s13gram
New Member
- Joined
- Aug 30, 2020
- Messages
- 4
My buddy and I have a 600 sqft 2 br cabin in Northern Georgia that's fully off grid. It's surrounded by national forest and has limited sunlight and limited open space around it and the current solar system is not working well (12V charger, 120V inverter, 100Ah worth of batteries, 100W panel). We drain this system from fully charged in a weekend or less.
Panels will most likely be mounted on the porch roof which is near level with a slight orientation west. Our cabin is in an area that gets poor sunlight and has a good amount of rainfall and overcast days, we definitely need a system that will keep up even if it's cloudy, or is big enough to regularly not get sun for 4-5 days. My one electricity class 15 years ago is completely gone so forgive any mistakes I make.
The cabin is regularly used, mostly for 2-3 day weekends, by 2-4 people at a time. We want to upgrade to something we can use without concern, even though are needs are not super high. It would be nice to be able to charge and run electronics, run the wood stove blower in the winter, 12v water pump, LED lights, bathroom fans, ceiling fans or window fans as needed. We have propane fridge/utilities and a generator for the AC (rarely used) so not looking to run anything super high draw. I would definitely like to be able to plug in our generator and use it to power the cabin as needed and recharge batteries. Based off what I've read and the experiences of people I've talked to, I think I want a 24V MPPT system with LiFePO4 batteries. Don't want to deal with dead batteries constantly like we currently do.
My back of the envelope calculations look like 2000-4500 watt-hours of usage per day, mostly 120V.
I'm thinking 6 300W panels for 1800W, 24V input. Probably 6 of these: https://a1solarstore.com/canadian-solar-cs3k-315ms-solar-panel.html
300Ah of LiFEPO4 batteries, 2x https://www.techdirectclub.com/life...h-220-ah-battery-pack-ev-golf-solar-with-bms/
I want an all in one unit with utility charging from the generator. I'm thinking this one: https://watts247.com/product/hybrid-lv2424/
Am I missing anything obvious here or any reason these wouldn't all work together?
Panels will most likely be mounted on the porch roof which is near level with a slight orientation west. Our cabin is in an area that gets poor sunlight and has a good amount of rainfall and overcast days, we definitely need a system that will keep up even if it's cloudy, or is big enough to regularly not get sun for 4-5 days. My one electricity class 15 years ago is completely gone so forgive any mistakes I make.
The cabin is regularly used, mostly for 2-3 day weekends, by 2-4 people at a time. We want to upgrade to something we can use without concern, even though are needs are not super high. It would be nice to be able to charge and run electronics, run the wood stove blower in the winter, 12v water pump, LED lights, bathroom fans, ceiling fans or window fans as needed. We have propane fridge/utilities and a generator for the AC (rarely used) so not looking to run anything super high draw. I would definitely like to be able to plug in our generator and use it to power the cabin as needed and recharge batteries. Based off what I've read and the experiences of people I've talked to, I think I want a 24V MPPT system with LiFePO4 batteries. Don't want to deal with dead batteries constantly like we currently do.
My back of the envelope calculations look like 2000-4500 watt-hours of usage per day, mostly 120V.
I'm thinking 6 300W panels for 1800W, 24V input. Probably 6 of these: https://a1solarstore.com/canadian-solar-cs3k-315ms-solar-panel.html
300Ah of LiFEPO4 batteries, 2x https://www.techdirectclub.com/life...h-220-ah-battery-pack-ev-golf-solar-with-bms/
I want an all in one unit with utility charging from the generator. I'm thinking this one: https://watts247.com/product/hybrid-lv2424/
Am I missing anything obvious here or any reason these wouldn't all work together?
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