Rajasthan Solar Guide 2025: Cost, Subsidy, Payback for Homeowners
Considering installing solar in Rajasthan in 2025, but confused about the cost, subsidy, savings, and payback?
You’re not alone.
In this post, we’ll break down each component step by step and explore the financial feasibility of rooftop solar for homeowners in Rajasthan in 2025.
Rajasthan receives one of the highest Peak Sun Hours in the country, with the most clear sunny days in a year. Thus, making it an ideal place for solar for homeowners.
It is also the largest Indian state, which is landlocked.
The state is surrounded by:
- Punjab in North
- Haryana and Uttar Pradesh in North-east
- In the southeast, we have Madhya Pradesh
- We see Gujarat in the south-west of Rajasthan
- In the west, Rajasthan is surrounded by Sind and Punjab in Pakistan.
The other geographical and statistical facts are:
- Location: coordinates 26.57° N and 73.83° East
- Area: 3,42,239 km²
- Population: 8.13 crores as on July 1, 2023
Why Rajasthan is Perfect for Solar in 2025
Rajasthan receives an average of 6 to 7 kWh/m2/day, equivalent to 6 to 7 Peak Sun Hours per day, making it highly favorable for solar roof-top installation in 2025.
Rajasthan records the highest Peak Sun Hours in March, April, and May. Thereafter, it sees a dip due to cloud cover during the Monsoons. Winters witness relatively low sunlight intensity in November, December, and January (December being the lowest).
Region-wise Peak Sun Hours in Rajasthan
Rajasthan has 50 districts, and each has tremendous solar potential that can save you a significant amount of money every month. Let us give a glance at the solar potential (Peak Sun Hours) region-wise of Rajasthan in 2025.
| Region | Typical Districts | Approx. Average PSH (hrs/day) |
|---|---|---|
| Western Rajasthan | Jaisalmer, Barmer, Bikaner, Churu, Jodhpur | ~6.8 (highest solar potential) |
| Northwestern Rajasthan | Sri Ganganagar, Hanumangarh, Nagaur, Anupgarh | ~6.5 |
| Central Rajasthan | Jaipur, Ajmer, Alwar, Sikar, Jhunjhunu, Tonk, Beawar, etc. | ~6.0 |
| Southern Rajasthan | Udaipur, Dungarpur, Banswara, Sirohi, Rajsamand, Pratapgarh | ~5.8 |
“Want to know the exact savings, payback, and ROI in your district?“
Does Rajasthan’s Climate Favor Solar: Pros and Cons
Not all types of solar panels suit the Rajasthan environment. It is the climate of the state that decides the technology and the features of the solar panels. First, let us know about the Rajasthan climate.
Rajasthan is hot because of its desert climate, dry air, and almost clear skies throughout the year. This climate has the following impact:
i) High Solar Irradiance
- Rajasthan has a semi-arid to arid climate type (due to the Thar Desert) with hot temperatures throughout the year.
- It receives an average of 6 to 7kWh/m2/day, or equivalent to 6 to 7 PSH per day, and it is among the highest in India
- The Western districts, including Jaisalmer, Barmer, Jodhpur, Bikaner, and Churu, receive the highest solar irradiance in the state.
The high PSH values in Rajasthan enable solar panels to produce more power than anywhere else in the country.
ii) Long Sunshine
- Rajasthan has 325 to 240 sunny days in a year. This consistent sunshine creates an excellent environment for the solar panels to produce power, without major dips, throughout the year.
iii) High Temperature
- The summer day temperature often crosses 45 °C, especially in May – June
- This makes the solar cell temperature reach 70-75°C. affecting the performance of the solar panels.
Therefore, we need solar panels that can perform well even in high temperatures.
iv) Monsoon Effect
- The monsoon period in Rajasthan is July-August, when we see moderate to sparse cloud cover in the sky.
- The solar irradiance drops to 4.5-5 kWh/m2/day, causing solar panels to generate less than in previous months.
- However, the rainfall washes away the dust over the solar panels and keeps them cool. And this boosts the efficiency of the solar panels, which otherwise was impacted due to the low sunlight intensity.
v) Dust Storms in Rajasthan
- Dust storms are quite common in the state (especially in western Rajasthan), posing a major challenge for solar PV generation.
- Dust accumulated over the solar panel’s surface may reduce its efficiency by 10-20%.
- Therefore, regular cleaning is essential for solar panels to generate consistently.
vi) Cold Winters
- The sunlight intensity reduces due to the shifting away of the relative position of the Earth and the Sun.
