DRAFT — outline only. Do not publish until the figures below are verified. Keep this guide inactive until it is written.
Angle: The blunt payback maths on adding an unsubsidised battery.
This guide must answer: - What does a home battery cost and how long does it last? - Since it's unsubsidised, how much does it lengthen payback? - Is the value backup-convenience rather than savings? - When it's worth it despite weak payback.
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: Battery cost/lifespan figures; keep consistent with other guides.
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Last updated 4 August 2026 · Reviewed by the RenSetu team