The O&M economics of a five-year rooftop portfolio

Where the maintenance rupee goes

Ask an asset owner to name their biggest O&M cost and most will say module cleaning. Across 28 MW of commercial rooftop over five years, cleaning was the third line — and the cheapest of the three by a wide margin.

Unplanned visits are a data problem

A quarter of the budget goes to driving somewhere to find out what is wrong. On sites where string-level monitoring was commissioned correctly, that line fell by slightly more than half — not because fewer things broke, but because the van left with the right part already on it.