This question is part of the Super Big Solar Panel FAQ from Solar Mango, where expert answers to over 100 important questions on solar panels are provided.

 

The answer to this question depends on the following:

  • Solar Radiation
  • Quality of the Components
  • Maintenance
  • Output for High Radiation Regions
  • Output for Moderate Radiation Regions
  • Output for Low Radiation Regions

Solar Radiation

The extent of solar power generation depends on the solar radiation at that location, measured as DNI (direct normal irradiance). DNIs vary from 5.5 kWh/m2/day for high sunshine regions to as less than 3 kWh/m2/day for many regions with low-moderate sunlight.

Quality of Components

Always go for quality panels, inverters and cables. A good quality solar power system could cost 10% higher, but could generate up to 30% more than an average system, all aspects considered, over a 25 year life time.

 

Super Big Solar Panel FAQGet to know answers to over 100 important questions on solar panels from here.

 

Maintenance

How frequently you clean your panels and monitor your inverter and other components for repairs can significantly affect generation. For instance, a poorly maintained system can generate up to 25% less power than a well maintained one.

Output for High Radiation Regions

Very high solar radiation regions can generate up to 5 kWh /kW/day on average, or about 1800 kWh per year.

Output for Moderate Radiation Regions

Moderate solar radiation regions can generate in the range 3.5-4 kWh /kW/day on average, or about 1250-1450 kWh per year.

Output for Low Radiation Regions

Regions with low solar radiation could have generations as low as 2.5 kWh/kW/day on average, or just 900 kWh/year from 1 kW. Solar power might not be recommended for regions with solar power generation lower than 900 kWh/year/kW.

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