Every homeowner weighing rooftop solar circles back to the same question: "What do I actually get back?" That's the right instinct — solar is a real investment, and the returns deserve honest math rather than inflated brochure figures.
Here in South Haryana — Faridabad, Palwal and Gurugram — the case is genuinely strong: steady year-round sunshine, a healthy central subsidy, and DHBVN tariffs that keep climbing. Let's work through the numbers for a standard 3kW home system, with no exaggeration.
First, How Much Power Does 3kW Make?
Haryana sits in a high-irradiance belt. In practice, 1 kW of well-installed panels yields about 4 units a day averaged across the year — stronger in the long summers, softer during monsoon and the foggy winter weeks.
- Daily: 3 kW × 4 = 12 units
- Monthly: ≈ 360 units
- Yearly: ≈ 4,320 units
For most 2-3 BHK homes in the region, that comfortably covers the bulk of daytime consumption.
Where the Savings Come From
1. A Smaller Electricity Bill
DHBVN's domestic tariff works out to roughly ₹7 per unit on a blended-slab basis.
- Monthly saving: 360 × ₹7 ≈ ₹2,520
- Annual saving: ≈ ₹30,000
With net metering in place, the surplus you export by day offsets what you pull from the grid at night, so effectively every unit your panels make is working for you.
2. The PM Surya Ghar Subsidy
For a 3kW residential system, the central scheme pays the maximum slab amount straight to your bank account:
| System Size | Subsidy per KW | Total Subsidy |
|---|---|---|
| 1 KW | Rs 30,000/KW | Rs 30,000 |
| 2 KW | Rs 30,000/KW | Rs 60,000 |
| 3 KW+ | Rs 30,000×2 + Rs 18,000×1 | Rs 78,000 |
Central subsidy (PM Surya Ghar): ₹78,000 — and ₹78,000 is the ceiling, regardless of how much larger your system is.
3. Is There Any State Support?
This is where Haryana differs from what you may have read about other states: there is no universal state top-up stacked on the central subsidy for the average household. The one targeted exception is HAREDA's support for low-income families.
| Consumer Category | Additional Haryana Support | Eligibility |
|---|---|---|
| Antyodaya / low-income families | Rs 25,000/KW (up to 2 KW) | Annual income up to Rs 1.80 lakh, via HAREDA |
| General residential | No extra state subsidy | Central PM Surya Ghar subsidy applies |
So for a typical homeowner, plan your budget around the ₹78,000 central subsidy and treat anything else as a bonus only if you qualify under the Antyodaya income criteria.
Beware of quotes promising stacked state subsidies that push your "free" amount well above ₹78,000. In Haryana, the central PM Surya Ghar amount is the realistic figure for most homes.
4. Net Cost and Payback
| Item | Amount | |------|--------| | System cost (3 kW, indicative) | ₹1,65,000 – ₹1,95,000 | | Less: PM Surya Ghar subsidy | – ₹78,000 | | Your net cost | ₹87,000 – ₹1,17,000 |
Against an annual electricity saving of about ₹30,000:
- Payback period: roughly 3 – 4 years
- After payback: more or less free power for the remaining 20+ years
That's a far more believable timeline than the sub-two-year claims you'll see elsewhere — and it still makes solar one of the better returns available to a homeowner.
The 25-Year View
Panels are built to last around 25 years, with only gradual output decline. Stretched over that life:
| Benefit | Amount | |---------|--------| | Electricity savings (25 yrs, at today's tariff) | ≈ ₹7,50,000 | | Less: net system cost | – ₹87,000 to ₹1,17,000 | | Net lifetime savings | ≈ ₹6.4 – 6.7 lakh |
And that's conservative — it assumes today's tariff stays flat.
DHBVN tariffs have historically risen 3-5% a year. Because your solar cost is fixed once installed, your real savings actually grow each year the grid gets more expensive — so the 25-year figure above is a floor, not a ceiling.
What If You Use More Power?
If your bills run high, a bigger array makes sense — just remember the subsidy is capped at ₹78,000, so the extra capacity is self-funded:
| System Size | Monthly Generation | Monthly Saving | Subsidy | Net Cost | |------------|-------------------|----------------|---------|----------| | 1 kW | 120 units | ₹840 | ₹30,000 | ₹25,000–35,000 | | 2 kW | 240 units | ₹1,680 | ₹60,000 | ₹50,000–70,000 | | 3 kW | 360 units | ₹2,520 | ₹78,000 | ₹87,000–1,17,000 | | 5 kW | 600 units | ₹4,200 | ₹78,000 | ₹1,97,000–2,47,000 |
Above 3kW the subsidy stops growing, so net cost rises — but the long-run returns on the added capacity remain solid for high-consumption homes.
See Your Own Numbers
Want figures matched to your actual bill? Our Solar Calculator lets you enter your monthly DHBVN consumption, pick your area, and get an instant estimate of system size, cost, subsidy and savings.
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Going solar in Faridabad, Palwal or Gurugram has rarely made more financial sense. With the PM Surya Ghar subsidy covering a big slice of the cost and DHBVN tariffs only heading one way, a payback inside five years is realistic for most homes — followed by two decades of near-free electricity.
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