Calculator

What is dust costing your plant?

Enter your plant's numbers to estimate the energy lost to soiling and the water a waterless cleaning method saves each year.

Your plant Plant size

kWp

Total DC capacity of your panels. Daily generation per kWp

kWh/kWp/day

Most Indian sites see 4–5. Check your inverter data. Value of each unit

₹/kWh

Your grid tariff, or your PPA rate if you sell the power. Panel rating

Wp per panel

Used to count your panels.

Dust and cleaning Loss to dust today

Soiling typically costs Indian plants 3–6%. Loss with frequent cleaning

Regular cleaning can bring it to about 1%. Water per panel per wash

litres

Wet cleaning uses about 1–4 litres per panel. Wet washes per month

per month

Around two a month is common.

These are estimates for planning, not a guarantee. Every site's dust, weather and layout is different. For a figure based on your actual site, ask us for a survey.

Method

How the numbers are worked out

Energy and money

Yearly generation = plant size × daily kWh per kWp × 365. Energy you could recover = generation × (today's dust loss − loss with frequent cleaning). Value = recovered energy × your rate per unit.

Water

Panels = plant size ÷ panel rating. Water saved = panels × litres per panel per wash × washes per month × 12. A dry-cleaning robot or hand-driven dry cleaner uses no water, so all of this is saved.

Where the defaults come from

Bridge to India research, reported by pv magazine India, found soiling can cut output by 3–6%, that cleaning brings it to about 1%, that plants clean about twice a month, and that each wash uses 1–4 litres per panel. Change any number to match your site.

FAQ

About these estimates

How do I find my plant's soiling loss?

Compare generation on two clear, similar days: one just before a cleaning and one just after. The percentage difference is a good estimate of your soiling loss. Your monitoring portal or inverter data will have the numbers you need.

Why is my real loss different from the default?

Dust varies a lot with location, season, nearby roads and industry, panel tilt and rainfall. Plants near construction, highways or industrial estates often lose more. That is why every input can be changed.

Which waterless product suits my plant?

For long, continuous panel rows, a Solar Glide robot cleans every day without anyone on the roof. For short or broken rows, an Aqualess hand-driven dry cleaner lets one person clean quickly without water.

Can MROBOTICS check these numbers for my site?

Yes. Share your plant size, location and layout and we will recommend the right setup and estimate your results. Contact us or call +91 81408 28100.