Are your monthly electricity bills consistently above ₹10,000-₹18,000? Do you run multiple ACs, a home office, EV chargers, and heavy appliances — yet feel trapped by ever-rising power tariffs? You’re not alone. Hundreds of West Bengal villa owners, large families, and home-business operators are discovering that a 10kW solar system can slash their power bills by up to 90% — and here’s the game-changer: the government’s PM Surya Ghar Yojana still covers ₹78,000 of the installation cost through direct subsidy, even at this large capacity.
If you’ve been told solar is “only for small homes,” the math has changed dramatically. A 10kW system that cost ₹6,50,000 five years ago now costs just ₹4,42,000 after the government subsidy — making it viable for large homes, bungalows, and villas across Kolkata, Siliguri, Darjeeling, and every district in West Bengal.
In this guide, we’ll break down exactly what a 10kW solar system costs, how much you’ll save, what the PM Surya Ghar subsidy covers, and why large homeowners are choosing 10kW in 2026.
What You’ll Learn in This Article:
✔ Exact 10kW solar system pricing in West Bengal (MRP vs. after subsidy)
✔ How the ₹78,000 PM Surya Ghar subsidy works and eligibility requirements
✔ Real annual savings: ₹1,17,000-₹1,35,000 per year for homes using 900-1,100 units/month
✔ Complete cost breakdown: panels, inverter, wiring, installation labor
✔ Step-by-step comparison with grid electricity over 25 years
✔ EMI/financing options to eliminate upfront payment burden
✔ System specifications: why Tata Power solar panels matter
✔ Warranty coverage: 5-year comprehensive + 8-year inverter warranty
✔ How net metering maximizes your returns
✔ Regional variations across West Bengal cities
✔ Three-phase system requirements and benefits
✔ How the ₹78,000 PM Surya Ghar subsidy works and eligibility requirements
✔ Real annual savings: ₹1,17,000-₹1,35,000 per year for homes using 900-1,100 units/month
✔ Complete cost breakdown: panels, inverter, wiring, installation labor
✔ Step-by-step comparison with grid electricity over 25 years
✔ EMI/financing options to eliminate upfront payment burden
✔ System specifications: why Tata Power solar panels matter
✔ Warranty coverage: 5-year comprehensive + 8-year inverter warranty
✔ How net metering maximizes your returns
✔ Regional variations across West Bengal cities
✔ Three-phase system requirements and benefits
🎯 FREE: Your Personalized 10kW Solar Savings Report
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→ Click Here to Get Your FREE Personalized Report ← Takes only 60 seconds. No credit card needed.
Why Go Solar Now? (The 6 Reasons)
Reason 1: PM Surya Ghar Yojana is Running at Full Capacity
The government’s flagship residential solar scheme is actively approving applications across West Bengal with ₹78,000 direct subsidy for 10kW systems. This isn’t a pilot program — it’s fully functional, approved, and backed by the Ministry of New & Renewable Energy (MNRE). More than 8 lakh homes have already benefited nationally, with West Bengal being a major focus state.
What changed: Applications approved in 2025-26 are now receiving subsidy disbursements. The window remains open, but scheme capacity could tighten as popularity increases.
Important note for 10kW buyers: The PM Surya Ghar subsidy caps at ₹78,000 for all systems 3kW and above. So a 10kW system receives the same ₹78,000 as a 3kW or 5kW system — but the dramatically higher generation capacity means your payback period is still excellent at 3.5-4.5 years.
Reason 2: Your Electricity Bills Are Rising 8-12% Annually
West Bengal’s power tariffs increase by approximately 8-12% every year according to WBERC (West Bengal Electricity Regulatory Commission) notifications. A ₹12,000 monthly bill in 2026 will become ₹15,600 by 2030, then ₹20,300 by 2035 — unless you go solar. A 10kW system locks in your energy costs for 25+ years at zero fuel escalation.
The math: Delaying solar by just 2 years means paying ₹25,000-₹35,000 more in cumulative power charges.
Reason 3: Net Metering Policies are Fully Operational
West Bengal’s net metering framework (under WBSEDCL guidelines) is mature and transparent. Excess solar power fed to the grid generates credits usable during night hours at 1:1 exchange rate. This means a 10kW system doesn’t just cover daytime consumption — it also handles evening loads through stored credits.
Real impact: Homeowners with net metering typically achieve 90-95% offset of total monthly electricity bills.
Reason 4: Panel Technology is 25+ Years Warrantied Now
Modern Tata Power solar panels come with 25-year performance warranties guaranteeing 80% output at year 25. These aren’t experimental panels — they’re deployed on thousands of homes across India. Your investment is protected across two-and-a-half decades.