- Despite this, the solar panel generation remains quite strong due to clear skies and low temperatures.
Did you Know?
The desert sand becomes very hot during the day. The sand absorbs the heat and also acts like a mirror, reflecting the sunlight. This process heats the air layers above it. and when the sun sets, it cools off very quickly. The desert air lacks humidity, which cannot trap the heat, and it quickly escapes, making cold nights.
Best Solar Panels for Rajasthan in 2025
Friends, you might have guessed better than me after understanding Rajasthan’s climate in the above section.
Let us look at the features and the technology of the solar panel best suited for the Rajasthan climate:
Technology and Features of Solar Panels
i) Low Temperature Coefficient of Power
We all know that with a temperature rise, the solar cells lose power. A solar panel with a better temperature coefficient of power performs more efficiently at high temperatures. Therefore, homeowners in Rajasthan must look for solar panels with a low temperature coefficient of power (generally less than -0.34%/°C).
ii) Wide Operational Temperature Range
During summers in Rajasthan, the ambient day temperature can even cross the 45°C mark. And the solar cells encapsulated in the glass sheet are even performing 25°C-30°C more than the ambient value. That is, the solar cell temperature may reach 70°C-75°C in May-June. A solar panel without a wide operational range cannot perform in such high temperatures. Therefore, solar panels must have a wide temperature operational range of -40°C-85°C.
iii) Latest Technology & highly efficient solar panels
In Rajasthan, the heat losses can be significant in solar panels due to its high temperature. The Mono-PERC half-cut solar cell technology solar panels have lower heat losses and better structural strength. Moreover, they have efficiency up to 22% making them suitable for Rajasthan’s hot climate.
iv) Wind Load Rating of Solar Panels
In Rajasthan, the average wind speed is 12-18 km/h with occasional wind gusts up to 90-100 km/h during the windstorms. A solar panel with at least 2400 Pa wind load rating (tested for ~150 km/h) is sufficient to withstand most solar installations. However, a wind load rating >=3800 Pa is recommended for storm-prone rooftops.
v) Long Warranties Solar Panels
The extreme climate of Rajasthan requires solar panels that are durable and have long warranties. Homeowners should look for solar panels with product warranties of 10-12 years and performance warranties of over 25-27 years.
Energy Produced by Solar in Rajasthan in 2025
The energy produced by the system depends on many factors. Let me highlight a few important ones:
- The quality of the solar panels
- Sunlight intensity in the place where they are installed
- Right facing and the proper tilt of the solar panels with the ground
- Maintenance of the solar panels by the user
- Temperature and the climate of the place
Keeping the above factors in mind, a 1-kW solar power system in Rajasthan produces an average of ~ 5.2 units in a day. (1 unit = 1kWh of energy)
Working: Energy Production by 1kW Solar in Rajasthan
Units Generation = System Size x Average Annual Daily PSH x Production Factor
where,
- System size = 1kW
- Avg. Annual Daily PSH = 6-7 hrs per day or 6.5 (taking average of 6 and 7)
- Production Factor = 0.8 (20% energy is lost due to losses in the system)
Units Generation = 1 kW x 6.5 hours x 0.8 = 5.2 units daily
Or
~ 156 units in a month. This makes ~ 1,872 units in a year.
Cost of 1kW to 10kW Solar in Rajasthan in 2025
The cost of a solar power system depends on many factors such as:
- Quality and the technology of the solar panels and the other components used in the system.
- Type of roof (inclined roof tend to have higher installation charges than the solar panels installed in the flat roof).
- Installation and Transportation cost
- Sunlight intensity. A good sunlight region can cover your energy needs with fewer solar panels than those installed in a poor sunlight region.
Cost Breakdown per kW Solar
Considering the above factors, the 1-kW grid-tied solar price ranges between ₹75,000 – ₹85,000 (without subsidy) in 2025.
| Component | Estimated Cost (₹) | Description |
|---|---|---|
| Solar Panels | ~ ₹35,000 | Monocrystalline panels (largest portion) |
| Inverter | ~ ₹15,000 | String inverter for residential use; micro-inverter may cost more |
| Mounting Structure | ~ ₹10,000 | Rooftop mounting (GI/aluminum) |
| Balance of System (BoS) | ~ ₹10,000 | Cables, junction boxes, MCBs, earthing accessories |
| Installation & Labor | ~ ₹10,000 | Site labor, electrical integration, & Transportation |
| Subtotal (Pre-Subsidy) | ~ ₹80,000 | Adds up components |
| Subsidy (under PM Surya Ghar) | ₹30,000 | Central and possible state incentives |
| Estimated Net Cost | ~ ₹50,000 | After applying subsidy |
Net Cost of 1kW Solar after subsidy in Rajasthan
The centre subsidy of ₹30,000 (under PM Surya Ghar Yojna) on 1kW Solar in Rajasthan drops the effective per kW cost of solar to an average of ~ ₹50,000.
