Solar for Homes | 10kW Rooftop Solar Power by USL
We’re here to support your solar needs. Reach out to us for inquiries, quotes, or assistance in finding the best rooftop solar panel options for homes in India.
Contact usOur Install Solutions for Every Roof
Max Power Mounting with Optimal Height Columns on RC-Roof
For bifacial solar panels, USL team typically install them 1 to 1.5 meters (3.3 to 5 feet) above the ground or roof. A standard baseline height of 42.5 inches (about 1.1 meters). It allows sufficient clearance for reflected light to reach the back of the panels.
Space Saver Mounting with Elevated Height Columns on RC-Roof
Dual Use directly underneath the array while the panels create beneficial shade while generating power for limited space terrace houses.
At 2+ meters, unrestricted convective airflow cools the rear side of the module, resulting in higher overall energy yields in hot climates. Lighter surfaces (white paint on floor concrete, tiles) increase bifacial gains, making the mounting height highly impactful
Sheet/Tile Roof Mount
USL roof mount structure provides better resistance to high winds, extreme temperatures, and mechanical stress while reducing degradation over time.
Bifacial panels rely on surface reflection. A light-colored or bright metallic sheet roof acts as a giant mirror, reflecting ambient and direct sunlight onto the backside of the panels.
Who Should Choose 10kW?
- A 10kW solar system costs ₹5,00,000–₹6,50,000 before subsidy and ₹4,22,000–₹5,72,000 after PM Surya Ghar subsidy of ₹78,000.
- It generates 40–50 units per day — designed for large villas, bungalows, home offices, and small commercial establishments with monthly bills of ₹6,000–₹15,000+.
- Requires ~600 sq ft of roof space and is the largest size commonly installed for residential use.
Space and Installation
- Panels: 18 × 540W~555W panels (or 16 × 600W~625W for reduced count)
- Roof area: ~600 sq ft (shadow-free, includes row spacing)
- Weight: ~400–500 kg total — a structural assessment is recommended for older buildings
- Installation time: 2–3 days
- Electrical: May require a dedicated distribution board and 3-phase connection (check with installer)
- 600 sq ft is available on most villa and bungalow terraces. For smaller roofs, consider splitting across multiple roof faces or using higher-wattage panels to reduce total count.
Subsidy and Payback Period
The ₹78,000 subsidy is a smaller fraction of cost at 10kW (~14%), but the absolute annual savings are substantial:
| Tariff | Net Cost | Annual Savings | Payback |
|---|---|---|---|
| ₹5/unit | ₹4,97,000 | ₹75,000 | ~6.6 years |
| ₹7/unit | ₹4,97,000 | ₹1,05,000 | ~4.7 years |
| ₹10/unit | ₹4,97,000 | ₹1,50,000 | ~3.3 years |
Metro residents in the highest tariff slabs (₹10–₹14/unit for 500+ units) see the fastest returns — often under 3.5 years. Over 25 years, a 10kW system saves ₹20,00,000–₹45,00,000.
10kW Solar System Price Breakdown
| Component | Cost Range |
|---|---|
| Solar panels (18 × 540W~555W) | ₹1,60,000–₹2,10,000 |
| On-grid inverter (10kW) | ₹55,000–₹80,000 |
| Mounting structure | ₹25,000–₹40,000 |
| Wiring, protection, earthing | ₹15,000–₹22,000 |
| Installation labour | ₹15,000–₹22,000 |
| Net metering & DISCOM fees | ₹5,000–₹10,000 |
| GST (8.9%) | ₹50,000–₹65,000 |
| Total (before subsidy) | ₹5,00,000–₹6,50,000 |
| PM Surya Ghar subsidy | −₹78,000 |
| Net cost (after subsidy) | ₹4,22,000–₹5,72,000 |
At 10kW, the per-watt cost drops to ₹50–₹65/W (vs ₹55–₹75/W for smaller systems) due to bulk panel pricing and shared installation labour. The ₹78,000 subsidy covers only 12–15% of Total cost at this size.
Daily and Monthly Output
| Period | Output | Bill Savings (at ₹6–₹10/unit) |
|---|---|---|
| Per day | 40–50 units | ₹240–₹500 |
| Per month | 1,200–1,500 units | ₹7,200–₹15,000 |
| Per year | 14,600–18,250 units | ₹87,600–₹1,82,500 |
At 1,200–1,500 units/month, a 10kW system can eliminate electricity bills entirely for most households. Homes with very high consumption may still have a small residual bill.
What Can a 10kW System Run?
10kW handles the heaviest residential loads without compromise:
| Appliance | Wattage | Hours/day | Daily Units |
|---|---|---|---|
| LED lights (15–20) | 150W | 6 | 0.9 |
| Ceiling fans (6–8) | 420W | 10 | 4.2 |
| Double-door refrigerator | 250W | 8 | 2.0 |
| Inverter AC 1.5T × 2 | 2,400W | 6 | 14.4 |
| Geyser | 3,000W | 0.5 | 1.5 |
| Washing machine + dryer | 1,500W | 1 | 1.5 |
| Home office (PC, monitors, printer) | 400W | 8 | 3.2 |
| TV (65") + sound system | 200W | 4 | 0.8 |
| EV charger (3.3kW Level 2) | 3,300W | 2 | 6.6 |
| Total | 35.1 units |
Even with 2 ACs, EV charging, and full home office — 5–15 units of daily surplus flow to the grid through net metering.More Details
10kW vs 5kW: When to Go Bigger
|
5KW |
10KW |
|
|
Cost after subsidy |
₹1.72L–₹2.42L |
₹4.22L–₹5.72L |
|
Daily output |
20–25 units |
40–50 units |
|
ACs supported |
1 (6–8 hrs) |
2+ (6–8 hrs) |
|
EV charging |
Limited |
Yes, daily |
|
Bill range |
₹3.5K–₹6K |
₹6K–₹15K+ |
|
Roof space |
500 sq ft |
1,000 sq ft |
Go 10kW if: Your bill exceeds ₹6,000/month, you run 2+ ACs, you charge an EV at home, or you have a home-based business. The doubling in output justifies the doubling in cost through higher-slab tariff savings.
More Details" Excellent Work by the team from start to finish. Extremely Happy "
" Excellent Work by the team from start to finish. Extremely Happy "
" Prompt Service & Subsidy Credited. "
" Site Survey to Subsidy, all works done by USL-Team. "
Get Smart, Start Saving Your Electric Bills Today
Ready to embark on your electric power savings? Order now with our USL Sales Team