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West Delhi’s older residential pockets — JJ Colony, Moti Nagar, and the areas around them — are full of independent houses with exactly the kind of open, shadow-free terrace that makes rooftop solar work well. On 1 September 2026, Thermosun completed a 3kW rooftop solar installation at a home in JJ Colony, Moti Nagar, built on an elevated steel structure and paired with a SolaX Power grid-tied inverter. As the Best Solar Company in Delhi, Thermosun applies the same installation standards here as on any project across the city — from a compact 3kW home system like this one to large 10kW+ farmhouse installations.
Project Overview & Highlights
This Moti Nagar installation was designed to work with a compact independent-house terrace already crowded with water tanks — a common layout across West Delhi’s older colonies. Here’s exactly what was delivered:
Independent House in West Delhi?
Terraces with water tanks and tight layouts — like this Moti Nagar home — still work well for solar with the right elevated structure. A free site survey tells you exactly how much you can save.
📞 Call Now 📄 Free Site SurveyThe Elevated Structure — Why It Was Chosen for This Project
Like many independent houses in West Delhi’s older colonies, this Moti Nagar terrace had existing water storage tanks taking up ground-level space. Rather than working around them with a partially shaded flat mount, Thermosun’s team built an elevated galvanized steel structure that lifts the panel array clear above the tanks and surrounding parapet walls.
🏠 Moti Nagar & JJ Colony — Typical Rooftop Layout
Terraces in this part of West Delhi commonly have overhead water tanks, uneven boundary walls, and limited flat open space. A standard ground-mounted array here would lose several hours of peak generation to shading from the tanks alone. The elevated structure used on this project clears that obstruction entirely, keeping the full 3kW array in direct sun for the whole working day.
SolaX Power Inverter — Setup Explained
This installation uses a SolaX Power grid-tied string inverter, supplied under Tata Power Solar’s rooftop program — one of the widely used MNRE-listed inverter brands for residential systems in India. The setup includes two separate meter enclosures flanking the inverter (visible in the installation photo below): one for generation monitoring and one for the DISCOM’s net/import-export metering, both wired through conduit-protected piping for a clean, weatherproof finish.
Real Savings — What This Home Now Earns
With the array generating power, the SolaX inverter converting it, and net metering active through BRPL, here’s the estimated monthly financial picture for this 3kW system:
| Benefit | Monthly Value | Annual Value |
|---|---|---|
| Bill Reduction via Net Metering | ₹2,200 – ₹3,000 | ₹26,400 – ₹36,000 |
| Delhi GBI (₹3/unit generated, up to 3kW slab) | ₹1,000 – ₹1,200 | ₹12,000 – ₹14,400 |
| Total Monthly Financial Benefit | ₹3,200 – ₹4,200 | ₹38,400 – ₹50,400 |
📊 PM Surya Ghar Subsidy + Delhi GBI = Major Government Support
One-time PM Surya Ghar subsidy of ₹78,000 for this 3kW system, credited directly to bank account post-commissioning, plus a Delhi state capital subsidy of ₹6,000 (₹2,000/kW) adjusted in the first bill. On top of that, Delhi GBI adds ₹3/unit generated for 5 years at this system size — roughly ₹60,000–₹72,000 over the full 5-year GBI period.
Combined government support on this installation comes to roughly ₹1.44–1.56 lakh, cutting the effective solar panel cost sharply and bringing payback down to just a few years. After that, this Moti Nagar home generates free solar energy for another 20+ years.
Why West Delhi Homes Like Moti Nagar Are Great for Solar
🏘️ Independent Houses With Roof Rights
Unlike apartment blocks, independent houses in colonies like JJ Colony give the homeowner full roof rights — no society NOC needed, no shared-terrace disputes. This makes the entire process, from site survey to net-metering approval, considerably faster.
⚡ High Daytime Load From Older Wiring & Appliances
Many West Delhi homes in this belt run older ACs, coolers, and motors that draw more power than newer energy-efficient appliances. A correctly sized rooftop system offsets a proportionally larger share of that daily consumption.
