If your BSES or Tata Power-DDL bill has been climbing every quarter, you’re not imagining it. Delhi’s residential electricity tariffs have seen consistent upward revisions, and with peak summer consumption driving monthly bills well past ₹6,000–₹12,000 for mid-to-large homes, the financial pressure is real. That’s why more Delhi homeowners and businesses are now turning to the best solar company in Delhi to make the switch to rooftop solar — and it’s not just about saving the planet anymore. It’s about protecting your household finances from a cost that only goes in one direction.
The good news is that 2026 is arguably the best year to go solar in Delhi. Panel prices have stabilised, the PM Surya Ghar Muft Bijli Yojana offers direct bank subsidies of up to ₹78,000, and Delhi’s net metering policy through BSES and TPDDL allows you to earn credits for every surplus unit you export. PM Surya Ghar Yojana Guide
In this guide, we break down the complete solar panel installation cost in Delhi for 2026 — from a 1kW setup for a small apartment to a 20kW+ commercial system for a factory or institution. Real numbers, real savings, and no vague generalisations.
Solar Panel Installation Cost in Delhi (2026 Updated)
The total solar panel installation cost in Delhi includes panels, inverter, mounting structure, DC/AC wiring, protection devices, and basic installation labour. Net metering application charges are typically billed separately. Here is what the current market looks like:
| System Size | Avg. Cost (Before Subsidy) | After PM Surya Ghar Subsidy | Suitable For | Monthly Savings (Est.) |
|---|---|---|---|---|
| 1 kW | ₹55,000 – ₹70,000 | ₹25,000 – ₹40,000 | 1 BHK / Small Flat | ₹800 – ₹1,200 |
| 2 kW | ₹1,10,000 – ₹1,40,000 | ₹50,000 – ₹80,000 | 2 BHK Home | ₹1,500 – ₹2,200 |
| 3 kW | ₹1,65,000 – ₹2,10,000 | ₹87,000 – ₹1,32,000 | 2–3 BHK Home | ₹2,200 – ₹3,200 |
| 5 kW | ₹2,75,000 – ₹3,50,000 | ₹1,97,000 – ₹2,72,000 | 3–4 BHK / Office | ₹3,500 – ₹5,000 |
| 10 kW | ₹5,50,000 – ₹7,00,000 | ₹4,72,000 – ₹6,22,000 | Large Home / SME | ₹7,000 – ₹10,000 |
| 20 kW+ | ₹11,00,000 – ₹16,00,000 | No residential subsidy | Factory / Institution | ₹15,000 – ₹25,000+ |
Factors That Affect Solar Panel Installation Cost in Delhi
No two rooftop solar installations are priced identically. The following variables directly influence your final solar panel cost in Delhi:
🏠 Roof Type and Condition
Flat RCC rooftops — the most common in Delhi’s residential colonies — require standard mounting structures and minimal preparation. Sloped roofs (common in older bungalows) or structurally compromised roofs require custom frames or reinforcement, adding ₹10,000–₹40,000 to the project cost.
☀️ Solar Panel Brand and Technology
Tier-1, ALMM-listed panels from brands like Adani Solar, Waaree, and Vikram Solar cost more than unverified imports — but come with 25-year performance warranties and consistent output. In Delhi’s dusty, high-temperature summers, panel quality directly impacts long-term savings.
⚡ Inverter Type
A standard on-grid string inverter (₹35,000–₹80,000 for 5kW) costs significantly less than a hybrid inverter with battery readiness (₹90,000–₹1,80,000). Choosing the right inverter type for your actual needs — rather than upselling you to a more expensive configuration — is a key differentiator among installers.
🔧 Installation Complexity
Multi-storey properties with limited roof access, longer cable runs from the roof to the main distribution board, and three-phase electrical connections all add to labour time and material costs. Ground-floor properties with open rooftops are the simplest — and cheapest — to install.
📋 Net Metering Charges
Net metering in Delhi requires a bi-directional meter installed by your DISCOM (BSES or TPDDL). Application fees range from ₹5,000–₹15,000 and vary by system size and DISCOM. A good solar EPC company in Delhi handles this coordination end-to-end so you don’t have to deal with DISCOM offices yourself.
