📋 Table of Contents
- Project Overview & Highlights
- Installing on a Tin-Roof Home — Why the Approach Was Different
- Solare 5G Pro Inverter — DC/AC Panel Setup Explained
- Real Savings — What This Home Now Earns
- Why East Delhi Homes Like Patparganj Work Well for Solar
- What Thermosun Handled — Start to Finish
- Why Choose Thermosun
- Frequently Asked Questions
Not every rooftop in Delhi is a flat RCC terrace — a large share of East Delhi’s older colonies, including Patparganj and Madhu Vihar, still run on traditional GI sheet (tin) roofing. On 4 September 2026, Thermosun completed a 5kW rooftop solar installation on exactly this kind of roof in I.P. Extension, Patparganj, proving that a tin roof is no barrier to going solar when the mounting is engineered correctly. As the Best Solar Company in Delhi, Thermosun designs around whatever roof a home actually has — RCC terrace, elevated structure, or corrugated sheet — rather than forcing a one-size-fits-all setup.
Project Overview & Highlights
This Patparganj installation was built directly onto the home’s existing corrugated GI sheet roof, in a narrow lane setting typical of Madhu Vihar and I.P. Extension. Here’s exactly what was delivered:
Have a Tin-Roof or GI Sheet House in East Delhi?
Homes in Patparganj, Madhu Vihar, and similar colonies can go solar even on a corrugated sheet roof — a free site survey confirms the right mounting approach and expected savings for your specific roof.
📞 Call Now 📄 Free Site SurveyInstalling on a Tin-Roof Home — Why the Approach Was Different
Most solar case studies talk about RCC terraces or elevated steel frames. This Patparganj home has neither — it’s built with a corrugated GI sheet roof, common across older East Delhi colonies where houses were extended informally over the years. Rather than building a heavy elevated structure that this lighter roof wasn’t designed to bear, Thermosun’s team mounted the array to follow the roof’s natural slope, using lightweight rail-mounted brackets anchored directly into the sheet’s structural ridges.
🏚️ Why Slope-Mounting Made Sense Here
A heavy elevated frame adds significant point-load stress that a GI sheet roof — supported on relatively thin purlins — isn’t built to carry safely. By mounting panels along the existing slope instead, the installation avoids overloading the roof structure while still achieving a workable tilt angle for generation. The narrow lane and neighbouring multi-storey buildings visible around this property also meant the exact panel placement had to be checked carefully against shadow timing through the day — something our site survey accounted for before finalising the layout.
Solare 5G Pro Inverter — DC/AC Panel Setup Explained
This installation runs on a Solare 5G Pro grid-tied string inverter, flanked by a labelled DC panel box (isolator and fuse protection on the panel side) and an AC panel box (MCB and isolator on the grid side) — both wired through surface-mounted conduit for a clean, weatherproof finish inside the utility area. This DC/AC split is what allows safe isolation of the system for maintenance or emergencies without touching the grid connection directly.
Real Savings — What This Home Now Earns
With the array generating power, the Solare inverter converting it, and net metering active through BYPL, here’s the estimated monthly financial picture for this 5kW system:
| Benefit | Monthly Value | Annual Value |
|---|---|---|
| Bill Reduction via Net Metering | ₹2,500 – ₹4,500 | ₹30,000 – ₹54,000 |
| Delhi GBI (₹2/unit generated, 3–10kW slab) | ₹600 – ₹1,200 | ₹7,200 – ₹14,400 |
| Total Monthly Financial Benefit | ₹3,100 – ₹5,700 | ₹37,200 – ₹68,400 |
📊 PM Surya Ghar Subsidy + Delhi GBI = Major Government Support
One-time PM Surya Ghar subsidy up to ₹78,000 credited to bank account post-commissioning, plus a Delhi state capital subsidy of ₹10,000 (₹2,000/kW, capped) adjusted in the first bill. On top of that, Delhi GBI adds ₹2/unit generated for 5 years at this system size. Combined government support on this installation can exceed ₹1.20–₹1.64 lakh — substantially reducing the effective solar panel cost and shortening payback to just 4–5 years.
After payback, this Patparganj home generates essentially free solar energy for another 20+ years.
