Real savings. Real story. Real regret avoided.
Going solar isn’t just about being green—it’s an investment that pays steady, tax-free returns. This article shows the solar ROI Delhi homeowners can expect in 2025, using a real customer case study and updated price data.
Meet Aman Khandelwal – A Delhi homeowner
Aman owns a two-floor house in Pitampura, New Delhi. Before solar, his electricity bill swung from ₹2,100/month in winter to ₹10,000+ in peak summer. He nearly postponed installation by a year—until a quick spreadsheet showed the cost of waiting.
“Just delaying by one year would have wiped out ₹50,000 in savings and bumped the system price by 5%. Installing right away was a no-brainer.”
How much did Aman spend on electricity without solar?
☀️ Summer bill (April–September)
| Month | Units used | Estimated bill (₹) | Avg rate (₹/unit) | Units offset by solar | Bill after solar (₹) | Avg rate after solar (₹/unit) | Monthly savings (₹) |
|---|---|---|---|---|---|---|---|
| April | 600 | ₹ 4,679 | ₹ 7.80 | 640 | ₹ 0 | ₹ 0.00 | ₹ 4,679 |
| May | 1,150 | ₹ 10,527 | ₹ 9.15 | 551 | ₹ 4,662 | ₹ 7.34 | ₹ 5,865 |
| June | 1,250 | ₹ 11,688 | ₹ 9.35 | 508 | ₹ 6,115 | ₹ 9.82 | ₹ 5,573 |
| July | 1,300 | ₹ 12,305 | ₹ 9.47 | 432 | ₹ 7,439 | ₹ 10.08 | ₹ 4,866 |
| August | 1,200 | ₹ 11,064 | ₹ 9.22 | 511 | ₹ 5,576 | ₹ 8.05 | ₹ 5,488 |
| September | 1,100 | ₹ 9,980 | ₹ 9.07 | 499 | ₹ 4,684 | ₹ 8.48 | ₹ 5,296 |
| Total | 6,600 | ₹ 60,243 | 3,141 | ₹ 28,476 | ₹ 31,767 |
A properly oriented 5 kW rooftop system trims this summer bill via net-metering.
❄️ Winter bill (October–March)
| Month | Units used | Estimated bill (₹) | Avg rate (₹/unit) | Units offset by solar | Bill after solar (₹) | Avg rate with solar (₹/unit) | Monthly savings (₹) |
|---|---|---|---|---|---|---|---|
| October | 500 | ₹ 3,663 | ₹ 7.33 | 508 | ₹ 0 | ₹ 0.00 | ₹ 3,663 |
| November | 430 | ₹ 2,952 | ₹ 6.87 | 431 | ₹ 0 | ₹ 0.00 | ₹ 2,952 |
| December | 400 | ₹ 2,650 | ₹ 6.63 | 416 | ₹ 0 | ₹ 0.00 | ₹ 2,650 |
| January | 380 | ₹ 2,509 | ₹ 6.60 | 418 | ₹ 0 | ₹ 0.00 | ₹ 2,509 |
| February | 390 | ₹ 2,579 | ₹ 6.61 | 507 | ₹ 0 | ₹ 0.00 | ₹ 2,579 |
| March | 450 | ₹ 3,159 | ₹ 7.02 | 629 | ₹ 0 | ₹ 0.00 | ₹ 3,159 |
| Total | 2,550 | ₹ 17,512 | 2,909 | ₹ 0 | ₹ 17,512 |
Covers 100% of daytime winter use, slicing roughly ₹17,000+ a year.
Annual solar savings snapshot
| Season | Typical bill (₹) | Savings with 5kW Solar (₹) |
|---|---|---|
| Summer (Apr–Sep) | ₹ 60,243 | ₹ 31,767 |
| Winter (Oct–Mar) | ₹ 17,512 | ₹ 17,512 |
| Annual Total | ₹ 77,755 | ₹ 49,279 |
Generation estimates: 20–21 kWh/day, Delhi irradiance, minimal shading.
The real cost of waiting 1 year
| System Size | Price Today | +5 % Inflation | Missed Savings | Total Cost of Waiting |
|---|---|---|---|---|
| 5 kW | ₹3,20,000 | ₹3,36,000 | ₹ 49,279 | ₹3,85,279 |
Inflation is painful, but forgone compounding savings hurt even more.
Who should act now?
- Independent or top-floor homeowners
- Monthly bills of ₹2,500+
- Property is self- or family-owned
- Want protection from future tariff hikes
Each month you wait, you’re paying your DISCOM instead of yourself.
Easy financing, zero to little upfront
VaySolar partners with leading banks to offer:
- ₹0 upfront cost
- Affordable monthly payments
- Interest rates 7–10%
- Tenors up to 10 years
🏦 Trusted by banks. Installed by experts.
📞 Book a free consultation to see customised EMI plans.
Want instant numbers? Try our ROI calculator
Get pay-back, return and monthly cash-flows in under a minute.
Key takeaways
- Aman avoided ₹65,000+ in hidden losses by acting fast.
- A 5 kW system offsets 90%+ of a typical Delhi summer bill.
- Waiting a year raises hardware cost and forfeits a full year of bill savings.
- Flexible EMIs make the switch cash-flow positive from day one.
Don’t let your roof sit idle — make it pay you back starting today.
Internal resources
- 2025 subsidy guide – check current CFA slabs
- Installation process – see the step-by-step timeline
- Savings calculator – estimate turnkey system cost
Last updated: 17 June 2025
Data sources: Delhi DISCOM tariff order 2025-26, MNRE generation norms, VaySolar installation records.