Solar Loss Calculator
How Much Money Could Dirty Solar Panels Be Costing You?
Dust, algae, bird droppings and other deposits can reduce the amount of electricity your solar panels generate, affecting the financial return from your installation.
Use Horizon Agri Ltd's free Solar Loss Calculator to estimate the potential annual electricity generation and financial losses caused by solar panel soiling.
Enter your system size, location and electricity value to see how even a small reduction in performance could affect your annual revenue or savings.
Whether you manage a commercial rooftop installation or a large ground-mounted solar farm, understanding potential soiling losses can help you make informed decisions about solar panel cleaning and maintenance.
ESTIMATED ANNUAL LOSS
£0 / year
Estimated annual generation loss
0 MWh / year
Indicative annual generation
0 MWh
Estimated annual yield
0 kWh/kWp/year
Site location
Postcode
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How we calculate your potential solar losses
Our calculator uses your postcode to determine your geographical location through Postcodes.io, then uses solar irradiation data from the European Commission's Photovoltaic Geographical Information System (PVGIS) to estimate annual solar electricity generation.
This location-specific estimate is combined with your installed system capacity, estimated soiling loss percentage and electricity value (£/kWh) to calculate the potential annual financial impact of dirty solar panels.
PVGIS is a widely recognised solar energy modelling resource used across the renewable energy industry.
Please note: Results are indicative estimates. Actual generation and financial losses depend on factors including panel orientation, tilt, shading, weather conditions and site performance.