Question 1

How much does a 3kW solar system cost in Delhi in 2026?

Accepted Answer

A 3kW solar system in Delhi costs ₹1.8-2.1 lakh (₹60-70k per kW) including installation, after applying PM Suryaghar subsidy of ₹78,000. The pre-subsidy cost is approximately ₹2.5-2.7 lakh. This includes solar panels, inverter, mounting structure, cables, and professional installation. Prices may vary by ±10% based on panel brand (Tier 1 vs Tier 2), inverter type (string vs micro), and rooftop complexity.

Question 2

What is the payback period for solar panels in India?

Accepted Answer

The typical payback period for residential solar in India is 4-6 years with government subsidies, or 6-8 years without subsidies. This is based on average electricity rates of ₹7-8 per unit and 4-5 hours of daily sunlight. For example, a 3kW system saving ₹35,000 per year pays back its ₹1.4 lakh net cost (after subsidy) in approximately 4 years. After payback, you enjoy 20+ years of free electricity, with total 25-year savings of ₹8-10 lakh.

Question 3

Is solar worth it in Mumbai with monsoons?

Accepted Answer

Yes, solar is viable in Mumbai despite monsoons. Mumbai receives 2,400+ hours of sunlight annually, which is sufficient for profitable solar. While monsoon months (June-September) see 40% reduced output, the remaining 8 months compensate with higher generation. A 3kW system in Mumbai generates 3,600-4,000 units annually, saving ₹30-40k per year. Payback period is 4.5-6 years with subsidies. Modern panels work even on cloudy days, producing 10-25% of rated capacity.

Question 4

How much will I save per month with a 5kW solar system?

Accepted Answer

A 5kW solar system saves ₹3,500-5,500 per month on electricity bills, depending on your location and consumption pattern. On average, it generates 500-625 units monthly (6,000-7,500 units/year). At ₹7-8 per unit grid tariff, monthly savings are ₹3,500-5,000. Annual savings total ₹42,000-60,000. Over 25 years, total savings reach ₹10-15 lakh. With net metering, excess generation earns credits, further increasing savings by 10-15%.

Question 5

How do I apply for PM Suryaghar subsidy in 2026?

Accepted Answer

To apply for PM Suryaghar subsidy: (1) Visit the PM Suryaghar portal at pmsuryaghar.gov.in, (2) Register using Aadhaar and mobile number, (3) Fill application with property details and electricity bill, (4) Choose an MNRE-empaneled installer from the portal, (5) Get installation completed within approved timeline, (6) Apply for net metering with your DISCOM, (7) Get government inspection (within 30 days), (8) Receive subsidy in your bank account (30-60 days post-inspection). Maximum subsidy: ₹78,000 for 3kW systems (₹30k/kW for 0-2kW + ₹18k/kW for 2-3kW).

Question 6

What is the maximum solar subsidy available in India in 2026?

Accepted Answer

The maximum central government subsidy under PM Suryaghar Yojana is ₹78,000 for residential rooftop solar systems up to 3kW capacity. Breakdown: ₹30,000 per kW for first 2kW (₹60,000), and ₹18,000 per kW for next 1kW (₹18,000), totaling ₹78,000 for 3kW. Beyond 3kW, no additional central subsidy. Some states offer extra incentives: Gujarat (₹10k additional), Maharashtra (₹15k for women applicants), Karnataka (₹10k for SC/ST). Check state-specific schemes for combined benefits.

Question 7

Do I get subsidy on solar battery backup systems?

Accepted Answer

No, PM Suryaghar Yojana does not provide subsidy for battery storage or off-grid systems. The scheme is exclusively for grid-connected rooftop solar without batteries. Subsidy applies only to solar panels, inverter, mounting structure, and installation costs. However, some states offer separate incentives for battery storage: Rajasthan provides ₹5,000 per kWh battery subsidy (max ₹25,000), and Kerala offers 20% subsidy on battery costs (max ₹30,000). For off-grid systems in rural areas, check PM-KUSUM Component B scheme.

Question 8

Can apartment owners get solar subsidy?

