A 12 volt panel has maximum power at around 17 volts so will need a minimum of 2 in series in a 24 volt system. There is no technical disadvantage but larger domestic sized 24 volt panels are cost effective.
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MIT spinout 247Solar is building high-temperature, concentrated solar power systems that use overnight thermal energy storage to provide round-the-clock power and industrial-grade heat.
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An 800w solar system could have a 1000w solar inverter and two 24v batteries of 200Ah capacity. This estimation is based on 5 peak sun hours, but this could vary widely depending on location and battery storage needed. Choosing the right inverter for your panels depends on multiple.
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One thing's certain – installing 24 photovoltaic panels today is easier than it was five years ago. But with great solar power comes great responsibility (to maintain and monitor your system). Thinking about taking the plunge? Get three quotes from certified installers.
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