How much roof space is needed for a solar system?

High-efficiency Tier-1 bifacial panels require approximately 80 to 90 square feet of shadow-free rooftop space per kilowatt (kW). For example, a 3 kW residential system requires about 250–270 sq. ft., while a 10 kW commercial installation needs around 850–900 sq. ft. of RCC terrace or tin shed area.

How does PM Surya Ghar subsidy work in Bihar?

Residential consumers registered on the National Solar Portal receive Direct Benefit Transfer (DBT) subsidies directly in their bank accounts post-installation and DISCOM inspection: ₹30,000 for 1 kW, ₹60,000 for 2 kW, and up to ₹78,000 for 3 kW to 10 kW, alongside applicable Bihar State financial assistance.

Does an on-grid solar system provide power backup during grid outages?

Standard on-grid solar systems automatically disconnect during utility grid outages as a mandatory safety anti-islanding requirement to protect DISCOM line maintenance workers. For facilities requiring continuous power backup, we integrate zero-export diesel generator (DG) synchronizers or hybrid battery storage systems.

How does NBPDCL & SBPDCL net-metering work in Bihar?

A bi-directional net meter records electricity units exported to the grid during sunny hours and units imported at night. At the end of each billing cycle, you are billed only for the net difference. Excess units generated are carried forward to subsequent billing cycles.

Is rooftop solar financially suitable for my business or showroom?

Yes. Commercial tariffs in Bihar range from ₹7.50 to ₹9.50+ per unit. Commercial solar generates captive power during daytime peak operating hours, replacing high utility slab rates and recovering the initial capital outlay within 3 to 4 years.

How is commercial solar ROI and tax depreciation calculated?

Commercial solar assets qualify for 40% Accelerated Depreciation (AD) under Section 32 of the Income Tax Act in the first year of operation. Combined with energy bill savings and peak demand charge shaving, internal rates of return (IRR) typically exceed 25–30%.

How do I request a physical site survey in Bihar?

You can submit the estimate form at the top of this page or contact our Bhagalpur engineering team at +91 9153941645. Our technician will conduct an on-site structural check, shade analysis, and electrical panel inspection.

Engineered rooftop solar installation in Bihar by Shree Laxmi Traders

Bhagalpur, Bihar • Rooftop Solar EPC

Turn Your Rooftop Into a Long-Term Energy Asset.

Professional rooftop solar installation for homes and businesses across Bihar — designed around your electricity usage, property and energy needs.

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Headquartered at Ramsar Chowk, Bhagalpur • SBPDCL & NBPDCL Net-Metering Liaison

Step 1 of 520% Completed

Get Your Solar Estimate

Answer 4 quick questions and we’ll help you understand the right solar option for your property.

BHAGALPUR BASED

HQ at Ramsar Chowk

REAL PROJECTS

Verified Bihar installations

TRANSPARENT ESTIMATES

Itemized pricing & metrics

PROFESSIONAL INSTALLATION

End-to-end net metering

Commercial & Industrial EPC

Your Electricity Bill Is an Operating Cost.

See whether rooftop solar makes financial sense for your business. Replace expensive peak-rate utility power with a 25-year captive renewable energy asset.

Retail & Showrooms

Offset daytime air-conditioning, high-bay lighting, and electronic display loads during your peak business hours.

Typical capacity: 5 kW – 30 kW

Hotels & Hospitals

Continuous 24/7 power management with smart DG-synchronization to drastically lower utility demand charges and diesel burn.

Typical capacity: 15 kW – 100 kW+

Factories & Warehouses

Turn large corrugated PEB tin sheds into captive power plants to run heavy motor drives, cold storage, and machinery.

Typical capacity: 25 kW – 500 kW+

Interactive Feasibility Assessment

Commercial Solar Mini ROI

Indicative financial output based on verified Bihar commercial utility tariff data (SBPDCL / NBPDCL).