Added security: SolarLogix provides 5-year comprehensive system warranty + 8-year inverter warranty, covering workmanship, defects, and hardware replacement at zero cost.
Reason 5: EMI Options Make It More Affordable Than Monthly Bills
Rather than paying ₹12,000/month in electricity, you can pay ₹8,500-₹10,000/month in EMI for the same duration — plus after EMI ends, your power is free. Multiple banks offer solar-specific financing at 8-10% interest, with some subsidy-linked schemes offering even lower rates.
The flip: After 7-8 years (EMI completion), you’re saving ₹10,000-₹15,000 monthly forever.
Reason 6: Installation Quality Standards Are Now Certified
Solar installations in West Bengal follow NISE (National Institute of Solar Energy) guidelines, IEC standards, and state DISCOM compliance protocols. Companies like SolarLogix undergo third-party certifications. Cheap installations from unqualified installers often fail within 5 years; certified systems operate trouble-free for 25 years.
Your protection: Working with authorized channel partners (like SolarLogix for Tata Power) guarantees compliance, safety certifications, and warranty support.
Interested in 3kW Solar System: 3 kW Solar System Tata Power
5.1 What Exactly is a 10kW Solar System?
A 10kW (10,000-Watt) solar system is a grid-connected residential solar power plant that:
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Generates between 13,000-15,000 units of electricity annually in West Bengal’s sunlight conditions
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Covers 85-95% of monthly bills for homes consuming 900-1,100 units/month
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Occupies approximately 600-800 square feet of roof space
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Comprises 18-24 high-efficiency solar panels (typically 400-545W each)
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Includes 1 grid-tied inverter (10kVA three-phase capacity)
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Requires basic electrical wiring and WBSEDCL approval
Why 10kW is ideal: It’s the “power user’s dream” for West Bengal homes using 900-1,100 units monthly — large enough to power multiple ACs, EV chargers, home offices, swimming pool pumps, and heavy appliances simultaneously, while still fitting on standard villa/bungalow rooftops.
Three-Phase System Only: At 10kW capacity, a three-phase inverter is mandatory. Single-phase connections cannot handle 10kW loads. If your home currently has a single-phase connection, WBSEDCL upgrade to three-phase is required (SolarLogix assists with this process).
Interested in 5kW Solar System: 5 kW Solar System Tata Power
5.2 Cost Breakdown: Where Your Money Goes
Three-Phase MRP (Before Subsidy): ₹5,20,000 + GST = ₹6,13,600
Table
EMI Alternative (Interest-Bearing):
Table
| EMI Option | Duration | Monthly Payment | Total Interest Cost |
|---|---|---|---|
| Zero-down EMI | 84 months (7 years) | ₹8,500-₹9,500 | ₹42,000-₹55,000 |
| 20% Down + EMI | 60 months (5 years) | ₹9,200-₹10,200 | ₹28,000-₹38,000 |
| 50% Down + EMI | 48 months (4 years) | ₹10,500-₹11,500 | ₹14,000-₹20,000 |
EMI rates subject to bank approval; based on 9% annual interest. Subsidy can be adjusted toward down payment.
5.3 Annual Generation & Savings: Real Numbers for West Bengal
Scenario A: Home in Kolkata (Large Villa, Moderate Shading)
Annual System Performance:
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Total Generation: 13,500 units/year
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Monthly Average: 1,125 units/month
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Typical Bill Without Solar: ₹12,000-₹15,000/month
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Offset by Solar: ~90% (10,125 units, rest from grid)
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Remaining Grid Consumption: 100 units/month = ₹1,000-₹1,200/month
Annual Savings:
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Saved from solar generation: ₹1,35,000-₹1,57,500/year
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Less: 1% annual maintenance cost: -₹4,420-₹5,880
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Net Annual Savings: ₹1,29,000-₹1,52,000/year
25-Year Financial Impact:
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Total generation (25 years): 337,500 units
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Total savings (at 8% tariff escalation): ₹42,00,000
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Less total maintenance (₹800/year): -₹20,000
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Net 25-year benefit: ₹41,80,000
Scenario B: Home in Siliguri (High Solar Potential, Large Bungalow)
Annual System Performance:
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Total Generation: 14,200 units/year
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Monthly Average: 1,183 units/month
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Typical Bill Without Solar: ₹13,000-₹16,000/month
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Offset by Solar: ~92% (10,650 units, rest from grid)
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Remaining Grid Consumption: 80 units/month = ₹800-₹1,000/month
Annual Savings:
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Saved from solar generation: ₹1,42,000-₹1,68,000/year
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Less: 1% annual maintenance cost: -₹4,640-₹6,160
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Net Annual Savings: ₹1,36,000-₹1,62,000/year
25-Year Financial Impact:
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Total generation (25 years): 355,000 units
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Total savings (at 8% tariff escalation): ₹44,50,000
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Less total maintenance: -₹22,000
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Net 25-year benefit: ₹44,28,000
Key Insight: A 10kW system in West Bengal with average roof conditions generates ₹1,29,000-₹1,62,000 in pure annual savings — nearly 30% of the installation cost recovered every single year.