Price of 1kW to 10kW Solar in Rajasthan
| System Size | Avg. Cost Before Subsidy (₹) | Central Subsidy (₹) | Avg. Cost After Subsidy (₹) | Avg. Per Watt Cost |
|---|---|---|---|---|
| 1 kW | ₹80,000 | ₹30,000 | ₹50,000 | ₹50/Watt |
| 2 kW | ₹1,60,000 | ₹60,000 | ₹1,00,000 | ₹50/Watt |
| 3 kW | ₹2,05,000 | ₹78,000 | ₹1,27,000 | ~ ₹42/Watt |
| 4 kW | ₹2,70,000 | ₹78,000 | ₹1,92,000 | ₹40/Watt |
| 5 kW | ₹3,40,000 | ₹78,000 | ₹2,62,000 | ~₹52/Watt |
| 10 kW | ₹5,90,000 | ₹78,000 | ₹5,12,000 | ~₹51/Watt |
Money saved by per kW Solar in Rajasthan (2025)
We have just seen that the energy produced by 1kW Solar in Rajasthan is ~5.2 units per day, making it ~156 units in a month.
For 156 units consumed in Rajasthan, the effective tariff works out to be ~₹7.8 per unit (including fixed charges and duties).
Therefore, the money saved by 1kW solar in Rajasthan is ~₹7.8 per unit x 156 units
~₹1,217 per month or ~₹14,602 in a year.
Working: Energy bill for 156 units consumed in Rajasthan
| Component | Details |
|---|---|
| Energy Charges | |
| ‣ First 50 units | 50 × ₹4.75 = ₹237.50 |
| ‣ Next 100 units | 100 × ₹6.50 = ₹650.00 |
| ‣ Remaining 6 units | 6 × ₹7.35 = ₹44.10 |
| Subtotal (Energy) | ₹931.60 |
| Fixed Charges | Since consumption > 150 units: ₹275 |
| Electricity Duty | Typically ₹0.06/unit: 156 × ₹0.06 = ₹9.36 |
| Estimated Total Bill | ₹1,216.00 approx |
| Average Per Unit Rate | ₹1,216/156 = ~₹7.8 per unit |
Solar Payback & ROI in Rajasthan (2025)
The payback period is the time in which your investment to be recovered.
More sunlight intensity and a higher grid price mean more savings on going solar.
Payback Period (Years) = System Net Price/Annual Savings
Payback Period Working
The annual savings from 1kW solar in Rajasthan is ~₹14,602 and the net-cost after subsidy is ~₹50,000.
Therefore, Payback Period = ₹14,602/₹50,000 ~ 3 years
However, the discounted payback is 4.8 years, which considers the future maintenance cost while calculating the payback.
It is a more realistic method of knowing your investment recovery time.
Solar Electricity per unit cost vs the Grid Price
IRR vs Cost of Capital
Benefits of installing solar in Rajasthan
Solar offers many benefits to its users.
No carbon emissions: Solar electricity is a clean source of energy. The process of absorbing the sunlight and producing current by the solar panels does not release carbon emissions into the air.
A 5-kW solar power system mitigates over 7 tonnes of carbon emission annually.
- Smooth electricity: Solar panels produce a smooth current which improves the useful lives of the electrical appliances.
- Money saving: We have calculated above how much solar panels can save money when installed.
- Increase in the aesthetic value of a home: The sleek solar panels when installed on the roof of the house, add the aesthetic sense to the house and also increase its value.
Is Solar Worth it for Rajasthan Homeowners in 2025?
Yes, Solar is worth it for Rajasthan homeowners, as the state has high sunlight intensity, clear skies, and good government subsidy for residential solar.
Homeowners with solar panels having:
- lower temperature coefficient of power
- High efficiency
- Wide temperature range
- Long Warranties
can expect a discounted payback within 4 to 5 years and an annual IRR (internal rate of return) of over 25%. Thereafter, you enjoy free and smooth electricity for decades.
However, it is important to do the system maintenance periodically. The dust layer accumulated over the solar panels’ surface can impact their performance.
Therefore, regular cleaning helps in maintaining their performance even in extreme weather conditions.
💡 Ready to go solar? Join my Solar Energy Masterclass to size your system correctly and maximize ROI.”
