ARKS INTERNATIONAL was founded with a single mission — to make clean, reliable, and affordable energy accessible to every corner of India. What began as a passionate team of energy engineers has now grown into one of India’s most trusted EPC companies for solar installations across residential, commercial, and industrial segments.
We’ve helped thousands of families and businesses harness the power of the sun — saving up to 90 % on their monthly electricity bills while building a cleaner tomorrow.
Our offerings include on-grid, hybrid, and off-grid solar systems, all designed for long-term performance, durability, and cost efficiency.
Why homeowners choose Ark International:
Free site survey & solar consultation
Premium-quality mounting structures engineered for high wind loads (up to 170 km/h)
Easy financing and fast-track loan approvals
3D rooftop simulation within minutes of survey
Zero-cost EMI options available
Comprehensive 5-year maintenance & AMC plans
ARKS INTERNATIONAL — Powering Tomorrow, Sustainably.
What Is an Off-Grid Solar System?
An off-grid solar system (also known as a standalone solar system) produces and stores electricity independent of the utility grid. The solar panels capture sunlight and generate DC electricity, which is stored in batteries through a charge controller and later converted into usable AC power via an inverter.
This system is ideal for remote areas or locations with frequent power outages where a grid connection is unreliable or unavailable.
Key Components of an Off-Grid Solar System
Solar Panels – Convert sunlight into DC electricity. Available in monocrystalline, polycrystalline, and bifacial variants.
Solar Inverter – Converts stored DC power into AC power to run household appliances.
Batteries – Store the generated power for night or cloudy-day usage.
Charge Controller – Regulates voltage and current to protect batteries and manage charging cycles.
Mounting Structures – Ensure panels are installed at the correct tilt & orientation for maximum exposure.
Solar Accessories – Includes cables, connectors, combiner boxes, fuses, earthing kits, and lightning arresters for safe operation.
How Does an Off-Grid Solar System Work?
Sunlight → Electricity: PV cells in the solar panels absorb sunlight and generate DC electricity.
Charge Regulation: The charge controller manages power flow, ensuring batteries charge safely and efficiently.
Energy Storage: Batteries store excess power during the day for nighttime usage.
Conversion to AC: The inverter converts DC from batteries into AC for your home.
Continuous Power Supply: Even during blackouts, your appliances continue running seamlessly.
Off-Grid Solar System Prices in India (2025 Estimates)
💰 Off-Grid Solar System Prices in India (2025 Estimates)
| System Capacity | Approx. Price (₹) | Ideal For |
|---|---|---|
| 1 kW | ₹ 85 000 – ₹ 1 00 000 | Small homes / shops |
| 2 kW | ₹ 1 70 000 – ₹ 2 00 000 | 2 BHK homes |
| 3 kW | ₹ 2 55 000 – ₹ 3 00 000 | 3 BHK homes |
| 4 kW | ₹ 3 40 000 – ₹ 4 00 000 | Large homes / offices |
| 5 kW | ₹ 4 25 000 – ₹ 5 00 000 | Bungalows / farmhouses |
| 10 kW | ₹ 6 00 000 – ₹ 8 50 000 | Industrial / institutional use |
Prices are indicative and vary by battery type, inverter brand, and installation conditions.
🚫 Government Subsidy on Off-Grid Systems
As of 2025, the Indian government does not provide subsidies under the PM Surya Ghar Muft Bijli Yojana for off-grid systems. Subsidies apply only to on-grid rooftop systems.
Ark International assists clients with subsidy documentation for on-grid projects.
✅ Advantages of Off-Grid Solar Systems
- Complete Energy Independence: No reliance on DISCOM or grid power.
- Rural Accessibility: Perfect for remote areas without a stable grid.
- Clean Energy: Zero emissions and minimal environmental impact.
- Backup Power: Continues to supply electricity even during long blackouts.
⚠️ Disadvantages of Off-Grid Solar Systems
- Higher Upfront Cost: Batteries significantly increase the project cost.
- Maintenance Needed: Batteries require periodic replacement.
- No Subsidy Benefit: Unlike on-grid systems, financial aid is unavailable.
- Longer ROI: Typical payback period is 6–7 years (compared to 3–4 years for on-grid).
⚖️ On-Grid vs Off-Grid Solar — Which Should You Choose?
| Feature | On-Grid System | Off-Grid System |
|---|---|---|
| Connection | Linked to utility grid | Independent from grid |
| Batteries | Optional | Mandatory |
| Maintenance | Low | Moderate / High |
| Government Subsidy | ✅ Available | ❌ Not Available |
| Cost | Lower | Higher |
| Ideal For | Urban areas with stable grid | Rural areas or frequent outages |
💡 If you have a reliable grid connection, an on-grid or hybrid system offers faster ROI and lower maintenance. But for remote sites, off-grid solar is a life-changing solution.
🪫 Battery Requirements (Indicative)
| System Size | Battery Configuration | Recommended Capacity |
|---|---|---|
| 3 kW | 8 – 9 batteries of 100 Ah | 48 V system |
| 5 kW | 10 – 11 batteries of 150 – 200 Ah | 48 V / 96 V system |
| 10 kW | 8 – 10 lithium batteries of 48 V 150 Ah | Scalable system |
📊 ROI and Savings
| System Capacity | Payback Period | Avg. Annual Savings |
|---|---|---|
| 3 kW | 6 – 7 years | ₹ 35 000 – ₹ 40 000 |
| 5 kW | 6 years | ₹ 55 000 – ₹ 60 000 |
| 10 kW | 5 years | ₹ 1 Lakh + |
Figures are indicative and depend on local tariffs and usage.
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