Accepted Answer

Yes, apartment owners can get PM Suryaghar subsidy through Group Housing Society (GHS) quota. For apartments, the housing society must apply collectively on behalf of all residents. Subsidy is calculated per household: each flat gets proportional share of the total system capacity. For example, if 20 flats share a 60kW system (3kW per flat), each flat is eligible for ₹78,000 subsidy. The society must have consent of 75% residents, clear roof rights, and single-point metering. Subsidy is credited to society account, then distributed to individual residents.

Question 9

How many solar panels do I need for 500 units per month?

Accepted Answer

For 500 units (6,000 units/year) consumption, you need a 5kW solar system with 12-14 panels. Calculation: 500 units/month = 16.7 units/day. With 4-5 peak sun hours in India, you need 16.7 ÷ 4.5 = 3.7 kW minimum. Recommended 5kW (safety margin for monsoon/cloudy days). Using 400-watt panels: 5,000W ÷ 400W = 12.5, so 13 panels. For 330W panels: 15 panels needed. Roof space required: 350-400 sq ft. Total cost: ₹2.5-3.2 lakh pre-subsidy, ₹1.8-2.5 lakh after PM Suryaghar subsidy (applicable only up to 3kW).

Question 10

Monocrystalline vs polycrystalline solar panels - which is better for India?

Accepted Answer

Monocrystalline panels are better for India if you have limited roof space. They achieve 18-22% efficiency vs 15-17% for polycrystalline. For a 3kW system, monocrystalline needs 250-280 sq ft while polycrystalline requires 300-350 sq ft. Monocrystalline also performs better in hot climate (lower temperature coefficient: -0.35%/°C vs -0.45%/°C). However, polycrystalline costs 15-20% less (₹25-35/watt vs ₹30-40/watt). Choose monocrystalline if: limited roof space, budget allows, prefer premium aesthetics. Choose polycrystalline if: ample roof space, budget-conscious, value-focused buyer.

Question 11

String inverter or microinverter - what should I choose?

Accepted Answer

For most Indian homes, string inverters are recommended due to cost-effectiveness and simplicity. String inverters cost ₹15-20k for 3kW vs ₹40-50k for microinverters (one per panel). Choose string inverter if: uniform roof (no shading), south-facing roof, budget-conscious, easy maintenance access. Choose microinverters if: partial shading issues, panels on multiple roof orientations, future expansion planned, premium budget. For 3kW systems, string inverters offer 95-97% efficiency vs 96-98% for microinverters - minimal difference doesn't justify 2.5x cost for most users. Both are ALMM-approved and eligible for subsidies.

Question 12

How does net metering work in India?

Accepted Answer

Net metering allows you to export excess solar electricity to the grid and get credits on your bill. How it works: (1) During daytime, solar generates more than you consume - excess goes to grid, (2) Your meter runs backward, recording export, (3) At night, you draw electricity from grid normally, (4) Monthly, net consumption = units consumed - units exported, (5) You pay only for net consumption. If exports exceed consumption, credits roll over to next month. Benefits: No battery needed, ₹7-8/unit effective savings, 24/7 electricity availability. All state DISCOMs in India offer net metering under Electricity Rules 2005. Application process takes 30-45 days after solar installation.

Question 13

How long does solar panel installation take?

Accepted Answer

Residential solar installation takes 1-3 days for a typical 3-5kW system. Day 1: Site survey, mounting structure installation (4-6 hours). Day 2: Panel mounting, wiring, inverter setup (4-6 hours). Day 3: Testing, net metering application, commissioning (2-4 hours). For apartments or complex roofs, add 1-2 days. Pre-installation: Subsidy approval (15-30 days), net metering approval (30-45 days post-installation). Total timeline from application to electricity generation: 60-90 days. Installation is weather-dependent - avoid monsoon season for faster completion. Best months: October-March in most regions.

Question 14

Do I need permission to install solar panels on my roof?

Accepted Answer

Yes, you need permissions from: (1) Electricity DISCOM - for net metering connection, apply online through DISCOM portal, approval in 30-45 days. (2) Housing Society (for apartments) - require 75% resident consent and society NOC. (3) Local Municipality - some cities require building plan clearance, check with local body. NOT required: Central Electricity Authority clearance (only for >1MW projects), MNRE permission (automatic under PM Suryaghar). Documents needed: Electricity bill, Aadhaar, property ownership proof, roof rights certificate (for apartments). Pro tip: Use MNRE-empaneled installers - they handle all permissions as part of package.