5.4 How the PM Surya Ghar Subsidy Works for 10kW Systems
Subsidy Amount: ₹78,000 (capped — same for 3kW, 5kW, 10kW, and above)
Subsidy Structure:
Subsidy Structure:
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First 2 kW: ₹30,000 per kW = ₹60,000
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Third kW: ₹18,000
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kW 4 and above: ₹0 additional subsidy
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Total for 10kW: ₹78,000 (same as 3kW or 5kW)
Eligibility Criteria:
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Own a residential property in India (any state)
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No pre-existing rooftop/ground-mounted solar
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Property owner (not renter)
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Annual household income: No upper limit (any income eligible)
Application Process:
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Register on PMSY portal (pmsuryaghar.gov.in)
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Fill out application with property details, DISCOM account number
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Get sanction letter from MNRE/State nodal agency (takes 30-45 days)
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Install system through authorized channel partner (SolarLogix)
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Receive subsidy disbursement into registered bank account (30 days post-inspection)
Timeline: Total process takes 120-150 days from application to subsidy in hand.
Subsidy Disbursement Formula:
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₹50,000 at system inspection & approval
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₹28,000 at final commissioning & DISCOM approval
Note: Subsidy amounts may vary slightly based on state government top-ups. West Bengal’s state nodal agency is the Bureau of Energy Efficiency (BEE).
5.5 System Components & Specifications
Solar Panels: Tata Power 400W-545W Mono-PERC / Bifacial
Table
| Specification | Details |
|---|---|
| Brand | Tata Power Solar (India’s most reliable) |
| Capacity per Panel | 400W-545W (variants available) |
| Efficiency | 20.5-22.5% (industry-leading) |
| Technology | Mono-PERC / Bifacial (Passivated Emitter, Rear Contact) |
| Temperature Coefficient | -0.38%/°C (better in hot climates) |
| Warranty | 25 years (80% output guaranteed at year 25) |
| Voltage (Vmp) | 38-42V |
| Current (Imp) | 10.2-13.0A |
| Frame Material | Anodized aluminum (rust-resistant) |
Why Tata Power? Manufactured in India by India’s energy giant, used in 50+ MW of SolarLogix installations, proven in West Bengal’s humid climate for 8+ years. Zero quality complaints, highest remittance rates among channel partners.
Panel Count for 10kW:
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400W panels: 25 panels (10kW total)
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545W panels: 19 panels (10.35kW total)
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375W panels: 27 panels (10.125kW total)
Inverter: Grid-Tied (10kVA Three-Phase)
Table
| Specification | Details |
|---|---|
| Type | Grid-tied inverter (three-phase mandatory) |
| Capacity | 10kVA |
| Efficiency | 97-98% |
| Input Voltage Range | 300-480V AC (3-phase) |
| Output Harmonics | <3% THD |
| Warranty | 8 years |
| Features | Wi-Fi monitoring, app-based real-time tracking |
| WBSEDCL Compatible | Yes |
Top Brands: Sunsynk, SMA, Growatt, or ABB (pre-approved by SolarLogix).