💰 Government Subsidy
The PM Surya Ghar subsidy (up to ₹78,000 for systems above 3kW) is the single biggest variable in your net cost. Only MNRE-approved installers can process subsidy applications. Working with an unregistered vendor means losing this benefit entirely — a mistake that costs tens of thousands of rupees.
Solar Panel Cost by System Size — Detailed Breakdown
Here is what each system size actually delivers for a Delhi household, using real generation data based on the city’s 5–5.5 peak sun hours per day.
1kW Solar System Cost in Delhi
A 1kW system is suitable for small apartments or households with low consumption — typically those with a monthly bill below ₹1,500. It requires around 80–100 sq. ft. of rooftop space and generates 4–5 units per day.
- Pre-subsidy cost: ₹55,000–₹70,000
- Post-subsidy cost: ~₹25,000–₹40,000
- Monthly generation: 120–150 units
- Payback period: 4–5 years
2kW Solar System Cost in Delhi
Ideal for 2 BHK homes running fans, lights, TV, refrigerator, and a washing machine. Requires 160–200 sq. ft. of unshaded rooftop.
- Pre-subsidy cost: ₹1,10,000–₹1,40,000
- Post-subsidy cost: ~₹50,000–₹80,000
- Monthly generation: 240–300 units
- Payback period: 4–5 years
3kW Solar Panel Cost Delhi
The most popular choice for 2–3 BHK homes in Delhi. Generates enough power to run lights, fans, a refrigerator, TV, washing machine, and one inverter AC during daylight hours. 3kW Solar Panel Cost Delhi
- Pre-subsidy cost: ₹1,65,000–₹2,10,000
- Post-subsidy cost: ~₹87,000–₹1,32,000
- Monthly generation: 360–480 units
- Monthly savings: ₹2,200–₹3,200
- Payback period: 4–5 years
5kW Solar Panel Cost Delhi
Well-suited for 3–4 BHK homes or small offices with multiple ACs, a high-end kitchen, and consistent daytime power usage. 5kW Solar Panel Cost Delhi
- Pre-subsidy cost: ₹2,75,000–₹3,50,000
- Post-subsidy cost: ~₹1,97,000–₹2,72,000
- Monthly generation: 510–660 units
- Monthly savings: ₹3,500–₹5,000
- Payback period: 5–6 years
10kW Solar System Cost in Delhi
Ideal for large independent homes, clinics, small offices, or commercial setups with consistent daytime electricity loads exceeding 800–1,000 units per month.
- Pre-subsidy cost: ₹5,50,000–₹7,00,000
- Post-subsidy cost: ~₹4,72,000–₹6,22,000
- Monthly generation: 1,020–1,320 units
- Monthly savings: ₹7,000–₹10,000
- Payback period: 5–7 years
| System Size | Monthly Units Generated | Monthly Savings (Est.) | Annual Savings | Payback Period |
|---|---|---|---|---|
| 1 kW | 120–150 units | ₹800–₹1,200 | ~₹12,000 | 4–5 years |
| 2 kW | 240–300 units | ₹1,500–₹2,200 | ~₹22,000 | 4–5 years |
| 3 kW | 360–480 units | ₹2,200–₹3,200 | ~₹32,000 | 4–5 years |
| 5 kW | 510–660 units | ₹3,500–₹5,000 | ~₹52,000 | 5–6 years |
| 10 kW | 1,020–1,320 units | ₹7,000–₹10,000 | ~₹1,00,000 | 5–7 years |
Residential vs Commercial Solar Installation Cost in Delhi
Residential solar installation in Delhi and commercial solar installation in Delhi follow the same core technology but differ significantly in scale, ROI timelines, and financial treatment.