Monthly Electricity Bill: ₹50,000

Usable Rooftop Area: 3,500 sq. ft.

Active Profile: retail Facility (Tariff modeled at ₹8.50/kWh blended).

Estimated Solar Capacity

35 kW

Tier-1 On-Grid Inverter Array

Estimated Annual Yield

~50,400 Units

Based on ~120 kWh/kW monthly

Potential Annual Savings

₹4,28,400

Est. Payback: ~4.1 Years

Indicative Project Cost

₹17,50,000

Turnkey EPC & BOS included

Indicative estimate only. Final generation and system cost depend on structural load testing, tilt angle, and DISCOM sanctioned contract load. Commercial meters qualify for Section 32 40% Accelerated Depreciation tax benefits (PM Surya Ghar residential CFA is not applicable to commercial tariffs).

Verified Engineering Portfolio

Real Projects. Real Bihar Locations.

See what we have actually built. Every system is backed by verifiable meter data, DISCOM approvals, and real generation metrics.

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5 kW rooftop solar installation in Bhagalpur, Bihar

FEATURED CASE STUDY

5 kW On-Grid Rooftop Solar Installation in Tilkamanjhi, Bhagalpur

Bhagalpur, Bihar • NBPDCL (North Bihar Power Distribution Company Ltd) Net-Meter

BHAGALPUR5 kWOn-Grid Rooftop Solar

Monthly Bill (Before)

₹6,500 - ₹7,200

High grid tariff

Monthly Bill (After)

₹600 - ₹800

Fixed meter charge only

Annual Savings

approx. ₹58,000 / year

~7,200 Units/yr yield

A joint family residence in Tilkamanjhi, Bhagalpur needed a resilient solar system to cover high electricity usage including 3 AC units, submersible pump, and everyday home appliances.

Module: Tier-1 Mono PERC 545W Panels

Inverter: 5 kW Three-Phase Grid-Tied Inverter

Subsidy: ₹98,000 (Capped Combined Central + Bihar Subsidy)

Status: Commissioned with NBPDCL

“The Bhagalpur team at Shree Laxmi Traders is very responsive and knowledgeable. They guided us step-by-step through the government portal and installed very neat wiring.”

Sunita Devi & Dr. R. K. Singh

Residents, Tilkamanjhi, Bhagalpur

3.3 kW

Residential

Patna, Bihar

3.3 kW Rooftop Solar Installation in Kankarbagh, Patna

Annual Generation:approx. 4,750 Units (kWh)

Annual Savings:approx. ₹38,000 / year

The homeowner wanted to retain usable rooftop terrace space for evening gatherings while generating enough power to offset 2 AC units and a refrigerator during hot summer months.

READ DETAILED SPECIFICATIONS

5 kW On-Grid Rooftop Solar Installation in Tilkamanjhi, Bhagalpur

5 kW

Residential

Bhagalpur, Bihar

5 kW On-Grid Rooftop Solar Installation in Tilkamanjhi, Bhagalpur

Annual Generation:approx. 7,200 Units (kWh)

Annual Savings:approx. ₹58,000 / year

High electricity tariff slab rates resulting in ₹80,000+ yearly power bills, alongside frequent voltage fluctuations in the local grid area.

READ DETAILED SPECIFICATIONS

10 kW

Commercial

Gaya, Bihar

10 kW Commercial Rooftop Solar for Diagnostic Center in AP Colony, Gaya

Annual Generation:approx. 14,800 Units (kWh)

Annual Savings:approx. ₹1,25,000 / year

Daytime commercial tariff of ₹8.50+/unit causing heavy monthly operational overheads for medical refrigeration and diagnostic lab machinery.

READ DETAILED SPECIFICATIONS

Instant Feasibility Benchmark

Estimate Your Solar Return in Seconds

Quickly model your rooftop generation capacity and annual electricity savings based on Bihar tariff slabs.