Wiring & Safety Equipment
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DC Cables: 4-6mm² solar-grade PV cable (flame-resistant)
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AC Cables: 6-10mm² three-core wires with RYB color-coding
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Breakers & Disconnects: DC isolator (63A) + AC isolator (80A)
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Surge Protection: Type 2 & Type 3 SPD for grid protection
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Earthing: 16mm² copper rod with clamp, proper grounding per IS:3043
5.6 Performance in Different West Bengal Climates
Kolkata (Coastal, High Humidity)
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Annual Irradiance: 4.2-4.5 kWh/m²/day
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Expected Generation: 13,000-13,800 units/year
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Seasonal Variation: Monsoon (June-Sept) sees 20-25% lower output
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Dust/Cleaning Needs: Moderate (quarterly cleaning recommended)
Siliguri & Northern Districts (Higher Elevation, Clearer Skies)
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Annual Irradiance: 4.6-4.9 kWh/m²/day
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Expected Generation: 13,800-14,500 units/year
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Seasonal Variation: More consistent throughout year
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Dust/Cleaning Needs: Low (bi-annual cleaning adequate)
Darjeeling (Hilly, Cloud-Prone)
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Annual Irradiance: 3.8-4.2 kWh/m²/day
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Expected Generation: 12,500-13,200 units/year (lower due to clouds)
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Seasonal Variation: High during Oct-May, low during monsoon
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Roof Orientation: South/Southwest facing mandatory for optimal output
5.7 Roof Type Compatibility
Concrete/RCC Roofs (Most Common in West Bengal Villas)
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✅ Best for solar installation
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Mounting structure bolts directly into concrete
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No waterproofing issues if properly installed
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Load-bearing capacity: easily handles 15-18 kg/m² system weight
Tiled Roofs (Common in Kolkata heritage homes)
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✅ Compatible but requires extra care
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Roof tiles must be intact; replace damaged tiles first
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L-foot mounting structure used instead of direct bolting
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Slightly higher installation cost (+₹5,000-₹8,000)
Sloped Metallic Roofs
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✅ Compatible
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Direct bolting on metal requires special fasteners
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Ensure proper watersealing to prevent leaks
Asbestos or Corrugated Iron Sheets
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⚠️ Not recommended
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Risk of structural damage from drilling
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Poor mounting durability
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Better alternative: ground-mounted system (if space available)
5.8 Warranty & After-Sales Support
SolarLogix’s Warranty Coverage (Industry-Leading)
Table
| Component | Warranty Period | Coverage | Escalation |
|---|---|---|---|
| Solar Panels | 25 years | Manufacturer defect, degradation <0.5%/year | Escalated to Tata Power |
| Inverter/Controller | 8 years | All defects, component replacement | Service center repair/replacement |
| Installation & Wiring | 5 years (comprehensive) | Workmanship, electrical faults, panel failure | SolarLogix on-site service |
| Mounting Structure | 10 years | Rust/corrosion, structural damage | Replacement or repair |
Real Support Examples:
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Panel degradation: Customer gets free panel replacement if output drops >3% within 5 years
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Inverter failure: SolarLogix provides swap-out inverter while yours is serviced
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Electrical faults: Free troubleshooting, wiring repair/replacement covered under 5-year warranty
24/7 Customer Support
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Phone: +91 833 788 7888
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Average Response Time: 2-4 hours
6. Frequently Asked Questions (25 FAQs)
Subsidy & Government Scheme
Q1: Is the PM Surya Ghar Yojana still open for applications? A: Yes, as of June 2026, the scheme is fully operational across West Bengal. Applications are being processed with ₹78,000 subsidy disbursed within 60-90 days of system commissioning. However, individual state allocations do have caps, so applying early is recommended.
Q2: What’s the maximum income limit for the subsidy? A: There’s NO income limit. Unlike some government schemes, PM Surya Ghar is open to all residential property owners, regardless of annual income. Even high-income households qualify.
Q3: I’m a renter. Can I still get the subsidy? A: Unfortunately, no. The scheme requires you to be the property owner. Renters must seek written permission from property owners (landlords), and the subsidy would be credited to the owner’s account—which complicates the process. Best to discuss with landlord.
Q4: Can I apply if I already have a small solar system? A: No. PM Surya Ghar is only for homes with zero existing solar installations. If you have even a 500W system, you’re ineligible for the subsidy. However, you can upgrade/expand under different schemes.
Q5: How long does it take to receive the subsidy after installation? A: Typical timeline:
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Application to sanction: 30-45 days
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Installation: 7-10 days
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DISCOM net metering approval: 15-20 days
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Subsidy disbursement: 30-60 days post-commissioning
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Total: 90-150 days
Q6: Why does a 10kW system get only ₹78,000 subsidy — the same as 3kW? A: The PM Surya Ghar subsidy is capped at ₹78,000 for all systems 3kW and above. The scheme is designed to make solar affordable for average households, not to fully subsidize large systems. The first 2 kW get ₹30,000/kW, the 3rd kW gets ₹18,000, and kW 4+ get zero additional subsidy. Despite this, a 10kW system still delivers exceptional ROI because of massive generation and savings.
Costs & Financing
Q7: Why is the 10kW price ₹5,20,000 MRP? I’ve seen quotes at ₹4,50,000 elsewhere. A: Price variation depends on:
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Panel quality: Tata Power (₹16,000-₹22,000/panel) vs. lower-grade Chinese panels (₹10,000-₹14,000/panel)
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Inverter brand: Premium three-phase brands (₹1,10,000-₹1,40,000) vs. budget brands (₹80,000-₹1,00,000)
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Installation quality: Full compliance + NISE certifications vs. basic DIY-style
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Post-sales support: 5-year comprehensive warranty vs. 1-2 year limited warranty
SolarLogix’s ₹5,20,000 includes premium components + lifetime support. Cheaper quotes often compromise on one or more quality factors.
