0
Years of Experience
0
+ Successful Projects Delivered
Perfect Sunwin Solar was founded with a clear mission – to reduce pollution and accelerate the adoption of clean, renewable energy across India. What began in 2015 as the vision of two passionate renewable energy professionals has now grown into a trusted name in residential solar solutions.
Over the years, we have empowered more than 25,000 households to embrace solar energy, helping families cut down their electricity bills by up to 90% while contributing to a greener tomorrow.
Our expertise lies in delivering on-grid and hybrid solar systems, designed to meet the unique needs of modern homes. With innovation at the heart of our journey, we are also preparing to introduce off-grid solutions, ensuring energy independence and sustainable living for every household.
At Perfect Sunwin Solar, our commitment goes beyond installations — we strive to offer end-to-end solar solutions that combine quality, efficiency, and reliability. What sets us apart is not just our technical expertise, but also our passion to make solar energy accessible, affordable, and impactful for communities across India.
An off-grid solar system — also known as a stand-alone solar system — works independently of the power grid. It’s designed as a self-sustained “energy island” that can power your home even in remote locations or during blackouts.
An off-grid system consists of the following key components:
Solar panels (modules)
Mounting structures
Batteries
Solar charge controller
Solar inverter
Safety accessories
Free solar consultation to help you understand your options
Premium prefabricated mounting structures engineered to withstand cyclonic wind speeds of up to 170 kmph
Quick 10-minute loan approvals for hassle-free financing
3D rooftop design models created within 15 minutes of the site survey
Flexible EMI schemes, including popular zero-cost options
Comprehensive 5-year AMC contracts for worry-free maintenance
At Sunwin Solar, we’re not just installing panels — we’re building a legacy brand that values customers, community, and the environment.
Solar panels are made of solar cells that capture sunlight and generate direct current (DC) electricity.
Monocrystalline panels → made from a single silicon crystal, offer higher efficiency.
Polycrystalline panels → made from multiple crystals, cost-effective and widely used.
For best performance, Sunwin Solar ensures panels are installed at the correct tilt angle and kept free of shadows.
Since household appliances use alternating current (AC), the solar inverter converts DC power from the panels into usable AC power. Just like in on-grid systems, the inverter is the heart of the solar plant.
Batteries are the backbone of off-grid solar.
During the day, solar energy powers your home and charges the batteries.
At night or on cloudy days, stored energy from the batteries keeps your home running smoothly.
The charge controller regulates the flow of electricity. It ensures batteries don’t overcharge and that the right amount of power is fed into the inverter and storage.
High-quality mounting structures are crucial for the durability and efficiency of a solar plant.
Sunwin Solar uses hot-dipped zinc galvanized structures designed to withstand extreme weather while maintaining optimal tilt for maximum sunlight absorption.
A safe solar system isn’t just about panels and batteries. Essential accessories include:
DC cables and DC combiner box
AC cables and AC combiner box
MC4 connectors
Earthing strips & conduit trays
Lightning arresters
⚡ With Perfect Sunwin Solar, you don’t just get a solar system — you get a complete, reliable, and future-ready energy solution tailored for your home.
The process of an off-grid solar PV system is simple yet highly effective. Here’s how it works:
☀️ Solar Panels Capture Sunlight
Solar panels absorb sunlight and convert it into Direct Current (DC) electricity.
⇩
🔌 Flow to Combiner Box
The DC power is directed into a combiner box, where multiple panel connections are merged safely.
⇩
⚡ Charge Controller Management
From the combiner box, electricity flows to the solar charge controller, which regulates power flow.
⇩
🔋 Battery Charging
The controller directs electricity into batteries, storing energy for use even during nights or cloudy hours.
⇩
🔄 Controller–Inverter Communication
The charge controller communicates with the solar inverter to maintain smooth energy management.
⇩
🔧 Inverter Conversion
The off-grid inverter converts the stored DC electricity into Alternating Current (AC), which is suitable for household use.
⇩
🛡️ Smart Battery Management
Most modern off-grid inverters come with in-built battery management systems for safety and efficiency.
⇩
🏠 Power for Your Home
Finally, the inverter supplies AC power to run all your home appliances reliably.
You know the components, you also know the functioning. So, it’s time that we walk you through the specifics of different types of off grid solar power plants. We’ve tabulated the details below.
| Capacity | Units generated / day | Units generated / year |
| 1 kW off grid solar power system | 4 units on average | 1440 units on average |
| 2 kW off grid solar power system | 8 units on average | 2880 units on average |
| 3 kW off grid solar power system | 12 units on average | 4320 units on average |
| 4 kW off grid solar power system | 16 units on average | 5760 units on average |
| 5 kW off grid solar power system | 20 units on average | 7200 units on average |
| 10 kW off grid solar power system | 40 units on average | 14400 units on average |
An off-grid solar power system may sound complicated, but the process is actually quite simple. Here’s how it works:
Solar Panels capture sunlight and convert it into direct current (DC).
⬇
The DC power moves to a combiner box.
⬇
From the combiner box, the current is directed to a solar charge controller.
⬇
The charge controller supplies power to the batteries and ensures they are charged efficiently.
⬇
It also communicates with the off-grid inverter.
⬇
The inverter converts DC into alternating current (AC).
⬇
Most modern off-grid inverters come with a built-in battery management system.
⬇
Finally, the inverter delivers AC power to run household appliances.
When considering the price of an off-grid solar system, it includes:
Equipment (panels, inverter, batteries, charge controller)
Installation & wiring
After-installation support
👉 On average, the cost of a complete off-grid solar system with batteries in India ranges between ₹85–100 per watt peak.
The variation mainly depends on battery backup capacity:
Short backup (30–60 mins): Smaller batteries, lower cost.
Long backup (6–7 hours): Larger batteries, higher cost.
Simply put, the higher the battery capacity, the higher the cost.
At Perfect Sunwin Solar, we provide end-to-end solutions – from design to installation – ensuring your system meets your exact energy needs.
The return on investment (ROI) for an off-grid solar setup usually takes 6–7 years.
This is longer compared to on-grid systems because batteries are expensive and add significantly to the cost.
Still, in the long run, you save money by avoiding the high cost of grid electricity, especially in remote areas.
Despite higher initial costs, off-grid solar comes with amazing benefits:
Independence from the grid: Best choice where grid supply is unavailable (villages, farms, remote homes).
Eco-friendly power: Clean and green energy with zero pollution.
Cost saving in remote areas: Fossil fuel-based electricity is costly; solar offers a more economical alternative.
An off-grid solar system (standalone system) is the perfect solution for areas without grid electricity.
Yes, the payback period is about 6–7 years, but considering the rising cost of conventional power, investing in an off-grid solar system for your home is a wise long-term decision.
With Perfect Sunwin Solar, you not only get high-quality products but also professional installation and reliable after-service support.
1. What is an off-grid solar system?
It’s a standalone solar system that works independently of the grid. Panels convert sunlight into electricity, charge controllers regulate power, batteries store energy, and inverters supply AC power for appliances.
2. What is the main drawback of an off-grid system?
The cost of batteries is the biggest drawback. A complete setup with batteries costs about ₹85–100 per watt peak, and the system typically breaks even in 6–7 years.
3. How does an off-grid solar system work in simple terms?
Panels absorb sunlight → DC power
Combiner box → Charge controller
Batteries charged + Inverter converts DC to AC
Appliances run on AC power stored/generated by the system
