thru march, I maxed out a day just under 100KWH, but I'm flatlined at 100% charge pretty much every day just after noon. Total battery charge dipped below 20% a couple of times.

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I truly don’t know what I’m capable of at this point.

My batteries are usually charged by noon and then they just idle with the house usage.

Today I got 60 kWh but stopped charging at 12:30.
 
I thought maybe you would get more snow and clouds today than we received. Looks like you had a good day like I did here. Nothing spectacular but OK.

Only excess load I have been running since last Friday has been running the hybrid heat pump water heater during the day. Just enough sun to hold battery at the SOC in the morning, power loads during the day and make hot water.
Today was a crap day, the past few days have been bad.
March 29th 112kwh
March 30th 204kwh
April 1st 56kwh
April 2nd 20kwh
April 3rd 64.5

We only got about 4 inches of snow out of this one, over 12+ to the east of me.
 
400KWH/day is a stunning amount to actually collect. Where on earth are you using it? With minimal A/C and Heating thru march, I maxed out a day just under 100KWH, but I'm flatlined at 100% charge pretty much every day just after noon. Total battery charge dipped below 20% a couple of times.

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2 ev cars, bitcoin mining, in floor heat in shop, heating my basement, heating my house, and charging battery from over night ev charges, or bitcoin mining all night long if I know there will be sun the next day. All manual loads turned on by wifi switches.
 
I truly don’t know what I’m capable of at this point.

My batteries are usually charged by noon and then they just idle with the house usage.

Today I got 60 kWh but stopped charging at 12:30.
Need to wire in some loads to use that power up! As soon as it warms up, I will be wasting power with not enough load. Might buy a few more cheap old bitcoin miners, but they cost money too.
 
Passed my inspection two weeks ago, got my sell back meter on Monday; now 5 days of no sun in eastern Iowa. Murphys law sucks. Plan to add some vertical solar to boost production on crappy days. Wonder how refection off the 1/3 acre pond will work with vertical solar?
 
Need to wire in some loads to use that power up! As soon as it warms up, I will be wasting power with not enough load. Might buy a few more cheap old bitcoin miners, but they cost money too.
Lost a few hundred watts didn't realize I was topped off, threw the oil filled radiator on for a 920W load.

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5KWH here, 5KWH there pretty soon you'll be talking about some real battery capacity. :giggle:
I have two jk BMS to build a couple big 48V batteries but keep finding 24V100Ah or 48V 50Ah for $350-$400 which make it marginal versus diy cost. Not sure what the end goal is but I suspect the answer will always be "more".
 
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