RESCO for a Commercial Building: Pay Only for the Solar Units You Use
RESCO · PPA
RESCO Model Case Study
No investment, no maintenance — just a lower tariff per unit.
RESCO · PPAGurugram5 min readIllustrative
RESCO for a Commercial Building: Pay Only for the Solar Units You Use
The client situation
A commercial office complex in Gurugram pays a high commercial tariff and runs air-conditioning loads all day — perfectly matched to solar hours. The owners do not want to tie up capital or manage an asset outside their core business.
The RESCO structure
- A RESCO developer (IG Solar or its financing partner) designs, funds and builds a 400 kWp rooftop plant
- The building signs a long-term Power Purchase Agreement (PPA)
- The building pays only for solar units consumed, at a fixed or mildly escalating tariff
- Developer handles O&M, insurance and performance for the full term
- Optional buy-out after an agreed period
| Parameter | Indicative value |
|---|---|
| Plant size | 400 kWp rooftop |
| Annual generation | ~5.6 lakh units |
| Grid tariff (commercial) | ~₹8.5/unit |
| RESCO tariff | ~₹5.0/unit, fixed |
| Saving per unit | ~₹3.5 (≈40%) |
| Annual saving | ~₹19–20 lakh |
| Client investment | ₹0 |
| PPA term | 15–25 years |
Who RESCO suits best
- Commercial buildings, malls, hospitals, hotels and warehouses with strong daytime load
- Creditworthy organisations wanting OPEX instead of CAPEX
- Buildings with large, structurally sound, long-life roofs
Illustrative case study — figures are indicative and based on stated assumptions; actual results depend on site, tariff category, regulatory charges and financing.
Key takeaways
- Developer invests, owns, operates and maintains the plant
- Client pays a fixed ₹/unit tariff for solar consumed
- Typical saving: 35–45% on every solar unit
- 15–25 year agreement; no CAPEX on the client balance sheet
Check RESCO eligibility
Upload your electricity bill — we will tell you if your roof qualifies for a RESCO tariff.
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