What Thermosun Handled — Start to Finish
- 1Site Survey & Layout Assessment Rooftop measured around existing water tanks and boundary walls to confirm the right structure design.
- 2Elevated Structure Design Custom galvanized steel frame engineered to clear obstructions and maximise sun exposure.
- 3Procurement of ALMM-Approved Components Panels and SolaX Power inverter sourced from the MNRE-approved list for subsidy eligibility.
- 4Panel Installation on Elevated Frame Full 3kW array mounted and wired across the steel structure.
- 5Inverter & Dual Meter Box Setup SolaX inverter installed with generation and net-metering enclosures, fully conduit-protected.
- 6Safety Compliance Earthing and lightning arrester installed and documented to IS standard.
- 7DISCOM Inspection & Net Meter Work completion report filed with BRPL, inspection coordinated, bi-directional net meter installed.
- 8PM Surya Ghar & Delhi GBI Filed Complete subsidy and GBI registration submitted, bank details confirmed for DBT processing.
Independent House in West Delhi — We Cover Your Area
From Moti Nagar to Rajouri Garden, Janakpuri, and across West Delhi — Thermosun handles the complete solar installation process including subsidy and net metering.
💬 WhatsApp Now 📄 Free Site SurveyWhy Choose Thermosun for Residential Solar Installation
A tight terrace with water tanks, uneven walls, and limited flat space is a common challenge across older West Delhi colonies — and it’s exactly the kind of layout that separates an installer who templates every roof the same way from one who designs around what’s actually there. Getting the elevated structure right, choosing a reliable inverter brand like SolaX Power, and filing clean DISCOM paperwork all come from ground-level Delhi experience. Thermosun is the solar EPC company in Delhi not just because we install well, but because every project — 3kW or 10kW — gets a layout-specific design rather than a one-size-fits-all template.
More Real Installations Across Delhi
Frequently Asked Questions
Is a 3kW solar system enough for an independent house in Moti Nagar?
Yes — a 3kW system suits households consuming around 300-400 units a month, which covers most independent homes with 1-2 ACs and standard daily load. Our free site survey confirms the right size for your actual consumption.
How much subsidy does a 3kW system get under PM Surya Ghar?
A 3kW system qualifies for the full ₹78,000 central subsidy — this is the exact system size where the subsidy structure (₹30,000/kW for the first 2kW plus ₹18,000 for the 3rd kW) reaches its maximum before capping.
Why does this installation use an elevated structure instead of a flat roof mount?
The terrace had existing water tanks and boundary walls that would have shaded a flat-mounted array for several hours a day. The elevated steel structure clears these obstructions completely.
Is SolaX Power a reliable inverter brand for residential solar?
Yes — SolaX Power is a widely used, MNRE-listed grid-tied inverter brand, supplied here under Tata Power Solar’s rooftop program, one of India’s established rooftop solar providers.
How does Delhi GBI work alongside the PM Surya Ghar subsidy?
They’re separate benefits that stack. PM Surya Ghar gives a one-time central subsidy (₹78,000 for this 3kW system). Delhi’s Generation-Based Incentive then pays ₹3/unit generated for 5 years on top of that, adjusted directly against the monthly bill.
How much can a Moti Nagar household save monthly with a 3kW system?
Based on this installation, combined bill reduction and Delhi GBI income comes to approximately ₹3,200-₹4,200 per month, depending on actual generation and household consumption.
Conclusion
This Moti Nagar installation is a good example of what most West Delhi homes actually need — not a massive system, but a correctly engineered 3kW setup that works around real rooftop constraints like water tanks and tight terraces. Getting the elevated structure right, using a dependable inverter brand, and filing clean DISCOM and subsidy paperwork the first time is what makes the difference between a smooth installation and a frustrating one. For homeowners in JJ Colony, Moti Nagar, or anywhere across West Delhi considering solar installation near me, a free site survey is the fastest way to see the real numbers for your specific roof.