India’s rapidly expanding solar energy sector, which now exceeds 168 gigawatts of installed capacity, faces a persistent environmental challenge: keeping panels free of dust in arid regions.
Accumulated grime on photovoltaic cells creates a physical barrier to sunlight, causing power generation to drop by 20 to 30 percent if panels are left uncleaned.
Maintaining these installations through traditional manual washing requires huge quantities of water, consuming up to 24,000 liters per megawatt for a single wash cycle.
Across India’s vast solar footprint, a single nation-wide water cleaning cycle could use over 4 billion liters of water, an amount equivalent to the combined daily water needs of major metropolitan areas like Delhi and Bengaluru.
To eliminate this reliance on water, Coimbatore based startup Solavio has engineered autonomous robotic cleaning devices.
Models such as the Ecobot traverse solar module arrays directly, using an anti-static microfiber cleaning system powered by friction and targeted airflow to remove surface dust.
Operating on onboard lithium batteries, the portable units travel across panels at speeds up to 0.3 meters per second, adjusting velocity based on dust density.
Third-party testing across 10,000 cleaning cycles confirmed that repeated robotic sweeping does not cause surface abrasion or damage photovoltaic modules.
With nearly one thousand units deployed across India and the Middle East, waterless automation offers a sustainable pathway to optimize solar output while conserving vital water resources.
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