DRAFT — outline only. Do not publish until the figures below are verified. Keep this guide inactive until it is written.
Angle: A diagnostic ladder for an owner whose numbers look low.
This guide must answer: - What are the common causes (soiling, shading, inverter fault, seasonal)? - How to tell normal seasonal dip from a real fault? - What can the owner check vs the technician? - When it's a warranty claim vs a maintenance issue.
Writing rules: answer the question in the first two sentences, put a real number in the opening paragraph, name the specific city or DISCOM where the answer varies, and link to two related guides and the relevant category page.
Verify before publishing: Process knowledge; keep accurate.
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Last updated 4 August 2026 · Reviewed by the RenSetu team