Why East Delhi Homes Like Patparganj Work Well for Solar
🏠 Roof Ownership Without Society Approval
Like most independent houses across Madhu Vihar and I.P. Extension, this property gave the homeowner full roof rights — no RWA or society NOC required, which meant Thermosun could move from site survey to installation without the delays common in group-housing societies.
⚡ Consistent Daytime Load in Mixed-Use Colonies
Many homes in this belt run small ground-floor shops or home businesses alongside residential use, adding daytime electricity load that a rooftop system offsets directly — improving the payback math compared to homes that only draw power in the evenings.
What Thermosun Handled — Start to Finish
- 1Site Survey & Roof Assessment GI sheet roof condition, slope angle, and structural capacity checked before finalising the mounting method.
- 2Slope-Aligned Mounting Design Lightweight rail-mount brackets designed to follow the existing roof slope without adding excess load.
- 3Procurement of ALMM-Approved Components Panels and Solare 5G Pro inverter sourced from the MNRE-approved list for subsidy eligibility.
- 4Panel Installation Along Roof Slope Full 5kW array mounted and wired directly onto the tin roof structure.
- 5Inverter & DC/AC Panel Box Setup Solare inverter installed with labelled DC and AC boxes, fully conduit-protected.
- 6Safety Compliance Isolators, fuses, and protective wiring documented to IS standard for both DC and AC sides.
- 7DISCOM Inspection & Net Meter Work completion report filed with BYPL, 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.
Tin Roof, Terrace, or Elevated Structure — We Cover Your Area
From Patparganj and Madhu Vihar to Mayur Vihar, Preet Vihar, and across East Delhi — Thermosun handles the complete solar installation process including subsidy and net metering, whatever your roof type.
💬 WhatsApp Now 📄 Free Site SurveyWhy Choose Thermosun for Solar on Non-Standard Roofs
A corrugated GI sheet roof in a narrow East Delhi lane isn’t the easiest install — it demands a mounting approach suited to the roof’s actual load capacity, careful shadow-mapping around neighbouring buildings, and clean DISCOM paperwork with BYPL rather than assuming every project runs through the same DISCOM. This kind of roof-specific engineering is exactly what 1,000+ completed installations across Delhi have taught our team. Thermosun is the solar epc company in Delhi not just because we install well on RCC terraces, but because we adapt the design for tin roofs, elevated structures, and everything in between.
More Real Installations Across Delhi
Frequently Asked Questions
Can solar panels be installed on a tin or GI sheet roof in Delhi?
Yes — with the right mounting approach. Rather than adding a heavy elevated structure, panels can be rail-mounted along the roof’s existing slope, as done on this Patparganj installation, avoiding excess load on the sheet and its supporting purlins.
Is BYPL or BRPL the DISCOM for Patparganj and Madhu Vihar?
Patparganj and Madhu Vihar fall under BSES Yamuna Power Limited (BYPL) territory, since this is East Delhi. Thermosun’s liaisoning team files net-metering applications directly with BYPL for properties in this zone.
How much subsidy does a 5kW system get under PM Surya Ghar?
A 5kW system qualifies for the full ₹78,000 central subsidy cap, the same maximum available to any system 3kW and above, since the subsidy plateaus after the 3rd kW.
What is the Solare 5G Pro inverter used in this installation?
It’s an MNRE-listed grid-tied string inverter used to convert the DC power generated by the panels into usable AC power synced with the grid — required for any net-metered rooftop solar installation.
Do narrow lanes and nearby tall buildings affect solar generation?
They can, if not accounted for. Thermosun’s site survey maps shadow patterns from neighbouring structures through the day before finalising panel placement, which is exactly what was done for this Patparganj project.
How much can a Patparganj household save monthly with a 5kW system?
Based on this installation, combined bill reduction and Delhi GBI income comes to approximately ₹3,100-₹5,700 per month, depending on actual generation and household consumption.
Conclusion
This Patparganj installation is proof that a traditional GI sheet roof doesn’t rule out solar — it just requires an installer willing to design around the roof that actually exists, rather than forcing a standard elevated-structure template onto every project. Correct slope-mounting, a dependable inverter, and clean BYPL paperwork are what made this a smooth 5kW installation. For homeowners in Madhu Vihar, I.P. Extension, or anywhere across East Delhi with a similar tin-roof or non-standard property wondering if solar installation near me is realistic for their home, a free site survey is the fastest way to find out.