Want to install rooftop solar at your Delhi home but do not know the actual cost? The final price depends on the system size, panel and inverter brands, roof structure, wiring, net-metering work, battery requirement, installation conditions and applicable subsidy.
This guide explains the realistic cost factors, capacity-wise planning ranges, subsidy calculation, extra charges, roof requirements, payback and the questions you should ask before accepting a solar quotation.
Quick Answer
For a Delhi home, a small grid-connected rooftop solar system may cost roughly ₹60,000 to ₹80,000 per kW before subsidy, but the final quotation can be higher or lower depending on equipment, roof access, structure, wiring and civil work.
Under the central PM Surya Ghar structure, eligible residential consumers receive ₹30,000 per kW for the first 2 kW and ₹18,000 for the additional 1 kW, with a maximum central subsidy of ₹78,000 for systems up to 3 kW. The subsidy does not automatically cover batteries, major civil work, roof repairs, long cable runs or every additional service charge.
Use the final vendor quotation and the official Delhi solar calculator—not a generic online price—as the basis for your decision. The official rooftop calculator itself states that its figures are indicative and actual numbers may vary. Open the official rooftop solar calculator.
Typical Rooftop Solar Cost in Delhi
The following are practical planning ranges for a standard residential installation. They are not fixed government rates or guaranteed market prices.
| System size | Typical gross planning range | Central subsidy ceiling | Indicative cost after central subsidy* |
|---|---|---|---|
| 1 kW | ₹60,000–₹80,000 | ₹30,000 | ₹30,000–₹50,000 |
| 2 kW | ₹1,10,000–₹1,45,000 | ₹60,000 | ₹50,000–₹85,000 |
| 3 kW | ₹1,60,000–₹2,00,000 | ₹78,000 | ₹82,000–₹1,22,000 |
| 5 kW | ₹2,60,000–₹3,50,000 | ₹78,000 maximum central support | ₹1,82,000–₹2,72,000 |
| 10 kW | ₹5,00,000–₹6,50,000 | ₹78,000 maximum central support | ₹4,22,000–₹5,72,000 |
*These are planning ranges, not official tariffs or quotations. They exclude or may vary for batteries, roof repairs, extra structure, long cable runs, load enhancement, taxes, special civil work and other non-standard requirements. Confirm every item in writing.
What Is Included in a Standard Solar Quotation?
A proper turnkey quotation should show each component separately instead of giving only one attractive final number.
- Solar panels and their make, model and wattage.
- On-grid or hybrid inverter.
- Mounting structure and foundation work.
- DC and AC cables.
- AC/DC protection equipment.
- Earthing and surge or lightning protection, where required.
- Monitoring device or mobile-app access.
- Installation labour.
- Roof access and basic installation work.
- Net-metering assistance, if included.
- Testing and commissioning support.
- Warranty documents.
If a quotation does not show panel, inverter, structure, wiring, protection and warranty details, ask for a revised itemised quotation.
What Can Increase the Installation Cost?
Two houses with the same 3 kW system can receive different quotations because the roof and electrical conditions are different.
- High or difficult roof access.
- Long distance between the roof, inverter and electricity meter.
- Additional mounting height or a raised structure.
- Waterproofing or roof-repair work.
- Weak roof or the need for a structural assessment.
- Shade from nearby buildings, trees or water tanks.
- Electrical-panel replacement or load enhancement.
- Long cable routes and trenching.
- Extra earthing, lightning or surge-protection work.
- Battery backup or hybrid inverter.
- Premium panels or inverter brand.
- RWA, building or common-area permissions.
- Special civil work around a shared roof.
How Much Does a 1 kW Solar System Cost in Delhi?
A 1 kW rooftop system is suitable for a small electricity load or as a starting point where roof area and budget are limited. A standard planning range can be around ₹60,000 to ₹80,000 before central subsidy.
After the maximum applicable central subsidy of ₹30,000, the basic balance may be around ₹30,000 to ₹50,000. Your actual payment can be higher if the quotation includes battery backup, civil work, extra structure, load-related work or other non-subsidised items.
Do not select 1 kW only because it has a lower upfront price. Compare it with your annual consumption, roof area and expected savings.
How Much Does a 2 kW Solar System Cost in Delhi?
A 2 kW system may suit a small or medium home with moderate electricity use. A practical planning range can be around ₹1.10 lakh to ₹1.45 lakh before central subsidy.
After the maximum central subsidy of ₹60,000, the basic balance may be around ₹50,000 to ₹85,000, before non-standard work and optional equipment.
Ask the vendor to show the expected generation, roof area, inverter rating and whether the system is on-grid or hybrid.
How Much Does a 3 kW Solar System Cost in Delhi?
