Yes, solar panels work on cloudy days, but expect 10-60% efficiency compared to sunny conditions. Rain can help clean your panels, improving performance over time.
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IV curve testing measures the electrical relationship between the current (I) and voltage (V) output of photovoltaic modules under standardized conditions.
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Most solar professionals recommend sizing your inverter for solar panels between 75% and 115% of your total panel wattage, with the sweet spot around 1:1.
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You need solar panels, inverters, racking equipment, and performance monitoring equipment to go solar. You also might want an energy storage system (aka solar battery), especially if you live in an area that doesn't have net metering.
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