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Solar for a small shop: daytime load, GST and a four-year payback

Why shops, bakeries and clinics often get faster payback than homes, and what to check before installing.

By The Solar Daily Editorial Team2026-09-14Business5 min read

Part of the complete guide: Business, institutions & farms

Shops use most of their power while the sun is up: lights, fans, refrigeration, a counter computer and often an air-conditioner. That is the ideal profile for solar.

Why shops do well

  • Daytime use means almost every unit generated is used on the spot.
  • Commercial tariffs are usually higher than domestic ones, so each unit saved is worth more.
  • Businesses can often claim depreciation on the system; ask your accountant what applies to your entity.

What PM Surya Ghar does not cover

The central household subsidy is for residential connections. A shop on a commercial connection does not receive it, so the payback is driven by tariff savings alone — typically around 3.5–5 years for a well-sized system.

Roof and rights

If you rent the building, get the owner's written consent and agree who owns the system if you move. See our Neyyattinkara shop case study.

Always verify. Subsidy, tariff and price figures change; confirm with the official portal, KSEB / TNPDCL and a written quote.

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