A 3 kW system is often considered by Delhi homeowners because it can match moderate household consumption and qualifies for the maximum central residential subsidy under the published PM Surya Ghar structure.
A practical planning range can be around ₹1.60 lakh to ₹2.00 lakh before subsidy. After the maximum central subsidy of ₹78,000, the basic balance may be approximately ₹82,000 to ₹1.22 lakh.
These figures are not a promise of the final price. A 3 kW quote can rise because of a raised structure, waterproofing, battery, premium equipment, long wiring, meter work or other site-specific needs.
How Much Does a 5 kW or 10 kW System Cost?
Systems larger than 3 kW may be useful for larger homes, offices, clinics, shops or homes with high electricity consumption. The central subsidy ceiling does not keep increasing at the same rate after 3 kW under the cited structure.
A 5 kW system may cost roughly ₹2.60 lakh to ₹3.50 lakh before subsidy, while a 10 kW system may cost approximately ₹5 lakh to ₹6.50 lakh. These ranges vary significantly with panel brand, inverter configuration, structure, roof conditions and commercial requirements.
Do not calculate a 5 kW or 10 kW quote by simply multiplying a 1 kW residential price. Larger systems may require different protection, structure, cable design, approvals and installation planning.
Central and Delhi Subsidy: What Is Actually Deducted?
The central PM Surya Ghar subsidy is generally calculated as:
- 1 kW: ₹30,000.
- 2 kW: ₹60,000.
- 3 kW or more: maximum central support of ₹78,000 under the cited structure.
Delhi may provide additional support or generation-based benefits under its current solar programme. The exact support depends on the active policy, system, consumer, electricity connection and applicable process. Do not add a reported Delhi benefit to the central subsidy unless the official Delhi portal confirms that you qualify.
For the wider eligibility and subsidy explanation, read Delhi Solar Subsidy for Residential Homes.
How to Estimate Your Net Solar Cost
Use this planning formula:
Estimated net cost = gross installation cost − applicable subsidy + non-subsidised work and optional equipment.
For example, if a standard 3 kW quotation is ₹1,75,000 and you qualify for ₹78,000 central subsidy:
₹1,75,000 − ₹78,000 = ₹97,000 before extra non-subsidised items.
If you add a battery, roof repair, long cable, raised structure or panel upgrade, those items can increase the final payment.
This is only an estimate. The approved subsidy amount and final vendor quotation are the figures that matter.
On-Grid, Hybrid or Off-Grid: Which Changes the Cost?
On-grid solar
An on-grid system works with the electricity network and normally uses net metering. It is usually the simpler and lower-cost option for homes that do not need backup during power cuts.
Hybrid solar
A hybrid system can combine solar, grid electricity and battery backup. It costs more because of the battery and hybrid inverter, but it may be useful when backup power is important.
Off-grid solar
An off-grid system uses batteries and does not depend on the grid in the same way. It may require more battery capacity and is not automatically the same as a subsidy-eligible grid-connected rooftop system.
Ask the vendor whether the quoted subsidy applies to the exact system type being offered.
How Much Roof Area Do You Need?
The exact area depends on panel wattage, layout, shade, walking space, structure and maintenance access. As a rough planning approach, a 3 kW system may need several hundred square feet of usable shadow-free roof area.
Do not calculate only the panel footprint. The installer should also consider:
- Maintenance access.
- Water tanks and stair rooms.
- Parapet walls.
- Shade at different times of the day.
- Drainage and waterproofing.
- Wind and structure safety.
- Future roof use.
What Should You Check in a Solar Quotation?
- Is the system on-grid, hybrid or off-grid?
- What is the exact panel make, model and wattage?
- What is the inverter make, model and warranty?
- Is the structure included in the quoted price?
- Are earthing, protection and cables included?
- Is net-metering assistance included?
- Are taxes, transport and civil work included?
- Is battery backup included or optional?
- Who handles portal applications and corrections?
- What happens if subsidy approval is delayed or rejected?
- What is the installation timeline?
- What is the AMC and cleaning cost after installation?
Never compare solar quotes only by the final total price. Compare the equipment, scope of work, warranty, service response and subsidy assumptions.
Documents and Application Costs
Before applying, keep your latest paid electricity bill, consumer number, identity proof, roof-rights or occupancy documents, owner/RWA NOC where required and bank information ready.
Read the complete checklist here: Documents Required for Solar Subsidy in Delhi.
Do not assume that every portal fee, meter charge, civil charge or vendor service charge is included in the subsidy. Ask for a written breakup.
How to Apply for the Subsidy Before Installation
Start by checking your residential electricity connection and the correct application route. Register through the official portal, submit your consumer information, wait for the applicable feasibility step, select an eligible vendor and follow the installation and net-metering process.
