When you first think about installing solar panels on your roof, the biggest question is simple: How much is this going to cost me in 2026?
The good news: rooftop solar has become far more affordable, and central/state subsidies can cut your final bill by a big margin if you apply correctly. The tricky part: the price depends on your city, roof, system type, and the brands you choose. This guide explains rooftop solar costs in India so you can quickly understand what you’ll roughly pay, how subsidies work, and whether it’s worth it for your home in 2026.
Table of Contents
Rooftop Solar Cost Table (Before & After Subsidy)
In 2026, most residential rooftop systems in India fall into the ranges below:
| System Size | Price Range (Before Subsidy) | Price After Typical Subsidy* | Best For |
| 1 kW | ₹65,000 – ₹90,000 | ₹45,000 – ₹75,000 | Small homes, lights & phone charging |
| 3 kW | ₹1,80,000 – ₹2,70,000 | ₹1,25,000 – ₹2,00,000 | 2–3 BHK apartments, daytime use |
| 5 kW | ₹2,70,000 – ₹4,00,000 | ₹1,90,000 – ₹3,00,000 | 3–4 BHK homes, heavy usage |
| 10 kW | ₹5,00,000 – ₹9,00,000 | ₹3,50,000 – ₹6,50,000 | Large homes, shops, partial backup |
*Actual “after subsidy” cost depends on your exact state scheme and eligibility.
For many Indian homes, systems between 3 kW and 5 kW are the sweet spot for bill reduction.
What’s Inside That Cost?
When an installer quotes something like ₹2,00,000, it helps to know where that money is going.
- Solar panels (around 40–55%)
Panels are the biggest chunk of the price. Good brands typically charge a few tens of rupees per watt for 400–550 W modules. - Inverter and protections (around 15–25%)
The inverter converts DC to AC and may include smart monitoring or hybrid features. - Mounting, wiring and rooftop work (around 10–15%)
Structures, clamps, wiring and labour to safely mount panels on your roof. - Batteries (if you want backup) (often 15–30% extra)
Off‑grid or hybrid systems with batteries cost noticeably more, but give backup during power cuts. - Installation, permits and DISCOM/net‑metering charges (around 5–10%)
Includes labour, safety checks and approvals.
Types of Rooftop Solar Systems and Cost Impact
1. On‑Grid Rooftop Solar (Most Popular and Cheapest per kW)
- Connected to the electricity grid
- No batteries
- You export excess power and get bill adjustment (net‑metering) where available
- Best for: City homes with relatively reliable power
- Cost per kW: at the lower end of the ranges in the table above
2. Off‑Grid Solar (With Batteries)
- Not connected to grid, or only partially
- Uses batteries for backup
- Best for: Villages, farmhouses, remote locations or frequent long power cuts
- Cost per kW: can be 20–30% higher because of battery bank
3. Hybrid Solar (Grid + Battery)
- Connects to grid and has batteries
- Bill savings plus blackout protection
- Cost sits between basic on‑grid and full off‑grid depending on battery size
Real‑World Example: 3 kW Solar System for a Typical Indian Home
Imagine a 2–3 BHK home with a ₹4,000–₹5,000 monthly electricity bill.
Illustrative 3 kW On‑Grid Cost (2026)
| Item | Approx. Cost (₹) |
| Panels (around 3 kW total) | 1,00,000 – 1,15,000 |
| Inverter, wiring, protections | 60,000 – 70,000 |
| Mounting structure & basic roof work | 20,000 |
| Installation, net‑metering and misc. | 15,000 – 20,000 |
| Total before subsidy | 1,95,000 – 2,25,000 |
Subsidies under current rooftop programmes can bring the effective cost down significantly depending on state and capacity limits
How Rooftop Solar Subsidies Reduce Total Cost
India runs a national rooftop programme and offers a unified portal to apply for subsidies.
- National portal: https://solarrooftop.pmsuryaghar.gov.in
- Programme details and guidelines: https://mnre.gov.in/en/grid-connected-solar-rooftop-programme/
Schemes and amounts keep changing, always check these official pages for the latest rates before finalizing a system.
Simple Method to Calculate Your Solar System Size
- Note average monthly consumption (kWh) from the bill.
- Divide by 30 to get daily kWh.
- Divide daily kWh by 4–5 (average peak sun hours in many parts of India).
Example:
- Monthly usage: 300 kWh → daily ≈ 10 kWh
- 10 ÷ 5 ≈ 2 kW
So a 2 kW system can cover a big portion of that usage, assuming good sun conditions.
For precise sizing, use the official solar rooftop calculator
Buyer Checklist: Important Questions to Ask Your Solar Installer
Before you sign any deal, ask your installer these simple but important questions:
- Which solar panel brand and model will you install, and what are its efficiency and warranty details?
- Which solar inverter brand and type (on‑grid or hybrid) will you use, and how many years of warranty does it have?
- Who will take care of DISCOM and net‑metering paperwork for my rooftop solar connection?
- Can this solar system be expanded in future if my electricity usage increases?
- What are the yearly maintenance requirements and costs for this rooftop solar system?
- If the system includes batteries, which battery technology is used and what is the expected life and warranty?
These questions help you compare different rooftop solar quotes and choose a reliable installer for your home in India.
Final Thoughts: Is Rooftop Solar Right for You?
Still confused about rooftop solar? Check your monthly bill, run a quick solar savings estimate, and compare a few installer quotes to see your real costs and payback in 2026.
FAQs
What is the cost of a 1 kW rooftop solar system in 2026?
The cost ranges between ₹55,000 to ₹75,000 before subsidy.
What is the 20% rule for solar panels?
Residential solar panel installations should not generate more than 20% of the property’s annual electricity usage.
How many AC can run on a 3kW solar system?
You can run a 2-ton AC along with essential home appliances using a 3kW solar power system.
Is rooftop solar worth it in India in 2026?
For many households with decent roof space and moderate to high electricity usage, rooftop solar can pay for itself in a few years, especially when subsidies and rising tariffs are considered.
How long do solar panels last?
Modern panels commonly carry performance warranties up to 25 years, with gradual degradation over time.
Can I expand my solar system later?
Often yes, but tell your installer early so they size the inverter and cabling appropriately.