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Every rooftop solar EPC company in Delhi eventually runs into the same problem: a terrace that looks solar-ready in theory but is actually packed with water tanks, pipes, and antennas in practice. On 14 September 2026, Thermosun completed a 3kW rooftop solar installation in Fauji Colony, Mukundpur, on a terrace crowded with five large water storage tanks — one of the more space-constrained roofs our team has worked around this year.
Project Overview & Highlights
Rooftop solar installation in Delhi rarely happens on a completely clear terrace, and this Mukundpur project is a good example of that. Here’s exactly what was delivered:
Terrace Packed With Water Tanks in North Delhi?
A crowded rooftop doesn’t rule out solar for home — it just changes the structure design. A free site survey confirms exactly what your specific roof needs.
📞 Call Now 📄 Free Site SurveyDesigning Around Five Water Tanks
This Fauji Colony terrace had five large Sintex water tanks positioned across nearly the entire sun-facing section of the roof — more than Thermosun typically encounters on a single residential rooftop. A standard flat mount simply wasn’t an option here; it would have shaded most of the array for a large part of the day.
🏗️ Going Taller When the Roof Demands It
Our site survey mapped the height and footprint of all five tanks before finalising the structure. The solution was a taller-than-usual elevated galvanized steel frame, engineered to lift the full 3kW array clear above every tank while still distributing load safely across the terrace’s structural points. It’s a good example of why a generic “one structure fits all roofs” approach doesn’t work for solar installation company Delhi projects — every terrace needs its own read before the panels go up.
Sungrow Inverter — DC/AC Setup Explained
This installation uses a Sungrow grid-tied string inverter, paired with a labelled DC panel box (isolator and fuse protection on the array side) and an AC panel box (MCB and isolator on the grid side), both routed through surface conduit for a clean, weatherproof finish.
Net Metering With TPDDL — What Actually Happens
Mukundpur falls under Tata Power Delhi Distribution Limited (TPDDL), the DISCOM covering most of North and North-West Delhi. Once the panels and inverter were commissioned, Thermosun filed the net metering application directly through TPDDL’s system — the DISCOM inspects the installation, confirms the setup matches what was declared, and then installs a bi-directional meter that tracks both the power drawn from the grid and the surplus the system exports back.
From that point, every billing cycle nets the two off automatically. On a 3kW system generating more than the household consumes during sunlight hours, the exported surplus directly reduces what shows up on the bill — this is the mechanism behind most of the monthly savings described below.
Real Savings — What This Home Now Earns
With the array generating power and net metering active, here’s the estimated monthly financial picture for this 3kW system:
| Benefit | Monthly Value | Annual Value |
|---|---|---|
| Bill Reduction via Net Metering | ₹2,200 – ₹3,200 | ₹26,400 – ₹38,400 |
| Delhi GBI (₹3/unit generated, up to 3kW slab) | ₹1,000 – ₹1,200 | ₹12,000 – ₹14,400 |
| Total Monthly Financial Benefit | ₹3,200 – ₹4,400 | ₹38,400 – ₹52,800 |
📊 What Solar Subsidy Actually Covers Here
This 3kW system qualifies for the full ₹78,000 PM Surya Ghar central subsidy, plus up to ₹6,000 in Delhi state capital subsidy, on top of the ongoing Delhi GBI incentive. If you want the fuller picture on what’s currently confirmed versus still pending in Delhi’s solar policy — including the recently discussed ₹1.08 lakh, ₹1.56 lakh, and ₹1.75 lakh figures — we’ve broken it down in detail in our Delhi Solar Subsidy 2026 guide.
What Thermosun Handled — Start to Finish
- 1Site Survey & Tank Mapping All five water tanks measured for height and position before finalising the structure design.
- 2Tall Elevated Structure Design Custom galvanized steel frame engineered to clear every tank on the terrace.
- 3Procurement of ALMM-Approved Components Panels and Sungrow 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 & DC/AC Panel Box Setup Sungrow inverter installed with labelled DC and AC boxes, fully conduit-protected.
- 6Safety Compliance Earthing and protective wiring documented to IS standard.
- 7TPDDL Inspection & Net Meter Net metering application filed, inspection coordinated, bi-directional meter installed.
- 8PM Surya Ghar & Delhi GBI Filed Complete subsidy and GBI registration submitted, bank details confirmed for DBT processing.
North Delhi Rooftop, Any Layout — We Cover Your Area
From Mukundpur and Jagatpur to Model Town, Rohini, and across TPDDL’s zone — Thermosun designs around whatever your terrace actually looks like.
💬 WhatsApp Now 📄 Free Site SurveyWhy Choose Thermosun
Not every roof arrives clear and ready — most have tanks, pipes, satellite dishes, or antennas somewhere in the way, and a five-tank terrace like this Fauji Colony property is a real test of whether an installer actually surveys before quoting. This is why Thermosun is considered the best solar company in Delhi by homeowners who’ve dealt with installers that skip the details: every project gets a proper site read, correct DISCOM filing, and a structure built for the roof that’s actually there. As a solar EPC company in Delhi handling everything from design to net metering to subsidy paperwork, we make rooftop solar installation Delhi homeowners can trust from survey to commissioning.
More Real Installations Across Delhi
Frequently Asked Questions
Can solar panels be installed on a roof crowded with multiple water tanks?
Yes — a tall elevated structure, sized to clear every tank’s height and position, works well even on a heavily crowded terrace like this five-tank Mukundpur roof.
Which DISCOM handles net metering in Mukundpur?
Mukundpur falls under TPDDL (Tata Power Delhi Distribution Limited), which covers most of North and North-West Delhi. Applications go through TPDDL’s own net-metering system.
How does net metering actually reduce my electricity bill?
A bi-directional meter tracks both what you draw from the grid and what your system exports back to it. Your DISCOM nets the two off at billing, so surplus solar generation directly offsets your consumption.
How much solar subsidy applies to a 3kW system in Delhi?
A 3kW system qualifies for the full ₹78,000 PM Surya Ghar central subsidy plus up to ₹6,000 in Delhi state capital subsidy, with the Delhi GBI adding ongoing per-unit income for 5 years.
Is Sungrow a good inverter brand for a home solar system?
Yes — Sungrow is a widely used, MNRE-listed grid-tied inverter brand suitable for both residential and commercial rooftop solar, used here for this Mukundpur installation.
How much can a Mukundpur household save monthly with a 3kW system?
Based on this installation, combined bill reduction and Delhi GBI income comes to approximately ₹3,200-₹4,400 per month, depending on actual generation and household consumption.
Conclusion
This Fauji Colony installation is a solid example of what most “difficult roof” solar projects in Delhi actually look like — not impossible, just requiring a structure built for the specific obstacles on that terrace rather than a generic template. Mapping all five tanks before designing the frame, filing correctly with TPDDL, and setting up clean net metering is what turned a crowded rooftop into a working 3kW system. For homeowners anywhere in Mukundpur, North Delhi, or beyond wondering if their own tank-heavy or obstacle-filled terrace can still go solar, a free site survey gives a definitive answer.