Read our step-by-step guide: How to Apply for Solar Subsidy in Delhi Online.
Do not install first and assume that subsidy will automatically be approved afterwards. Follow the sequence shown by the official portal and electricity authority.
How Long Does It Take to Install Rooftop Solar?
A straightforward installation may be completed quickly after approval and material availability, but the complete project can take longer because of feasibility, vendor scheduling, net-metering, inspection and commissioning.
Possible causes of delay include:
- Incomplete documents.
- Roof-rights or RWA approval.
- Feasibility review.
- Material availability.
- Additional civil or electrical work.
- Net-meter inspection and installation.
- Commissioning or subsidy documentation.
After applying, you can track progress through the appropriate portal. See our guide on Delhi Solar Portal Application Status Check.
Solar Payback in Delhi
Payback depends on the net amount paid, electricity tariff, actual generation, household consumption, subsidy, maintenance and policy benefits. A simple estimate is:
Payback period = net investment ÷ estimated annual savings.
Do not accept a very short payback promise without seeing the assumptions. Ask whether the calculation includes subsidy, fixed electricity charges, degradation, cleaning, inverter replacement and actual self-consumption.
Important Questions to Ask a Delhi Solar Installer
- Will you conduct a roof and shade survey before finalising the capacity?
- Is your quotation for an on-grid, hybrid or off-grid system?
- Which subsidy route applies to my electricity connection?
- Who submits and tracks the portal application?
- What happens if feasibility or subsidy approval is delayed?
- Who pays for extra civil, wiring or meter work?
- What generation estimate are you using and why?
- What is the panel and inverter warranty?
- Is after-sales service available in my Delhi locality?
- What is the written cancellation and refund policy?
Frequently Asked Questions
What is the rooftop solar installation cost for a home in Delhi?
A standard residential system may cost approximately ₹60,000–₹80,000 per kW before subsidy, but the final amount depends on equipment, roof work, wiring, structure and installation conditions.
How much does a 3 kW solar system cost in Delhi after subsidy?
A practical planning range may be approximately ₹82,000–₹1.22 lakh after a maximum central subsidy of ₹78,000, based on a gross planning range of ₹1.60–₹2.00 lakh. Your actual quotation may differ.
What is the subsidy for a 2 kW solar system?
Under the central PM Surya Ghar structure, the maximum central subsidy for an eligible 2 kW residential system is ₹60,000.
Does the subsidy cover solar batteries?
Do not assume that a battery is included in the central rooftop-solar subsidy. Ask the vendor for a separate battery, hybrid-inverter and backup quotation.
Can I get a free rooftop solar system in Delhi?
Some Delhi programme models may provide additional support for eligible households, but “free solar” is not a universal guarantee. Confirm your current eligibility, consumer contribution and written scheme terms on the official portal.
Is net metering included in the installation price?
It depends on the vendor quotation. Ask whether application support, meter-related charges, inspection assistance and correction work are included or billed separately.
How much electricity does a 3 kW system generate?
Generation varies with sunlight, shade, orientation, dust, temperature, panel type, inverter performance and system downtime. Use the official calculator or a site-specific generation estimate rather than relying on a fixed promise.
How much roof space is needed for rooftop solar?
The required space depends on panel wattage and layout. The installer should assess shadow, maintenance access, tanks, parapets, drainage and structure—not only the panel footprint.
Final Cost Checklist
- Confirm your average monthly electricity use.
- Check roof rights and usable shadow-free area.
- Identify your electricity distributor.
- Check current central and Delhi support.
- Get at least two itemised quotations.
- Compare panel, inverter and structure specifications.
- Ask about wiring, earthing, protection and civil work.
- Confirm net-metering assistance.
- Separate battery and backup costs.
- Get warranty, AMC and payment terms in writing.
- Keep portal acknowledgements and installation records.
- Track the application and subsidy through official portals.
Conclusion
The rooftop solar installation cost for a home in Delhi depends on more than the number of panels. System capacity, roof condition, structure, inverter, wiring, net metering, battery, civil work and subsidy eligibility all affect the final amount.
For most homeowners, the right process is to calculate the required capacity first, compare itemised quotations, verify the official subsidy route and then choose a vendor—not to select the cheapest headline price.
Official Sources
- MNRE Rooftop Solar Calculator
- PM Surya Ghar National Portal
- Delhi Solar Portal
- MNRE Grid-Connected Rooftop Solar Programme
- Delhi Solar Energy Policy
Disclaimer: The prices in this article are planning ranges, not official tariffs or quotations. Subsidy rules, electricity procedures, vendor prices, equipment costs and state benefits may change. Verify the current position through the official portal, your DISCOM and a qualified solar installer before paying or installing.
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