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Hi There-- We are building a cabin and will install a solar system. But first we are staying weekends in our Airstream on our property. My question is, how big of a solar system would I need? Calculation of Watt Hours needed: Desc Avg Watts Hours/Day Qty Total Notes CPAP Machine with...

Hi - I am wanting to experiment with solar energy and put a panel in my condo window. My purpose is to power some nighttime bedside lamps and a reading lamp. Nothing serious, mainly fun...edutainment! I've selected the Renogy 30 watt monocrystalline panel (...