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Two buildings with the same bill can need completely different solar systems. What a structured FSP site survey checks - and why skipping it costs you in surprise charges or lost generation for 20 years.
Knowledge Center · Best Practice
Two buildings with the same electricity bill can need completely different solar systems. The difference is the site — and the only way to know the site is to stand on it. Here is why a structured site visit decides whether your system performs for 20 years or disappoints from day one.
It is a guess. A polite, formatted, professional-looking guess. Panel count, cable length, structure type, battery placement — every line item depends on physical facts that no phone call can verify. When the guess is wrong, one of two things happens: the price grows after the agreement, or the system quietly underperforms and you pay the difference in lost generation for years.
Real shadow-free area, roof condition, and whether the structure can carry the mounting system safely.
Morning-to-evening shading from tanks, stair rooms, trees, and neighbors — the silent generation killer.
DB location, wiring condition, and earthing status. Many older buildings need earthing correction before solar — better discovered now than after.
Panel-to-inverter and inverter-to-DB runs decide voltage drop and cable cost — measured, not assumed.
Inverter and battery need ventilated, accessible, safe space. “We will find a corner later” is how systems die early.
Your appliance list checked against reality — because every sizing calculation is built on this number.
One structured visit — and your solar decision stops being a guess.