| Parameter | Residential Solar | Commercial Solar |
|---|---|---|
| Typical System Size | 1kW – 10kW | 10kW – 500kW+ |
| Installation Cost | ₹55,000–₹70,000/kW | ₹45,000–₹60,000/kW |
| Government Subsidy | Up to ₹78,000 (PM Surya Ghar) | No residential subsidy; CAPEX/OPEX models |
| ROI | ₹15–₹35 lakh over 25 years | ₹50 lakh – ₹5 crore+ over 25 years |
| Payback Period | 4–7 years | 3–5 years (higher daytime load) |
| Electricity Savings | 60–90% bill reduction | 40–70% reduction in tariff costs |
| Net Metering | Fully supported via BSES/TPDDL | Supported with DISCOM approval |
| Maintenance | AMC ₹5,000–₹15,000/year | AMC ₹20,000–₹1,00,000/year |
For businesses — factories, schools, hospitals, clinics, hotels — commercial solar installation delivers faster payback because daytime electricity consumption is typically consistent and high, maximising direct self-consumption rather than grid export. A rooftop solar installation in Delhi NCR for a commercial property is one of the highest-ROI capital expenditures available to business owners today. Solar EPC Company in Delhi
Government Solar Subsidy in Delhi — PM Surya Ghar Yojana (2026)
The PM Surya Ghar Muft Bijli Yojana is the most significant solar subsidy programme India has ever introduced. For Delhi homeowners, the solar subsidy Delhi provides a direct cash benefit that meaningfully reduces upfront installation cost.
🎯 Current MNRE Subsidy Structure
• 1kW system → ₹30,000 subsidy
• 2kW system → ₹60,000 subsidy
• 3kW and above → ₹78,000 maximum (capped)
• Transferred via Direct Benefit Transfer (DBT) to your bank account within 30–60 days of commissioning
• Only available through MNRE-registered vendors on pmsuryaghar.gov.in
Eligibility Criteria
- Indian citizen with an active residential electricity connection
- Own or have legal occupancy of the property
- Installation done by an MNRE-empanelled vendor only
- System capacity within sanctioned load approved by DISCOM
- Only one subsidy per electricity connection
Documents Required
- Aadhaar Card (linked to mobile number)
- Latest electricity bill (BSES or TPDDL)
- Bank passbook or cancelled cheque
- Property/rooftop ownership proof
- Passport-size photograph
How to Apply — Step by Step
- Register on pmsuryaghar.gov.in with your DISCOM account details
- Select an MNRE-empanelled vendor from the portal (Thermosun is registered)
- Get a site survey and receive a formal quotation
- Installation completed — DISCOM inspection follows
- Bi-directional net meter installed by DISCOM
- Solar Commissioning Certificate generated online
- Submit bank details and cancelled cheque on portal
- Subsidy credited to your bank account within 30–60 days
On-Grid vs Off-Grid vs Hybrid Solar System Cost in Delhi
Choosing the right system type is as important as choosing the right size. Each configuration has different costs, benefits, and ideal use cases for Delhi’s specific grid conditions.
| Parameter | On-Grid | Off-Grid | Hybrid |
|---|---|---|---|
| System Cost (5kW) | ₹2,75,000–₹3,50,000 | ₹5,00,000–₹7,00,000 | ₹4,50,000–₹6,50,000 |
| Battery Required | No | Yes (large bank) | Optional |
| Works During Outage | No (shuts down) | Yes | Yes (with battery) |
| Net Metering | ✅ Fully supported | ❌ Not applicable | ✅ Supported |
| Subsidy Eligible | ✅ Yes | ❌ No | ✅ On solar component |
| Best For | Stable grid areas — most of Delhi | Remote / no-grid properties | Areas with frequent outages |
| Maintenance | Minimal | High (battery upkeep) | Moderate |
| ROI | Best (lowest cost, subsidy eligible) | Slowest (high battery cost) | Good (backup + grid export) |
For most Delhi homes and businesses with a stable BSES or TPDDL grid connection, the on-grid system delivers the fastest payback and the best overall financial return. A hybrid system makes sense if your area experiences outages lasting more than 2–4 hours daily. Off-grid is rarely the right choice within Delhi city limits.
How Much Can You Actually Save with Solar in Delhi?
Here are three real-world scenarios using Delhi’s current BSES/TPDDL slab tariff structure — showing exactly what solar delivers depending on your current electricity bill.
