Last Updated: July 24, 2026
Table of Contents
Why I Chose to Install a 3kW Solar Rooftop System
With rising electricity bills year after year, switching to renewable energy was a practical and necessary decision for our household. After researching various energy-saving options and hearing success stories from friends and family, we decided to explore solar rooftop plant installation.
The turning point came in February 2024, when the Indian government launched the PM Surya Ghar Yojana, offering attractive solar panel subsidies for residential users. This scheme made the investment more affordable and motivated us to act quickly. The financial incentives, coupled with the opportunity to reduce our carbon footprint and become more energy-independent, made it a win-win situation.
We chose a 3.39 kW solar rooftop system using high-efficiency Adani solar panels and installed it with the help of a professional local installer. This review details our entire journey — from the planning and installation process to real-world performance, seasonal variations, cost savings, and overall satisfaction with the system — and I keep it updated with fresh inverter data every few months, rather than publishing it once and letting it go stale.
If you’re looking for a real user’s PM Surya Ghar 3kW solar rooftop plant review in India, including insights on government subsidies, savings, and performance, you’re in the right place.
Solar Rooftop Plant Details
Brand & Equipment:
- Solar Panels: Adani Solar Panels 565W (6 Panels)
- Inverter: EEVO Brand up to 3 kW (can perform 15% extra)
- Capacity Installed: 3.39 kW
- Panel Type: Topcon Bifacial (Monocrystalline)
- Inverter Type: String Inverter
Check Micro Inverter vs String Inverter: ROI Comparison for Indian Homes (2026 Guide)
3kW Solar Rooftop Area Required
A 3 kW solar rooftop system typically requires around 300 square feet of shadow-free roof space. The exact area depends on the type and efficiency of the solar panels used.
In my installation, approximately 300 sq. ft. of rooftop area was needed to accommodate the solar panels, mounting structure, and maintenance clearance. Before installation, ensure that the roof receives sufficient sunlight throughout the day and is free from shading caused by nearby buildings, water tanks, or trees.
Also Read: How Rooftop Solar Works in India — Net Metering & Electricity Bill Explained
Installation Experience
- Installer: Ram Solar Waves, Lucknow
- Installation Date: 17th June 2024
- Duration: 5 Days
- Net Metering & Approvals: Smooth process included in the package
- Installation Quality: 5/5
Long-Term Performance: 26 Months of Real Data (June 2024 – July 2026)
As of this update, the plant has been running for just over 25 months, and I’ve pulled the full history directly from the inverter’s monitoring app rather than reconstructing it year by year. Here’s the complete month-by-month record.
Full Generation History
| Month | Production (kWh) | Savings (₹) | Notes |
|---|---|---|---|
| Jun 2024 | 198.2 | ₹1,288 | Partial month — installed 17th |
| Jul 2024 | 357.1 | ₹2,321 | |
| Aug 2024 | 359.9 | ₹2,339 | |
| Sep 2024 | 368.3 | ₹2,394 | |
| Oct 2024 | 437.5 | ₹2,844 | |
| Nov 2024 | 336.3 | ₹2,186 | |
| Dec 2024 | 287.8 | ₹1,871 | Winter low |
| Jan 2025 | 279.1 | ₹1,814 | Winter low |
| Feb 2025 | 412.6 | ₹2,682 | Rising |
| Mar 2025 | 566.5 | ₹3,682 | Peak — highest month on record until 2026 |
| Apr 2025 | 511.8 | ₹3,327 | Excellent |
| May 2025 | 504.4 | ₹3,279 | Excellent |
| Jun 2025 | 400.4 | ₹2,603 | Good |
| Jul 2025 | 358.0 | ₹2,327 | Monsoon |
| Aug 2025 | 313.3 | ₹2,036 | Cloudy |
| Sep 2025 | 366.7 | ₹2,384 | Recovering |
| Oct 2025 | 381.4 | ₹2,479 | Clear sky |
| Nov 2025 | 356.9 | ₹2,320 | Steady |
| Dec 2025 | 242.7 | ₹1,578 | Foggy days |
| Jan 2026 | 296.9 | ₹1,930 | Higher than Jan ’25 |
| Feb 2026 | 423.6 | ₹2,753 | Higher than Feb ’25 |
| Mar 2026 | 472.3 | ₹3,070 | Lower than Mar ’25 — more cloud cover |
| Apr 2026 | 523.0 | ₹3,400 | New record for April |
| May 2026 | 529.1 | ₹3,439 | Highest month on record |
| Jun 2026 | 482.2 | ₹3,134 | Higher than Jun ’25 |
| Jul 2026* | 266.1 | ₹1,730 | Partial month, in progress — monsoon rains |
July 2026 figures are incomplete as the month is still ongoing at the time of this update, and generation is further reduced by monsoon cloud cover — not comparable to a full month yet.
