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An energy system that is good for people and for the planet
solar Modules Power Characteristics/;
The current and power output of photovoltaic modules are approximately
proportional to sunlight intensity. At a given intensity, a module's output current and operating voltage are determined by
the characteristics of the load. If that load is a battery, the battery's internal resistance will dictate the module's operating
voltage.
A module which is rated at 17 volts will put out less than its rated power when used in a battery system.
This is because the working voltage will be between 12 and 15 volts. As wattage (power) is the product of volts times amps,
the module output will be reduced. For example: a 50 watt module working at 13.0 volts will produce 39.0 watts (13.0 volts
x 3.0 amps = 39.0 watts). This is important to remember when sizing a PV system.
| Equipment and System Components |
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What are PV cells, modules, and arrays? | 
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