- Recommended: 3kW system
- Net cost after subsidy: ~₹1,00,000
- Monthly saving: ₹2,000–₹2,500
- Annual saving: ~₹28,000
- Payback period: 4–5 years
- 25-year saving: ₹12–₹18 lakh
- Recommended: 5kW system
- Net cost after subsidy: ~₹2,10,000
- Monthly saving: ₹3,500–₹4,500
- Annual saving: ~₹50,000
- Payback period: 4–5 years
- 25-year saving: ₹20–₹28 lakh
- Recommended: 8–10kW system
- Net cost after subsidy: ~₹4,80,000
- Monthly saving: ₹7,000–₹9,000
- Annual saving: ~₹95,000
- Payback period: 5–6 years
- 25-year saving: ₹35–₹45 lakh
Why Choose Thermosun Engineering and Power India Pvt. Ltd.
With dozens of rooftop solar companies operating in Delhi NCR today, the real question is not just who offers the lowest quote — it’s who will still be answering your calls in year 10 when an inverter needs attention. Thermosun has built its reputation as the best solar EPC company in Delhi on a track record that is verifiable, not just claimed.
✅ 1,000+ Successful Installations
Over a thousand completed rooftop solar projects across residential, commercial, and institutional properties in Delhi NCR — with documented performance records and satisfied customers you can speak to.
🏛️ MNRE Approved Installer
Fully registered on pmsuryaghar.gov.in and empanelled with BSES Rajdhani, BSES Yamuna, and Tata Power-DDL. Every installation we complete is subsidy-eligible.
🏗️ Government Project Credentials
Thermosun has successfully executed solar projects for Delhi Fire Stations, Tees Hazari Court, and Tihar Jail — institutional-grade credentials that demonstrate our technical and project management capability.
⚡ Tier-1 Products Only
We install panels and inverters from Adani Solar, Waaree, Vikram Solar, Luminous, and Polycab — all ALMM-listed, all backed by manufacturer warranties. No unverified imports, no shortcuts.
📋 Free Site Survey
Every project starts with a professional on-site assessment — shadow mapping, load analysis, roof feasibility — completely free. We give you a number you can trust before you commit to anything.
🤝 Complete After-Sales Support
Our local Delhi NCR service team handles AMC, monitoring, cleaning, inverter servicing, and warranty claims. You’re not passed to a third party after installation day.
As a trusted solar energy company in Delhi, Thermosun manages every step — from system design and procurement to installation, net metering coordination, and PM Surya Ghar subsidy processing. Best Solar Company in Delhi
Areas We Serve in Delhi NCR
Thermosun provides rooftop solar installation across all major residential, commercial, and industrial zones in Delhi and the surrounding NCR region. As a leading solar installation company in NCR, we have active installation experience in each of the following areas:
If your location is not listed above, contact us directly — we evaluate all Delhi NCR requests. Our local team ensures faster site surveys, quicker installations, and dependable after-sales support across the entire region.
Frequently Asked Questions
Conclusion
The solar panel installation cost in Delhi in 2026 is more accessible than it has ever been — and the financial return is stronger than ever. With per-kW costs of ₹55,000–₹70,000, PM Surya Ghar subsidies of up to ₹78,000, net metering through BSES and TPDDL, and payback periods of just 4–6 years, rooftop solar is one of the most straightforward financial decisions a Delhi homeowner or business owner can make right now.
Whether your monthly bill is ₹3,000 or ₹30,000, there is a system size that makes financial sense for your property. The key is getting an accurate cost estimate based on your actual consumption, roof conditions, and local tariff — not a generic online number. That’s exactly what Thermosun provides, free of charge, before you commit to anything.
With 1,000+ completed installations, MNRE approval, and a track record that includes government institutions across Delhi, Thermosun Engineering and Power India Pvt. Ltd. is the best solar EPC company in Delhi for homeowners and businesses who want quality, accountability, and results that last 25 years.
☀️ Get Your Free Solar Cost Estimate Today
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Thermosun — Delhi NCR’s most trusted solar EPC company.
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