Property Application

Monthly Electricity Bill₹35,000

Estimated System

25 kW

~36,000 units / yr

Indicative Savings

₹3,06,000

Est. Payback: ~4.1 yrs

Indicative benchmark. Detailed engineering drawing provided after physical survey.

Engineering Integrity

Why Shree Laxmi Traders

Built on technical precision, local accountability, and transparent energy execution.

ENGINEERING-LED

Designed around actual electricity usage.

Every rooftop system is sized against historical 12-month load profiles, terrace shadow modeling, and structural wind-load tolerances.

TRANSPARENT

Clear assumptions and indicative pricing.

Itemized equipment specifications, realistic generation models, and clear documentation with no hidden charges or misleading yield projections.

BHAGALPUR-BASED

Local presence with Bihar-focused service.

Permanent headquarters at Ramsar Chowk with dedicated ground engineering and technical support teams serving properties across Bihar.

END-TO-END SUPPORT

Assessment to installation & assistance.

From preliminary feasibility survey to Tier-1 procurement, physical mounting, SBPDCL/NBPDCL net-metering liaison, and subsidy paperwork.

Residential Government Initiative

Exploring PM Surya Ghar for Your Home?

The Central Government’s flagship Muft Bijli Yojana provides Direct Benefit Transfer (DBT) subsidies up to ₹78,000, combined with applicable Bihar State financial assistance.

Consumer Eligibility

Active domestic electricity connection with SBPDCL or NBPDCL.
Clear rooftop rights with unshaded terrace or tin roof space.
Electricity meter registered in the name of the applicant/property owner.

Applicable Financial Assistance

1 kW System: ₹30,000 Central CFA (+ ₹10,000 Bihar State DBT).
2 kW System: ₹60,000 Central CFA (+ ₹20,000 Bihar State DBT).
3 kW to 10 kW: ₹78,000 Central CFA (+ ₹20,000 Bihar State DBT, capped at ₹98,000).

Application Process

Step 1: Registration on National Solar Portal with Consumer ID.
Step 2: DISCOM Technical Feasibility Approval (TFR).
Step 3: Physical installation & SBPDCL/NBPDCL net-meter inspection.
Step 4: Direct subsidy credit to your linked bank account.

Installation Support

Procurement of ALMM-listed Mono PERC/TOPCon modules.
Elevated or flush hot-dip galvanized mounting structures.
Dedicated copper chemical earthing & SPD protection.
Complete liaison for net-metering commissioning paperwork.

Important Eligibility Distinction: PM Surya Ghar residential CFA is strictly reserved for domestic household meters. Commercial, industrial, and institutional connections are not eligible for residential subsidies, but qualify for 40% Section 32 Accelerated Depreciation tax benefits.

CHECK PM SURYA GHAR Calculate your residential subsidy →

Clear Answers

Frequently Asked Questions

Direct, engineering-backed answers to the most common rooftop solar inquiries in Bihar.

On-grid rooftop solar typically costs between ₹55,000 and ₹65,000 per kW before subsidy. For residential installations up to 3 kW, Central PM Surya Ghar assistance (₹78,000) plus Bihar State DBT subsidy (₹20,000) significantly reduces the net homeowner investment. Commercial systems (10 kW to 100 kW+) benefit from economies of scale at approximately ₹48,000–₹54,000 per kW.

Have a question not covered here? Speak directly with our technical team in Bhagalpur.Call +91 9153941645

Direct Bhagalpur Solar EPC Service

Ready to See What Your Rooftop Can Do?

Connect with our engineering team for an objective solar sizing, generation forecast, and net-metering roadmap for your property in Bihar.

CALCULATE MY SOLAR SAVINGS GET BUSINESS SOLAR PROPOSAL WHATSAPP US

Ramsar Chowk, Bhagalpur, Bihar 812007

+91 9153941645

Mon–Sat: 9:00 AM – 7:30 PM

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