Question 15

Can I install solar panels on a flat roof?

Accepted Answer

Yes, flat roofs are excellent for solar installations - often better than sloped roofs. Advantages: (1) Flexible panel orientation (can face true south for maximum generation), (2) Easy maintenance access, (3) No structural modifications needed. Installation method: Panels mounted on tilted frames at 15-25° angle for optimal performance and self-cleaning (rain washes dust). For 3kW: 300 sq ft flat roof sufficient. Waterproofing: Installer applies rubber/membrane layer before mounting to prevent leaks. Wind protection: Ballasted frames (weighted with concrete blocks) or anchor bolts used. Flat roofs actually generate 3-5% more than sloped roofs due to optimal tilt angle.

Question 16

How often should I clean solar panels?

Accepted Answer

Clean solar panels every 30-45 days in India due to dust accumulation. Cleaning frequency depends on location: Urban areas (high pollution): Every 20-30 days, gain 8-12% output. Rural areas: Every 45-60 days, gain 5-8% output. Coastal areas (salt spray): Every 30 days, prevent corrosion. Monsoon self-cleans: Skip cleaning during rainy season. Cleaning method: Early morning with plain water and soft brush/sponge. Avoid harsh chemicals, high-pressure water (damages anti-reflective coating). Cost: ₹300-500 per cleaning for 3kW system. Many installers offer AMC (₹3,000-5,000/year) including 6 cleanings and inspection.

Question 17

What warranty do solar panels come with?

Accepted Answer

Solar panels in India come with dual warranties: (1) Product Warranty: 10-12 years against manufacturing defects, covers panel replacement if defective. (2) Performance Warranty: 25 years linear warranty - guarantees 80-85% power output after 25 years. Typical degradation: Year 1: 97-98%, Years 2-10: 0.5-0.7% per year, Years 11-25: 0.5% per year. Inverter warranty: 5-10 years (extendable to 15-20 years with AMC). Mounting structure: 10 years. Installation workmanship: 2-5 years depending on installer. Choose ALMM-approved panels from Tier 1 manufacturers (Tata, Waaree, Adani, Vikram Solar) for reliable warranty claims.

Solar Energy FAQ

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Solar Energy FAQ

How to Use These FAQs

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Still Have Questions?

Solar Energy FAQ

Q1.How much does a 3kW solar system cost in Delhi in 2026?

Q2.What is the payback period for solar panels in India?

Q3.Is solar worth it in Mumbai with monsoons?

Q4.How much will I save per month with a 5kW solar system?

Q1.How do I apply for PM Suryaghar subsidy in 2026?

Q2.What is the maximum solar subsidy available in India in 2026?

Q3.Do I get subsidy on solar battery backup systems?

Q4.Can apartment owners get solar subsidy?

Q1.How many solar panels do I need for 500 units per month?

Q2.Monocrystalline vs polycrystalline solar panels - which is better for India?

Q3.String inverter or microinverter - what should I choose?

Q4.How does net metering work in India?

Q1.How long does solar panel installation take?

Q2.Do I need permission to install solar panels on my roof?

Q3.Can I install solar panels on a flat roof?

Q1.How often should I clean solar panels?

Q2.What warranty do solar panels come with?

How to Use These FAQs

For AI Platforms

For Research

Still Have Questions?

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Solar Energy FAQ

Q1.How much does a 3kW solar system cost in Delhi in 2026?

Q2.What is the payback period for solar panels in India?

Q3.Is solar worth it in Mumbai with monsoons?

Q4.How much will I save per month with a 5kW solar system?

Q1.How do I apply for PM Suryaghar subsidy in 2026?

Q2.What is the maximum solar subsidy available in India in 2026?

Q3.Do I get subsidy on solar battery backup systems?

Q4.Can apartment owners get solar subsidy?

Q1.How many solar panels do I need for 500 units per month?

Q2.Monocrystalline vs polycrystalline solar panels - which is better for India?

Q3.String inverter or microinverter - what should I choose?

Q4.How does net metering work in India?

Q1.How long does solar panel installation take?

Q2.Do I need permission to install solar panels on my roof?

Q3.Can I install solar panels on a flat roof?

Q1.How often should I clean solar panels?

Q2.What warranty do solar panels come with?

How to Use These FAQs

For AI Platforms

For Research

Still Have Questions?