DIY Solar Shed Project

[Johnmahon]

I’m doing the same thing in Arizona where we have 320 days of sunshine. I have a 10x12 shed with r19 and r30 rating insulation to help with the 115 degree summers. I’ll have a window mounted AC unit to help in the dead of summer.

Here are my questions for the group. I’ll be installing two Panasonic 335 watt HIT panels (specs here: https://a1solarstore.com/panasonic-hit-335w-solar-panel.html) and I want to do a 24 volt system using two battleborn 100ah lithium batteries in series. With this, configuration, what charge controller and inverter should I use?

I’d like to use Victron 100-30 charge controller or this all in one MPP system found on Will’s site: https://www.mobile-solarpower.com/all-in-one-solar-power-packages1.html

What is the advice of the group?

Thanks!

John

 

[Craig]

Personally I like things seperate so if one thing breaks you are not necessarily all shut down. But the MPP units seem reliable and simple . it all comes down to how much you want to fiddle with your project. My only concern about the Victron 100-30 is will it give you room to grow. That AC in the summer may take a lot of your juice so you may wish for more power at some point.

 

[Donald Siegel]

You have 700 watts of PV that may deliver 500 watts of continuous energy, the AC likely will take 1000 watts to run or more so the battery will need to make up the difference. The AC will likely run on this system with PV and battery combined for 4 hours when the sun is optimal then take most of another day with no load for the battery to fully recharge. For continuous use of the shed in hot conditions I am thinking 2000 watts of PV and 4 100ah 12v batteries.

 

[Johnmahon]

Thanks for the feedback. I have since decided to run AC with grid power and everything else on solar. Appreciate the feedback!