20–150 kW · Indore region
Daytime use
Class hours line up with peak solar generation.
Vacation surplus
Net metering credits summer-break generation.
Safe for campuses
Access-controlled roofs, guarded cable runs.
Learning tool
Live generation display for students.
Commercial ROI
12,000
₹9.0
Suggested plant
100 kW
Investment
₹40 lakh
Savings, year 1
₹13.02 lakh
Payback
3.0years
25-year savings
₹4.47 crore
Monthly savings
₹1,08,475
CO₂ avoided / year
103.6t
Before accelerated depreciation and financing. Assumes the plant is sized to daytime consumption; 3% annual tariff escalation.
| Item | 20 kW | 150 kW |
|---|---|---|
| Generation / year | ~29,180 units | ~2,18,850 units |
| Typical investment | ₹8 lakh | ₹60 lakh |
| Savings, year 1 | ~₹2.63 lakh | ~₹19.7 lakh |
| Payback | ~3 years | ~3 years |
Estimates at ₹9/unit, assuming the plant is sized to daytime consumption.
Classes, labs, computer rooms and fans run in daylight hours — a close match to solar.
FAQ
Yes. With net metering, units generated during vacations are credited and used later in the year, so the system keeps earning even when classrooms are empty.
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