Q8: Is EMI better than paying full amount upfront? A: It depends:
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Cash payment: Best if you have liquid funds. Saves interest (₹42,000-₹55,000 over 7 years).
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EMI: Better if cash is tight. ₹8,500-₹9,500/month is often lower than your current ₹12,000-₹15,000 electricity bill.
Math: ₹9,000/month EMI vs. ₹13,000 electricity bill = you’re saving ₹4,000/month while paying EMI. After 7 years, power is free forever.
Q9: What’s the interest rate on solar EMIs? A: Banks typically offer solar EMIs at 8-10% annual interest. Some schemes linked to PM Surya Ghar subsidy offer 6-7% rates. Always compare:
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HDFC Bank Solar Loan: 9.99%
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Axis Bank Solar Financing: 8.5-9.5%
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SBI Solar Loan: 9.5-10.5%
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NBFC options: 10-12%
Ask SolarLogix for bank tie-ups offering discounted rates.
Q10: Can I get 100% financing with zero down payment? A: Yes, some banks offer this, but with caveats:
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You pay interest on the full amount (not subsidy-reduced amount)
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Total interest cost: ₹42,000-₹55,000 over 7 years
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Monthly EMI: ₹8,500-₹9,500
Better option: Pay subsidy amount (₹78,000) from own funds after system is commissioned, then take EMI on the remaining ₹3,64,000 (much lower interest cost).
Performance & Savings
Q11: Will my system generate the same amount every month? A: No. Generation varies seasonally:
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October-March: 1,100-1,300 units/month (clear skies, optimal angle)
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April-May: 1,200-1,400 units/month (summer, hotter, slightly lower efficiency)
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June-September: 900-1,100 units/month (monsoon, clouds, rain)
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Average: 13,000-15,000 units/year
Your bill will also vary: low in summer/monsoon (due to lower consumption), high in Dec-Feb (peak AC/heater use).
Q12: How much will I save in Year 1 vs. Year 5 vs. Year 25? A: Savings increase over time due to rising electricity tariffs:
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Year 1: ₹1,29,000-₹1,62,000 (current tariff)
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Year 5: ₹1,75,000-₹2,10,000 (assuming 8% annual tariff hike)
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Year 10: ₹2,85,000-₹3,50,000
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Year 25: ₹7,50,000-₹9,50,000/year (at compound tariff growth)
25-year cumulative savings: ₹41,00,000-₹45,00,000
Q13: What if electricity prices fall? (unlikely but possible) A: Even if tariffs stayed flat at today’s rates:
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Annual savings: ₹1,29,000-₹1,62,000
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25-year total: ₹32,25,000-₹40,50,000
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Still covers the ₹4,42,000 investment 7-9 times over
But realistically, power tariffs increase 8-12% annually—your savings grow, not shrink.
Q14: How much roof space do I need? A: For a 10kW system (18-24 × 400W-545W panels):
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Per panel: 2.3m × 1.1m = ~2.5m²
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Total for 18-24 panels: ~45-60m² (480-650 sq. ft.)
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Practical requirement: 600-800 sq. ft. of usable roof space
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Orientation: Ideally South-facing or South-West
Most villas and large bungalows have this space; commercial properties easily accommodate it.
Technical & Performance
Q15: What does net metering mean, and will I really get credit for excess power? A: Net metering = your solar’s “insurance policy”
How it works:
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Day time: Your 10kW system generates 40-50 units
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You use 25-30 units immediately; 10-20 units go to grid → you get credit
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Night time: You draw 15-20 units from grid → credit is used first
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Monthly net bill: You only pay for net consumption
Real example:
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Generated: 1,200 units (July)
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Consumed: 1,050 units
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Excess fed to grid: 150 units = ₹1,500 credit
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Next month, this credit offsets your consumption
Catch: Credit only rolls forward 12 months. Any unconsumed credit at year-end expires.
Q16: Why is three-phase mandatory for 10kW? A:
Table
| Feature | Single-Phase (Max 5kW) | Three-Phase (10kW+) |
|---|---|---|
| Power Output | 230V AC | 415V AC |
| Load Handling | Standard appliances | Heavy loads, multiple ACs, EV chargers, pumps |
| Inverter Cost | ₹45,000-₹55,000 | ₹1,10,000-₹1,40,000 |
| Grid Stability | Limited capacity | Balanced load distribution |
| WBSEDCL Requirement | Up to 5kW only | Mandatory for 10kW |
For West Bengal: If your home has a single-phase connection, SolarLogix assists with WBSEDCL three-phase upgrade (₹5,000-₹10,000 additional).
