I did similar 11 years ago though using lead acid battery bank with 3kw of solar panels. My system is 12v.
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RE: Solar power back up batteries are best found by thinking outside the box, The lead acid box that is....
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Solar power back up batteries are best found by thinking outside the box, The lead acid box that is....
Off grid is good! 12 volt is the most normal and 3000 watts is nice....
I went to 24 volts because I just wanted to half my current loading, to reduce the copper size, since I am wiring the entire house with 24 Volts.
How did the lead acid work for you? I may need to use some myself initially, if I don't have the full bank of LiIon that I want when we need to move in.
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So far it has been perfect as I only use about 10% off the top of the charge so they don't have much depth of discharge. They have been going 11 years now. I had thought about going 24 and even 48v system for less amps for the wireing and switches etc. 12v was much easier to do years ago.
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12 volts is definitely a lot easier because the car voltage has a lot of goodies running on it. That does make it a good choice! I am just hard headed, LOL!
I plan on a lot deeper cycle, which is hard on lead acid. We will run AC, heating, refrigeration and lights from this battery. I found a nice pair of AC/ Heat pump units that draw a total of 1800 watts for two tons of AC (24,000 BTU)
I found a refrigerator that draws 65 watts at 24 volts too; so we are getting there, LOL!
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Yes things like fridges, AC units and LED lighting are much more efficient than what I could get 11 years ago :-)
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Tech marches on for sure! I helped build one of the first ground heat AC systems (longer ago that I like to admit, LOL) and we even published in a peer review Journal. We had a Seasonal Energy Efficiency Rating (SEER) of almost 8! That got a lot of attention back then....
This new unit is a SEER of 22, that makes the system I worked on a Joke today, but back then it brought in the Feds! :)
This new refrigerator is a thousand dollars, so it is still pretty cutting edge.
I am an Electrical Engineer, so all the lighting will be my own design, including the dimmers.
I may run a parallel 12 volt system just to run my ham radio.
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The tech sure does improve and I hope you show us some of the progress as you go along :-)
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I will, it should be fun. I plan on using an Earth Battery for thermal scavenging to increase the efficiency using ground temperature! I am fighting to insulate and seal the house right now, it is important to begin right....
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Fantastic and yes the insulation is very important.
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