[RE-wrenches] off-grid help requested for Astoria, OR.

[Marco Mangelsdorf]

I have a friend who lives in Astoria, OR. looking for some PV help/assistance.  Below is what he wrote to me.

 

Any takers out there in that part of the woods?

Thanks,

marco


I have a friend here who would like to power his well pump using PV. He already has about 20 PV modules rated at 15 watts @ 12VDC each. His well pump is a 1/2 HP, 120VAC, single phase, 12 amp starting and 10 amp running current draw. He'd like to use the PV as its primary power (with battery buffer storage) and a transfer switch to the grid for backup if needed during the winter months. He says the max running time for the pump is one hour a day at 1200 watts.  He thinks he needs to use six panels wired for 24VDC (60 watts ?) output and two 12 VDC deep-cycle batteries. Make sense to you? Would you configure it differently?

What brand of inverter and charge controller (and any other hardware needed) would you recommend he use? 

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