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Solar Solutions
Our Presence
SolarSquare is born out of the passion to de-escalate pollution and escalate the adoption of mass solar. Two like-minded environment pros from IIT Bombay started SolarSquare in 2015 as a two-member pack. Now, we’re the 3rd largest EPC contractor for residential installations in India. We’ve helped 25,000+ homes go solar and have been helping our customers save up to 90% on their monthly electricity bills. We install both on-grid and hybrid solar systems. In the near future, we will start the installation of off-grid solar systems too. Some of the services that have set us apart from other vendors include the following.
We’re on a mission to build a legacy brand that values its customers the most.
An off-grid solar system, also known as a standalone solar system, works on the same principle as an on-grid solar system: the PV cells capture the sunlight and convert it to electricity. However, the major difference is that there’s no grid connection in the case of an off-grid solar power system. Instead, it uses batteries to store the electricity generated by the panels during sunshine hours.
The off-grid solar system price in India is higher than that of an on-grid solar system price. Besides, maintaining off-grid solar systems takes more effort (and money) because batteries are involved and they have to be replaced periodically to keep the system functioning properly.
To give you an idea of the cost, here are some demonstrative rates:
*Please note: SolarSquare does not install off-grid solar systems. The off-grid solar panel prices listed above are standard market estimates.
Ready to explore the workings of an off-grid solar system, all the price details, and whether you need to invest in off-grid solar as an Indian homeowner, especially because the Indian government offers a subsidy for the installation of an on-grid rooftop solar system? Dive in for all the details!
An off-grid solar system is a standalone set-up that produces and stores electricity without any connection to the public utility grid. How? It stores the power it generates in batteries.
It’s a careful set-up of the following components that work in tandem to produce electricity from sunlight:
Most Indian homes do not require off-grid solar systems, as their power consumption needs are met by on-grid rooftop solar systems, which are much cheaper and easier to maintain.
However, you will need an off-grid solar system in the following situations:
However, if you live in an area with a reliable grid connection, the benefits of an on-grid solar system are unbeatable!
Now, let’s break down the entire off-grid solar system component by component so you can understand the role of each individual component in electricity generation.
#1. Solar panels
Solar panels are made up of solar cells.
Off-grid solar panels trap sunlight and convert it into DC electricity. The one thing that should be taken care of at the time of installation is that shadows should not cloud the panels.
#2. Solar inverter
The power from solar panels is in the form of direct current. Home appliances run on AC power. This is where the solar inverter comes into the picture. It converts DC power into AC power. An off-grid solar inverter, just like an on-grid inverter, is the heart of the solar system.
#3. Batteries
Off-grid solar functions on batteries.
#4. Charge controller
The charge controller in an off-grid solar system controls the charge.
#5. Mounting structures
You have the panels and the inverter, but the system cannot be set up without proper mounting structures. The mounting structures should be at a proper tilt angle (near perpendicular to the sun for as long as possible) so that they receive maximum sunlight.
#6. Solar accessories
You know the major components of an off-grid solar system, but there are other accessories without which the system will not be safe. Here are the accessories we’re talking about:
As you can see, it takes a fleet of components to produce electricity from sunlight in a usable form (AC). Here’s a step-by-step breakdown of this process for easy understanding. Have a look!
Step 1: Sunlight Absorption & Electron Excitation Through Solar Panels
Each solar panel is packed with photovoltaic (PV) cells made of semiconductor materials, typically silicon.
When sunlight (photons) hits a PV cell:
Step 2: String Aggregation & Safety Protection Through a Combiner Box
Because most off-grid solar installations use multiple strings of panels, a combiner box serves as the point where each string’s positive and negative outputs meet.
Inside, individual fuses or circuit breakers protect each string:
Step 3: Maximum Power Point Tracking & Charge Regulation Through a Solar Charge Controller
The DC power from the combiner box flows into the solar charge controller that has a twofold job:
Step 4: Battery Bank Charging
Regulated DC current enters the battery bank, which can be made of lead-acid or lithium-ion. Each type has its own voltage profile and charging algorithm:
Step 5: Intelligent Coordination (Controller ↔ Inverter Communication)
Modern off-grid inverters and charge controllers communicate. They share real-time metrics like battery voltage, SoC, load demand, and temperature. Clearly, the inverter knows when it’s safe to draw power and when to throttle back.