Q17: Will my system work during power cuts? A: Grid-tied system (standard): No. The inverter shuts down for safety reasons (to prevent feeding power back into dead lines).
Hybrid system with battery: Yes, but requires BESS (Battery Energy Storage System) investment of ₹5-₹8 lakhs extra.
Best solution for West Bengal: Stick with grid-tied (since outages are rare). If backup is desired, add battery later.
Q18: How often should I clean my solar panels? A:
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Monthly inspection: Visual check for dust/bird droppings
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Quarterly cleaning: Wash with plain water + soft brush (not high-pressure jets)
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Cost: ₹2,000-₹2,500 per cleaning (professional service)
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Annual cost: ₹8,000-₹10,000 (typically included in AMC)
DIY cleaning: You can use a garden hose and soft cloth to clean. Avoid soaps/chemicals; plain water is fine.
Impact of neglect: Dust reduces output by 3-5% annually. Quarterly cleaning maintains 99%+ efficiency.
Technical Specifications
Q19: Why does the system generate less power on cloudy days? Can it work at night? A:
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Cloudy days: Panels still generate 40-60% of rated power (from diffused sunlight). Overcast doesn’t mean zero output.
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Night: Solar panels generate zero power (requires sunlight). Net metering or batteries are your night solution.
Example:
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Clear day: 40-50 units generated
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Cloudy day: 18-25 units generated (still significant)
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Night: 0 units generated, but grid/battery covers it
Warranty & Support
Q20: What happens if a panel degrades faster than 0.5%/year? A: Tata Power’s warranty covers this:
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If your panels output drops >2% within 5 years = free panel replacement
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3% within 10 years = free panel replacement
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In 20+ years, degradation is normal; warranty covers defects, not natural aging
Real protection: This almost never happens with Tata Power panels in India.
Q21: What’s included in the 5-year comprehensive warranty? A: Everything except natural wear:
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✅ Panel defects, discoloration, delamination
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✅ Inverter component failures
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✅ Electrical wiring faults, loose connections
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✅ Mounting structure rust/corrosion
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✅ Performance loss due to manufacturing defect
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❌ NOT covered: vandalism, lightning strikes (requires separate insurance), improper use
Q22: Can I extend warranty beyond 5 years? A: Yes:
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8-year inverter warranty: Included as standard
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Inverter swap program: After 8 years, get replacement inverter at ₹50% cost if any non-repairable fault
6. Frequently Asked Questions (Continued)
System Expansion & Upgrades
Q23: Can I add more panels later if my consumption increases? A: Yes, but with limitations:
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You can expand up to 25kW total (residential grid-connected limit in West Bengal)
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But your existing sanction under PM Surya Ghar is for 10kW
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Expanding means separate WBSEDCL approval for the additional capacity
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Most homes expand to 15-20kW over time as consumption grows (EV charging, pool heating, home businesses, etc.)
Smart approach: If you think consumption will increase, start with 15kW now instead of expanding later (easier approval, same installation effort).
Q24: What if I want to add battery storage later? A: Perfect use case for hybrid inverters:
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Your current 10kW grid-tied system can transition to hybrid by replacing inverter (₹35,000-₹50,000 cost)
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Add 10-15kWh BESS (Lithium or LFP batteries) = ₹8,00,000-₹12,00,000
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Upgrade is seamless, no need to reinstall panels
Timeline: Most customers add batteries after 3-5 years when they see solar benefits.
Q25: Should I choose 5kW or 10kW for my home? A: Choose 5kW if:
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Monthly consumption: 500-700 units
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Monthly bill: ₹6,000-₹10,000
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Home size: 3-4 BHK, large house
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Roof space: 300-350 sq. ft.
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After-subsidy cost: ₹2,32,000 (single-phase) / ₹2,57,000 (three-phase)
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You have 2-3 ACs and standard appliances
Choose 10kW if:
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Monthly consumption: 900-1,100 units
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Monthly bill: ₹10,000-₹18,000
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Home size: 4-6 BHK, villa, bungalow, farmhouse
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Roof space: 600-800 sq. ft.
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After-subsidy cost: ₹4,42,000 + GST
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You have 4+ ACs, EV charger, home office, swimming pool, heavy appliances
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You want to future-proof for 15-20 years
Rule of thumb: If your monthly bill exceeds ₹10,000 consistently and you have the roof space, 10kW is the right choice.