Totals so far: ~₹52,600 in cumulative savings since installation (June 2024 – June 2026, complete months only).
Key Observations
- Peak Generation Season: March, April, and May consistently produce the most power, with May 2026 (529.1 kWh) now the highest month on record, edging past March 2025.
- Monsoon Impact: July and August reliably dip due to cloud cover, but the system has never dropped below ~300 kWh in a complete monsoon month.
- Winter Drop: December and January are consistently the lowest generation months due to shorter days and fog — this has held true across all three winters so far.
Is the System Degrading? Here’s What Two Years of Data Actually Shows
This is a question I get asked a lot, and I want to answer it honestly rather than just insisting everything is perfect.
Comparing the same calendar months year-over-year (using only complete months, since July 2026 isn’t finished yet):
| Month | 2025 (kWh) | 2026 (kWh) | Change |
|---|---|---|---|
| Jan | 279.1 | 296.9 | +6.4% |
| Feb | 412.6 | 423.6 | +2.7% |
| Mar | 566.5 | 472.3 | −16.6% |
| Apr | 511.8 | 523.0 | +2.2% |
| May | 504.4 | 529.1 | +4.9% |
| Jun | 400.4 | 482.2 | +20.4% |
Jan–Jun 2026 total: 2,727.1 kWh vs. Jan–Jun 2025 total: 2,674.8 kWh — an increase of about 2%.
Four of six months came in higher in 2026 than the same month in 2025. The one clear dip, March, lines up with a noticeably cloudier month rather than any fault or fall-off in the panels — the inverter app’s daily logs showed exactly the kind of intermittent, choppy output you’d expect from cloud cover, not the flatter under-performance you’d see from dust buildup or panel aging.
My honest read: I’m not seeing measurable degradation yet. Manufacturer performance warranties typically account for 0.5–1% annual degradation, which would be far too small to detect reliably against normal weather variation with only two years of data. I’ll keep running this same-month comparison every year going forward — a real, multi-year, same-owner degradation track record is something most solar content in India doesn’t have, and it’ll become more meaningful as the dataset grows.
Also Read: Solar Rooftop Plant Facts in India — 11 Points Every User Must Know
What Explains the Month-to-Month Swings
A few real, first-hand factors affect output beyond just “sunny vs. cloudy”:
- Dust accumulation: Based on my own before/after cleaning tests, dirty panels dropped peak output to around 2.8 kW, and cleaning restored it to roughly 3.1 kW — a meaningful daily difference. Full details and my cleaning method are in my Solar Panel Cleaning Guide.
- Cloud cover, not just rain: Even non-rainy overcast days visibly cut daily generation — this shows up clearly in the daily inverter logs during “Cloudy” months in the table above.
- Panel temperature in peak summer: Contrary to the assumption that more sun always means more power, very high panel temperatures during May–June actually reduce efficiency somewhat, which is part of why summer output plateaus rather than climbing indefinitely.
Financial Savings Analysis
Based on the “Anticipated Yield” figures logged directly by the inverter, at the local tariff rate of ₹6.5/unit configured in the system:
- 2025 (full year): ~₹30,509 in value generated
- Cumulative since installation (June 2024 – June 2026, complete months): approximately ₹52,600
The system runs at close to a 100% self-use ratio for most of the year, meaning nearly every unit generated is consumed directly rather than exported — maximizing the return on the investment.
