Sized for mid-size factories, cold storage units, larger function halls and schools. Real numbers below: system cost, monthly generation, accelerated depreciation math, and payback — no subsidy assumed, because commercial connections don't get PM Surya Ghar.
Cost range reflects 2026 Indian commercial rooftop solar market rates (~₹40,000-70,000/kW, with larger systems costing less per kW). Roof type, structure (RCC vs tin shed), panel brand, and site access change the final number — confirmed only after a free site survey.
Multi-shift or larger-capacity rice mills with heavier milling and polishing machinery load — a 50kW array offsets a substantial share of daytime industrial consumption.
Compressor and refrigeration load runs through daylight hours as well as night — solar directly offsets the daytime compressor cycle, which is typically the heaviest load window.
Larger campuses with big terrace area and daytime-only operating hours — classroom lighting, fans and computer labs align almost perfectly with solar generation.
Marriage gardens and convention halls with bigger AC and kitchen load, plus weekday off-peak generation that can be banked via net metering for event days.
Illustrative numbers for a business currently paying a commercial electricity bill of roughly ₹55,000-65,000/month with a ~50kW sanctioned load.
| System size | 50 kW |
| Estimated system cost | ₹23,50,000 |
| Monthly generation (120 units/kW/month) | 6,000 units |
| Monthly bill offset (@ ₹9/unit) | ₹54,000 |
| Annual electricity savings | ₹6,48,000 |
| First-year depreciation (40% of cost) | ₹9,40,000 |
| Illustrative tax saving @ 25% slab | ₹2,35,000 |
| Illustrative tax saving @ 30% slab | ₹2,82,000 |
| Simple payback (electricity savings only) | ~3.6 years |
* Illustrative only, not tax advice — depreciation math assumes the asset is put to use for 180+ days in the financial year (else only half the normal rate, 20%, applies in the year of purchase). Actual tax benefit depends on your entity's income, applicable surcharge/cess, and tax regime. Run your own numbers in the depreciation calculator →
Solar power-based devices are classified as a 40% WDV block of assets under Appendix I to the Income Tax Rules (Rule 5 read with Section 32(1)(ii)). A business can write off 40% of the system cost against taxable profit in year one — a real cash tax shield, not available on most other capital equipment.
Commercial and industrial DISCOM tariffs in Telangana run higher per unit than residential slabs. Every unit a rooftop system generates offsets a more expensive unit — so paper payback is faster than a similarly-sized residential system, even with zero subsidy.
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