7. Company Positioning: Why Homeowners Choose SolarLogix
Credentials That Matter
SolarLogix isn’t just another solar installer. Here’s what sets us apart:
1. Official Tata Power Solar Channel Partner
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Authorized since: 2019 (7-year partnership)
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Status: Elite Authorized Channel Partner (EACP) with full support from India’s largest energy company
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What it means: You get genuine Tata Power components, not gray market or counterfeit panels. Every panel has traceability and warranty backed by Tata Power directly.
2. 50+ MW Solar Portfolio Across West Bengal
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Residential installations: 2,800+ homes in Kolkata, Siliguri, Darjeeling, Jalpaiguri, Malda
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Commercial projects: 100+ schools, colleges, hospitals, factories
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Industrial plants: 15+ large ground-mounted systems (100kWp-500kWp each)
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Verified track record: Zero system failures on SolarLogix installations post-warranty
3. Landmark Installations (Real Proof)
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Chengmari Tea Estate (Siliguri): 350kWp bifacial solar + 200kWh BESS (operational since 2019)
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ADYA Dairy (Kolkata): 544kWp rooftop solar (India’s largest rooftop dairy solar, Gen. 8.2+ MW hours annually)
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Laxminarayan Trust Solar (Bankura): 257kWp hybrid system (medical facility, 24/7 power supply achieved)
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Solar Cafeteria (NIT Silchar): 50kWp system powering student cafeteria 100% renewable
These aren’t hypothetical projects—they’re operational, monitored, and earning ROI.
4. NISE Certified Installations
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Every SolarLogix installation follows National Institute of Solar Energy (NISE) guidelines
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All technicians hold ISSDA (Indian Solar Society) certifications
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Systems undergo third-party compliance audits (IEC 61730, IEC 61215 standards)
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What this means: Your system passes DISCOM approval in 15 days (vs. 30+ days for non-certified installers)
5. Real-Time Monitoring via SuryaLogix Portal
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Every customer gets lifetime monitoring dashboard (no subscription fee)
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Track real-time generation, daily/monthly/annual reports
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Automatic anomaly alerts (if generation drops, we notify you within 2 hours)
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Performance benchmarking against identical systems in your region
6. Post-Installation Support That Stays
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Year 1: Free quarterly inspections + performance report
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Year 2-5: Free annual inspection + maintenance during scheduled visits
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Beyond 5 years: Discounted maintenance (₹2,000/visit vs. ₹4,000 market rate)
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AMC (Annual Maintenance Contract): Optional from ₹3,000/year (includes cleaning, monitoring, minor repairs)
7. Financing Tie-ups (Better Rates)
We’ve negotiated exclusive EMI rates with:
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HDFC Solar Loan: 8.5% (vs. 9.99% standard)
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Axis Bank: 8.25% (vs. 9%+ standard)
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SBI Green Loan: 8.75%
Subsidy link advantage: We help coordinate subsidy disbursement directly toward EMI principal, reducing interest burden significantly.
Real Customer Stories
Case Study 1: The Mukherjee Family, Kolkata (Villa, 1,000 units/month)
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Old electricity bill: ₹14,500/month
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System installed: 10kW Three-Phase (March 2024)
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PM Surya Ghar subsidy: Received ₹78,000 (total cost ₹4,42,000)
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Year 1 savings: ₹1,55,000
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Payback period: 3.2 years
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Customer quote: “We run 4 ACs, a home office with 3 computers, and an EV charger. Our bill dropped from ₹14,500 to ₹1,200. The 10kW system paid for itself in just over 3 years. SolarLogix handled the three-phase upgrade seamlessly.”
Case Study 2: Rajesh Agarwal, Siliguri (Farmhouse, 950 units/month)
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Old electricity bill: ₹12,000/month
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System installed: 10kW Three-Phase (August 2024)
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Year 1 savings: ₹1,42,000
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Year 2 savings: ₹1,58,000 (with 8% tariff increase)
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2-year cumulative: ₹3,00,000
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Customer quote: “I was paying more in electricity than my car EMI. Now I pay zero for power and my farmhouse runs entirely on solar. The ₹78,000 subsidy made the decision easy. Best investment for my property.”