If the battery SoC falls below a configured threshold, the controller can signal the inverter to shed non-critical loads or shut down entirely. This protects batteries from deep discharge, which would shorten their lifespan.
In fact, many modern off-grid inverters have built-in charge controllers.
Step 6: DC-to-AC Conversion Through an Off-Grid Inverter
The inverter transforms DC from the batteries into alternating current (AC) that matches household standards.
A high-quality pure sine-wave inverter:
Step 7: Household Power Delivery
Finally, the inverter’s AC output is fed into a dedicated breaker panel or integrated with the home’s main distribution board via an Automatic Transfer Switch (ATS).
The ATS ensures seamless handover between solar-battery power and a backup generator (if installed).
The off-grid solar system price in India varies based on factors such as:
Before we walk you through the prices based on multiple factors, let’s address the matter of subsidy on an off-grid solar system in India in the section below!
To clear the air once and for all, the Indian government does not offer a subsidy on off-grid solar systems under the PM Surya Ghar Muft Bijli Yojana. You need to install an on-grid rooftop solar system to receive the financial assistance the government offers in the form of a subsidy.
That said, let’s check out the off-grid solar system price based on system capacity:
| System Capacity | Off-Grid Solar System Price (Approx.) |
|---|---|
| 1 kW | ₹85,000 - ₹1,00,000 |
| 2 kW | ₹1,70,000 - ₹2,00,000 |
| 3 kW | ₹2,55,000 - ₹3,00,000 |
| 4 kW | ₹3,40,000 - ₹4,00,000 |
| 5 kW | ₹4,25,000 - ₹5,00,000 |
*Please note : SolarSquare does not install off-grid solar systems. The off-grid solar panel prices listed above are standard market estimates.
Here’s a clear breakdown of the benefits of installing off-grid solar power systems in India:
That said, let’s now walk you through the most critical limitation of off-grid solar systems: ROI!
ROI (return on investment) in the case of off-grid solar systems takes more time than an on-grid system of the same capacity. Why? Well, because batteries are expensive.
Here are a few other limitations of installing off-grid solar in India:
This is a major debate, but the choice is simple. If you live in an area with a reliable grid, you should opt for an on-grid solar system because:
To give you an idea of how cost-effective an on-grid system is, here are the estimated prices after you avail of a subsidy:
*Please note: These prices are indicative as of 29th April 2025 for SolarSquare Blue 6ft variant. The actual final on-grid solar system cost depends on your city, DISCOM charges, product variant opted for, panel type, inverter type, mounting structure height, type of after-sales service, savings guarantee, roof height, etc.
Installing an off-grid solar system in India is the best way to light up homes in rural areas with no (or unreliable) power grid. The electricity generated can light up homes without causing pollution.
While the off-grid solar system price in India is higher than that of an on-grid solar system, investing in an off-grid system is worth it when the power grid is not available. In fact, off-grid solar systems are also a great option in industrial setups.
Q. How much does an off-grid solar system cost?
A. The off-grid solar system price in India depends on many factors, such as the type of solar panels and inverters you choose.
If we had to give a ballpark range, here’s what the off-grid solar system price would look like:
*Please note: SolarSquare does not install off-grid solar systems. The off-grid solar panel prices listed above are standard market estimates.
Q. What is the disadvantage of off-grid solar?
A. It takes a lot of time for you to recover the initial investment. The ROI on off-grid solar is usually 6-7 years.
Q. Is there a subsidy for off-grid solar systems?
A. No. The Indian government offers homeowners a subsidy under the PM Surya Ghar Muft Bijli Yojana for installing on-grid rooftop solar systems, not off-grid solar.
Q. How many batteries are required for off-grid solar systems?
A. This is highly subjective and depends upon the size of the off-grid solar system you are installing.
Here’s an estimated number, though:
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