Cost Breakdown & Subsidy Details
| Item | Amount |
|---|---|
| Total System Cost | ₹2,03,400 |
| Central Government Subsidy | ₹78,000 |
| Uttar Pradesh State Subsidy | ₹30,000 |
| Total Subsidy From PM Surya Ghar Yojana + UP State | ₹1,08,000 |
| Net Cost After Subsidy | ₹95,400 |
| Estimated Payback Period | 3.5 years |
| Annual Maintenance Cost | ₹0 |
Monthly Electricity Bill Savings
- Summer: ~40% lower bills than pre-solar
- Monsoon: ~30% lower (partly offset by higher AC usage during humid days)
- Winter: ~90% savings (only the fixed connection/rental charge remains)
Maintenance and Support
- Cleaning Frequency: Every 15 days
- Service Rating: 5/5
- Downtime: None reported in 25+ months
- Warranty: Panels — 25 years · Inverter — 8 years · Installation — 5 years
Challenges Faced
During Installation: Some delays on the subsidy portal side (PM Surya Ghar Yojana national portal), which is common — patience helps here, and matching your bank details exactly to your electricity bill avoids most of the back-and-forth.
Solar Rooftop Plant Advantages: A Real-World Perspective
Based on 25+ months of first-hand data from Lucknow:
- Drastic drop in electricity bills — up to 90% in winter, ~40% in summer.
- Attractive government subsidies — up to ₹1,08,000 combined Central + UP State subsidy on a 3kW system, cutting the payback period to roughly 3.5 years.
- Grid independence via net metering — excess daytime generation is banked with the DISCOM and offsets future consumption.
- Real carbon offset — an estimated 3.31 tons of CO2 offset in the first 18 months alone.
- No measurable degradation so far — two years of same-month data shows output holding steady, roughly in line with (or slightly ahead of) the prior year.
Frequently Asked Questions
1. 3 kW solar panel produces how many units generates per day?
Based on 25+ months of data in Lucknow, a 3.39 kW system generates an average of 12–15 units per day during sunny months (March–June). In peak winter or heavy monsoon months, this can drop to 8–10 units, though Topcon Bifacial panels perform slightly better in low-light conditions.
2. Is the PM Surya Ghar Yojana subsidy actually credited to the bank account?
Yes. In my experience, the process was smooth but required patience. After net meter installation and DISCOM inspection, the central subsidy (₹78,000) and UP state subsidy (₹30,000) were credited within a few weeks. Make sure your bank details on the national portal match your electricity bill exactly.
3. What is the real-world payback period for a 3kW solar system?
With a net investment of approximately ₹95,400 (after the ₹1.08 lakh subsidy) and annual savings of roughly ₹30,000 on electricity bills, the payback period works out to about 3.2–3.5 years. After that, generation is effectively free for the remaining 20+ years of the panels’ rated life.
4. Does a 3kW system degrade noticeably over time?
Not in my experience so far. Comparing complete months year-over-year, 2026 generation is running about 2% higher than the same period in 2025. I’ll keep updating this comparison annually as more data comes in.
Final Verdict — Would I Recommend It?
Absolutely yes. Installing a solar rooftop plant has been one of the most rewarding decisions we’ve made, for both our finances and the environment. Electricity bills have dropped significantly, especially during summer and spring, and the return on investment looks strong with a payback period of around 3.5 years.
Beyond the numbers, the satisfaction of using clean, renewable energy and reducing dependence on the traditional power grid is real. The process, from installation to activation with Ram Solar Waves, was smooth and hassle-free, supported by the PM Surya Ghar Yojana. With zero maintenance costs so far and consistent performance across three winters and two full summers now, the system has held up to expectations — and I’ll keep this article updated as more data comes in.
For any questions or to share your own solar story, feel free to contact us at [email protected]
Related reading:
- How Rooftop Solar Works in India — Net Metering & Electricity Bill Explained
- How On-Grid Solar System Works — Complete Guide
- Solar Rooftop Plant Facts in India — 11 Points Every User Must Know
- Solar Panel Cleaning Guide
- Micro Inverter vs String Inverter: ROI Comparison for Indian Homes (2026 Guide)
Ayush Singhal is the founder and chief editor of TechMitra.in — a tech hub dedicated to simplifying gadgets, AI tools, and smart innovations for everyday users. With over 15 years of business experience, a Bachelor of Computer Applications (BCA) degree, and 5 years of hands-on experience running an electronics retail shop, Ayush brings real-world gadget knowledge and a genuine passion for emerging technology.
At TechMitra, he covers everything from AI breakthroughs and gadget reviews to app guides, mobile tips, and digital how-tos. His goal is simple — to make tech easy, useful, and enjoyable for everyone. When he’s not testing the latest devices or exploring AI trends, Ayush spends his time crafting tutorials that help readers make smarter digital choices.
📍 Based in Lucknow, India
💡 Focus Areas: Tech News • AI Tools • Gadgets • Digital How-Tos
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