Energy Yield and ROI
Energy Yield and ROI Calculator
Find out how much soiling is costing your site and what professional cleaning could recover.
Your Site Details
Total installed capacity of your solar array in kilowatt-peak.
Your site's total annual energy output in kilowatt-hours.
The rate you receive per kilowatt-hour exported to the grid.
Typical UK sites lose 5 to 10% from soiling. Coastal and agricultural sites may be higher.
Enter a quote or estimate to calculate your payback period.
Enter your site details
Fill in the form and click Calculate to see your estimated revenue loss and savings.
Methodology
Soiling loss
Applied as a direct percentage reduction to annual generation.
Restoration factor
A 90% restoration factor accounts for residual soiling between cleans.
Revenue figures
Indicative only, based on the export tariff you enter.
Actual results
Will vary depending on site conditions, panel type, and cleaning frequency.