Solar Energy for Industry

Commercial & Industrial Rooftop Solar EPC

Turn your unused factory roof into a power plant. Our rooftop solar systems cut electricity bills by 50–80% with zero interruption to your production. From 50 kW to 10 MW — we handle everything from design to DISCOM synchronization.

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What We Do

Turnkey Commercial Rooftop Solar EPC

We engineer and execute high-yield rooftop solar installations (50 kW to 10 MW) for factories, warehouses, and commercial complexes — delivering 50–80% electricity bill savings with zero downtime.

On-Grid, Hybrid & OPEX PPA Models
DISCOM Net Metering & CEIG Clearance
Zero Export Sync for DG Sets
25-Year Guaranteed Module Warranty
Vishwa Powertech Commercial Rooftop Solar PV Installation
Our Capabilities

Turnkey Industrial Rooftop Solar Solutions

From initial structural load assessment to final DISCOM net metering — complete in-house execution.

On-Grid Rooftop Solar EPC

Grid-tied industrial systems (50 kW to 10 MW+) that feed solar generation directly into your factory busbar. Excess power flows back through net metering, converting electricity bills into financial assets with 3 to 4 years payback.

40% Tax Depreciation & CAPEX/OPEX

Take advantage of 40% accelerated income tax depreciation benefits under self-owned CAPEX models. We also facilitate zero-investment OPEX / PPA agreements with 3rd-party investors for discounted solar power rates.

Zero Export DG Controllers

For industrial units operating heavy diesel generator sets. Our fast zero-export limiters prevent reverse power flow into DG sets during grid outages, preserving generator health while keeping DISCOM contracts compliant.

CEIG & DISCOM Approvals

Complete government liaisoning across Gujarat (UGVCL, PGVCL, DGVCL, MGVCL, GEDA). We manage drawing approvals, CEIG inspection certificates, CT/PT ratio testing, and net meter commissioning without third-party delays.

Solar Water Heating & Lighting

Industrial ETC and FPC Solar Water Heaters (100L to 500L+ capacity) with marine-coated inner tanks and PUF insulation (MNRE approved, 6-yr warranty), plus standalone solar LED campus lighting.

Cloud SCADA & Monitoring

String-level cloud monitoring portals providing daily generation telemetry, inverter efficiency curves, and automated fault alerts straight to your phone and plant management dashboard.

Our Process

How Your Rooftop Solar Project Gets Done

A straightforward four-step process. No hidden steps, no surprises.

1

Site Survey & Feasibility

Our engineers visit your factory, measure usable roof area, check structural strength, record shadow patterns, and review your electricity bills. Feasibility report delivered within 3 working days.

2

System Design & Proposal

We prepare a detailed technical proposal — system sizing, module layout, inverter selection, cable routing, expected generation, and financial payback analysis.

3

Procurement & Construction

We procure Tier-1 panels, inverters, and mounting structures. Installation completed in 2–6 weeks depending on size without interrupting your production.

4

Commissioning & Grid Sync

Full electrical testing, CEIG inspection filing, and DISCOM net metering activation. Plant goes live after every safety check passes.

Technical Specifications

Commercial Rooftop Solar Engineering Parameters

Comprehensive technical specification matrix for industrial rooftop solar PV installations.

System Specifications & Compliance Matrix
Tier-1 Components Only
Technical Parameter Engineering Specification Applicable Standard
System Sizing Range 10 kWp to 10 MWp+ Industrial Capacity CEA Technical Standards
PV Module Technology Mono PERC / N-Type TOPCon Bifacial (540 Wp – 585 Wp) IEC 61215 / IEC 61730 / IS 14286
Inverter Topology String Inverters (98.8% Peak Efficiency, Multi-MPPT) IEEE 1547 / IEC 62109-1/2
Mounting Structure Hot-Dip Galvanized Steel (80 µm) / Anodized Aluminium IS 800 / Wind Rated 170 km/h
Grid Interconnection 415V LT / 11kV HT Net Metering Synchronization DISCOM / CEIG Approved
DG Integration Zero Export Limiters with Reverse Power Protection IEEE 1547.2 / DG Synchronized
SCADA & Monitoring Cloud Monitoring Portal with App & Modbus Telemetry Encrypted Modbus Protocol
Performance Warranty 12-Year Product Warranty + 25-Year Linear Output Guarantee 84.8% Output @ Year 25
Why Vishwa Powertech

Why Factories and Businesses Trust Us

Engineering precision, certified quality, and dedicated execution from start to finish.

We're Engineers, Not Dealers

Our team includes licensed electrical engineers who design every system custom from scratch. No cookie-cutter proposals or outsourced engineering.

Single Point of Accountability

One dedicated engineering team manages your project from site survey and design through civil works, installation, CEIG filing, and DISCOM synchronization.

IEC & IS Certified Quality

Every panel, inverter, transformer, and cable we install meets strict IEC and BIS Indian Standard certifications for maximum lifetime safety and efficiency.

Post-Commissioning O&M Support

We remain your long-term partner with proactive Annual Maintenance Contracts (AMC), thermal imaging audits, and fast-response repair services.

250+
MW Solar Installed
150+
Industrial Projects
3.2 Yrs
Avg. Financial Payback
99.9%
Grid Uptime Record
Frequently Asked Questions

Common Questions About Rooftop Solar

Roughly 10,000 to 12,000 square feet of shadow-free roof area. This can vary depending on your panel wattage and mounting angle. For RCC roofs we use a fixed tilt, for sheet roofs we mount flush along the slope. Our site survey gives you the exact usable area after accounting for parapet walls, HVAC units, and water tanks.
In a CAPEX model, you buy the system outright — higher upfront cost, but you own the asset and get 100% of the savings and tax benefits (accelerated depreciation). In OPEX/PPA, a third-party investor owns the system on your rooftop, and you pay a fixed per-unit rate (usually ₹3–4/unit) which is much cheaper than grid power. No upfront investment at all.
Not if installed properly. For RCC roofs, we use concrete ballast blocks or chemical anchor bolts — no drilling through the waterproofing membrane. For metal sheet roofs, we use rail clamps that grip the standing seam without penetration. We do a structural load assessment before installation to confirm your roof can handle the additional 12–15 kg/sq.m weight.
In Gujarat (UGVCL/MGVCL/PGVCL/DGVCL), the process typically takes 30 to 60 days from application submission to meter change. We handle the entire process — online portal registration, feasibility letter, CEIG inspection coordination, and final meter commissioning. Some states are faster, some take longer, but we track every step so nothing sits idle.
Yes, we do end-to-end work. That includes DC cabling from panels to inverter, AC cabling from inverter to your existing LT/HT switchboard, earthing system installation, lightning arrestor if needed, and net meter box wiring. We also provide EPLAN electrical schematics for your factory records.
Very little. Panel cleaning once every 2–3 weeks (manual water wash or robotic cleaner for large systems), inverter filter cleaning every 6 months, and an annual thermography check to spot hot spots or loose connections. We offer Annual Maintenance Contracts (AMC) that cover all of this, including spare parts replacement under warranty.
Partner With Engineering Experts

Ready to Cut Your Factory Power Bill by Half?

Contact our team of senior electrical engineers and solar EPC specialists for a free rooftop survey and technical audit.

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