To estimate how much electricity your solar system can generate in a day, you need a few key pieces of information: The total DC capacity of your solar system (in kW) The average number of peak sunlight hours in your area (also called solar irradiation) Just multiply your system size by the peak sunRead more
To estimate how much electricity your solar system can generate in a day, you need a few key pieces of information:
The total DC capacity of your solar system (in kW)
The average number of peak sunlight hours in your area (also called solar irradiation)
Just multiply your system size by the peak sunlight hours to get the theoretical daily generation.
For example, if you have a 3 kW system and your area gets 5 hours of good sunlight daily, then:
3 kW × 5 hours = 15 units (kWh) per day (theoretical)
However, in real-world conditions, solar systems usually operate at about 78% to 80% efficiency due to energy losses (from wiring, inverter, dust on panels, etc.).
So, you can expect around 20% less generation than the theoretical figure.
Using the example above, the actual generation would be about:
Several things can lower the amount of electricity your solar system produces. Dust, dirt, and bird droppings on panels (called soiling) can block sunlight, while cloudy or rainy weather naturally reduces how much sun your system gets. Even in perfect conditions, you won’t always get the maximum posRead more
Several things can lower the amount of electricity your solar system produces. Dust, dirt, and bird droppings on panels (called soiling) can block sunlight, while cloudy or rainy weather naturally reduces how much sun your system gets.
Even in perfect conditions, you won’t always get the maximum possible output. This is because your inverter, solar panels, and other equipment don’t work at 100% efficiency all the time. Over the years, solar panels also lose a little bit of their power—usually less than 1% per year. So, while your system may be designed for a certain output, real-world factors always bring that number down a bit.
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