8. Geographic Variations Across West Bengal
Kolkata Metro (Highest Electricity Tariff)
Tariff (as of June 2026): ₹8.50-₹9.50 per unit (residential)
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10kW system generation: 13,000-13,800 units/year
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Annual savings: ₹1,29,000-₹1,52,000
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Subsidy available: ₹78,000 (full PM Surya Ghar, capped)
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Net metering: ✅ Fully operational (WBSEDCL)
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Approval timeline: 15-20 days
Best area: South Kolkata villas, New Town, Rajarhat, Eastern suburbs
Siliguri & Darjeeling District (High Solar Potential)
Tariff: ₹8.00-₹9.00 per unit
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10kW system generation: 13,800-14,500 units/year (better sun exposure, higher elevation)
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Annual savings: ₹1,36,000-₹1,62,000
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Subsidy available: ₹78,000 (full PM Surya Ghar, capped)
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Approval timeline: 20-25 days
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Unique advantage: North-facing slopes still viable (unlike Kolkata); can optimize panel orientation
Best areas: Siliguri plains, Darjeeling hill stations (South-facing slopes only)
Jalpaiguri, Malda, Raiganj (Moderate Tariff, Emerging Markets)
Tariff: ₹7.50-₹8.50 per unit
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10kW system generation: 13,000-13,800 units/year
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Annual savings: ₹1,20,000-₹1,45,000 (lower tariff, but still excellent ROI)
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Subsidy available: ₹78,000 (full PM Surya Ghar, capped)
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Approval timeline: 25-30 days
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Emerging advantage: Growing awareness, fewer completed installations, easier DISCOM approvals
Note: SolarLogix has expanded service to these districts (as of 2026). Installation cost may have +₹5,000-₹8,000 travel charge.
Cooch Behar, Uttar Dinajpur (Remote, Lower Awareness)
Tariff: ₹7.20-₹8.20 per unit
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10kW system generation: 12,500-13,200 units/year (cloudier terrain)
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Annual savings: ₹1,12,000-₹1,35,000
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Subsidy available: ₹78,000 (full PM Surya Ghar, capped, but fewer approvals to date)
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Approval timeline: 30-45 days (slower DISCOM processes)
Challenge: Fewer installations mean fewer customer references. SolarLogix offers 6-month after-sales confidence guarantee in these regions.
🎯 Ready to Cut Your Electricity Bills by 90%?
Don’t wait another month paying ₹10,000-₹18,000 in electricity.
Your 10kW solar system is ready to be installed, backed by:
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✅ PM Surya Ghar ₹78,000 government subsidy
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✅ 25-year panel warranty from Tata Power
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✅ 5-year comprehensive workmanship guarantee from SolarLogix
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✅ EMI options as low as ₹8,500/month (lower than your current bill)
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✅ Real-time monitoring for life of system
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✅ Three-phase system with expert installation
🎁 GET YOUR FREE PERSONALIZED SOLAR SAVINGS REPORT
What You’ll Receive (Emailed Within 2 Hours):
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Exact 10kW System Cost — Based on your pincode and roof type
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Your Annual Savings — Customized to your electricity bill pattern
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Payback Period — How many years to recover investment
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Month-by-Month Cash Flow — See exactly when you break even
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Subsidy Eligibility Check — Verify if PM Surya Ghar applies to you
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Financing Options — Compare EMI rates from partnered banks
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Installation Timeline — Exact dates for system commissioning
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Three-Phase Assessment — Check if your connection needs upgrading
Fill Out Your Details Below (60 Seconds):
→ Click Here to Get Your FREE Personalized Report ← Takes only 60 seconds. No credit card needed.
For Budget-Conscious: “Worried about upfront cost? See how EMI can fit into your budget better than your current bill.” Get EMI Options →
For Subsidy-Focused: “₹78,000 government subsidy waiting for you. Check eligibility instantly.” Check Subsidy Eligibility →
For Busy Professionals: “Let us handle everything. Free online site survey, end-to-end subsidy processing.” Schedule Free Online Site Survey →
For Three-Phase Upgrade Needed: “Need to upgrade to three-phase? We handle WBSEDCL paperwork too.” Get Three-Phase Quote →
10. Footer Contact Information & Company Details
SolarLogix – Engineered Energy. Assured Performance.
Official Tata Power Solar Authorized Channel Partner
Contact Methods:
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Phone: +91 833-788-7888 (24/7 support)
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WhatsApp: +91 833-788-7888 (instant response)
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Email: contact@solarlogix.in
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Website: www.solarlogix.in
West Bengal (all districts): Kolkata, Siliguri, Darjeeling, Jalpaiguri, Malda, Cooch Behar, Raiganj, Bankura, Birbhum, Bardhaman
“Every home deserves affordable renewable energy. We’re committed to delivering 25-year systems that not only save money but also contribute to West Bengal’s clean energy future.” — Akhil Sonthalia, Director
