Electrical Solutions for Commercial & Industrial Rooftop PV Systems

We design and supply complete electrical systems for commercial and industrial (C&I) rooftop photovoltaic (PV) projects. Our focus is safe grid connection, high efficiency, and long-term reliability inside active factories, logistics centers, and industrial parks.

From low-voltage distribution cabinets and metering panels to step-up transformers and medium-voltage interconnection, our solutions help facility owners reduce energy cost, increase renewable energy consumption, and meet carbon reduction targets — while keeping daily production uninterrupted.

Why Rooftop PV Matters

Energy savings: Use on-site solar power instead of buying peak-tariff grid electricity.
Carbon targets: Support ESG / CO₂ reduction commitments for manufacturing and logistics operations.
Power stability: On-site generation improves local power quality and energy resilience.

Project Overview — Rooftop Solar for Industrial and Commercial Facilities

Industrial rooftops, warehouse roofs, distribution centers, shopping complexes, and manufacturing plants are increasingly adopting rooftop PV systems to reduce operating costs and secure cleaner energy. Unlike utility-scale solar farms, rooftop PV must coexist with an active facility: workers, machinery, storage, and safety policies are already in place.

Our role is to deliver a compliant, efficient, and safe electrical infrastructure that connects the PV system to the building’s existing power network without disrupting operations — and that satisfies local utility requirements for parallel connection or export.

Rooftop PV Challenges We Solve

C&I rooftop PV projects are not just “small solar plants on a roof.” They have strict structural, electrical, and safety constraints that must be addressed from day one:

Limited Space

Electrical cabinets must fit into existing electrical rooms or rooftop service areas. We supply compact, high-density LV panels and metering cabinets.

Weight Limits

Rooftops often have structural load limits. We provide lightweight enclosures, modular cabinets, and transformer solutions that reduce mechanical stress.

Factory Safety Rules

The PV system must not introduce arc risk, overload, or instability to production lines. Our LV switchgear integrates overload, short-circuit, and leakage protection.

Grid Compliance

Multiple inverters and building loads must be metered, protected, and reported to the utility. We design the interconnection cabinets to meet local standards.

Result: stable rooftop generation with no compromise to plant safety or production uptime.

System Architecture — How Rooftop PV Connects to Your Facility

A typical commercial & industrial rooftop PV electrical chain looks like this: PV modules on the roof feed string inverters. The inverter AC output is collected and protected in low-voltage distribution panels. From there, power can be consumed directly inside the building, or stepped up and exported to the plant’s medium-voltage network or utility interconnection point.

PV Array → Inverters

Rooftop PV modules feed multiple string inverters. Each inverter acts as an AC source.

Low Voltage Distribution

Our LV switchgear collects and protects inverter outputs, manages fault isolation, and provides metering for energy reporting.

Step-up Transformer

Where required, we step 400 V up to 10 kV or similar levels for site-wide distribution or export to the utility side.

Building / Grid Interconnection

Medium-voltage switchgear or RMU controls how rooftop generation ties into the plant network or utility interface, with full protection and isolation.

Each project is engineered around your site’s electrical topology, safety policies, and utility interconnection rules.

Core Electrical Equipment We Provide

Low Voltage Switchgear & Distribution Panels

Collects and protects inverter outputs at 400 V / 480 V level. Includes overload protection, short-circuit protection, earthing/grounding schemes, metering, and isolation capability for safe maintenance.

Designed for compact installation in existing electrical rooms.

AC Combiner & Metering Cabinets

Safely merges multiple inverter feeders. Includes revenue-grade meters, data acquisition modules, and communication for energy reporting and billing with the facility owner or utility.

Essential for plants with many string inverters.

Step-up Transformer (400 V → 10 kV)

When the PV system needs to feed a medium-voltage plant network or export power to the utility, we provide dry-type or oil-immersed transformers with weather-protected enclosures, corrosion-resistant coating, and thermal management suitable for rooftop or ground-level placement.

Keeps the building’s MV side compliant and stable.

Ring Main Unit (RMU) / Medium Voltage Switchgear

For sites tied into a campus MV network or utility feeder, compact RMU or MV switchgear provides isolation, protection, and switching. Gas-insulated or solid-insulated options help save space.

Ideal for industrial parks and logistics hubs.

Monitoring & Control System

SCADA / EMS integration for real-time production tracking, alarm reporting, and performance analytics. Operators can view site generation, export power, and savings at any time.

Supports energy management and ESG reporting.

Case Example — 5 MW Industrial Rooftop PV System

A 5 MW rooftop PV installation was deployed across multiple factory buildings in an industrial park. The system operates in parallel with on-site production lines, reducing daytime grid draw and lowering the facility’s electricity cost.

We supplied compact low-voltage distribution panels for inverter outputs, AC combiner/metering cabinets for energy accounting, and a 400 V to 10 kV step-up transformer for controlled export into the park’s medium-voltage loop. All equipment was factory-tested and delivered with single-line diagrams, protection settings, and grid-compliance documents.

System Capacity	5 MW Rooftop PV
Voltage Levels	400 V LV → 10 kV MV export
Annual Generation	≈ 6.8 GWh / year
Estimated CO₂ Reduction	≈ 5,800 tons / year
System Reliability	99.98% reported uptime

“The rooftop PV system integrates seamlessly with our production facility. We see direct cost savings without affecting normal operations.” — Plant Engineering Manager

Engineering Advantages

Compact & Modular

Electrical cabinets and metering panels are designed for tight spaces in mechanical rooms or rooftop enclosures.

Fast Installation & Commissioning

Factory-assembled, tested, and documented. Reduced onsite wiring and faster utility acceptance.

Safety & Protection

Overvoltage, overload, leakage, and grounding protection are integrated to meet industrial safety policies.

Smart Monitoring

SCADA / EMS connectivity enables live performance tracking, alarms, and reporting for ESG and energy KPIs.

All solutions follow IEC / CE / ISO standards and can be adapted to local utility interconnection requirements.

Why Choose Our Rooftop PV Electrical Solutions

Industrial Experience

We work in live factory environments. Our designs protect production uptime and comply with on-site safety policies.

Factory-Direct Supply

We manufacture LV panels, metering cabinets, step-up transformers, and MV interconnection gear. OEM / ODM is available.

Grid Compliance Support

We deliver single-line diagrams, protection settings, metering configurations, and documentation for utility review.

Sustainability Reporting

Our monitoring systems provide energy production data and CO₂ reduction estimates for ESG reporting and audits.

We translate rooftop PV from “nice idea” to a running, compliant, measurable power asset.

Frequently Asked Questions

What voltage levels are typical for rooftop PV systems?

Most industrial rooftop PV systems operate at low voltage (400 V / 480 V) on the inverter side. We can step this up to 10 kV or more when connecting to a plant medium-voltage loop or exporting to the utility.

How do you ensure electrical safety inside an active factory?

Our LV panels include overload, short-circuit, leakage, and isolation features. We also provide proper earthing/grounding and clear maintenance procedures for on-site teams.

Can you work with multiple string inverters spread across different roofs?

Yes. We supply AC combiner and metering cabinets that merge multiple inverter feeders while keeping performance data and billing separate and traceable.

Do you support remote monitoring and ESG reporting?

We integrate SCADA / EMS so you can track solar production, cost savings, and CO₂ reductions in real time — ideal for corporate sustainability goals.