Electrical Solutions for Photovoltaic (PV) Power Plants
We provide complete medium- and low-voltage electrical solutions for photovoltaic (PV) power plants. Our systems cover everything from inverter-side distribution to medium-voltage grid connection and optional energy storage integration. The result is safe, reliable, and efficient power delivery — even in harsh operating environments.
Our solutions are designed for different PV application scenarios, including utility-scale ground-mounted solar farms, commercial & industrial (C&I) rooftop systems, and desert PV + energy storage hybrid stations.
Quick Facts
- Voltage levels: Low voltage → 10 kV / 33 kV / 35 kV medium voltage
- Core products: MV switchgear, LV distribution panels, ring main units (RMU), transformers, cable accessories
- Applications: Desert PV + energy storage, C&I rooftop PV, utility-scale ground PV
System Architecture of PV Electrical Solutions
Our PV electrical system architecture is designed to ensure stable generation, safe grid connection, and high efficiency. We support centralized inverters, string inverters, hybrid solar + storage clusters, and scalable multi-MW blocks.
PV Array / DC Side
High-efficiency PV modules feed DC power to inverters. We consider cable sizing, protection, and thermal limits from the beginning.
Inverter & LV Distribution
Low-voltage switchgear and distribution panels manage inverter output, overload protection, isolation, and metering.
Step-up Transformer
Transformers boost voltage from LV to the medium-voltage collection network (e.g. 10 kV / 33 kV / 35 kV).
MV Switchgear / RMU
Medium-voltage switchgear and ring main units provide protection, isolation, and safe connection to the substation and the grid.
Energy Storage (Optional)
Battery energy storage can be integrated for peak shaving, grid stability and night-time supply, especially in desert or remote sites.
This architecture supports centralized solar farms, rooftop industrial systems, and hybrid PV + ESS plants deployed in extreme environments.
Core Electrical Equipment for PV Projects
Medium Voltage Switchgear (10 kV / 33 kV / 35 kV)
Protects and controls the medium-voltage side of the PV plant, including step-up transformer output and substation interface. Compact design, high reliability, and SCADA-ready monitoring for real-time status and fault alarms.
Low Voltage Switchgear & Distribution Panels
Handles inverter output, feeder protection, measurement, and isolation on the AC low-voltage side. Modular structure, customizable busbar rating, and high thermal endurance for continuous operation in high-load environments.
Ring Main Unit (RMU)
Compact medium-voltage ring main units ensure reliable looped distribution, dual-source availability, and maintenance flexibility for large solar fields. Available in SF₆-insulated and solid-insulated designs.
Transformers (Dry-type / Oil-immersed)
Step-up and interconnecting transformers built for PV duty cycles. Options include sand-proof housing, corrosion-resistant coating, and high-temperature insulation for desert or coastal projects.
Cables & Accessories
PV cables, terminations, connectors, surge and isolation components designed for UV exposure, thermal cycling, and outdoor installation.
Technical Features & Advantages
High Environmental Resilience
Equipment can be engineered for high temperature, sand, salt mist, humidity, or limited rooftop space. Custom housings and coatings are available.
High Reliability
Stable long-term operation with low failure rates and extended maintenance intervals. Designed for continuous renewable generation duty.
Intelligent Monitoring
SCADA / remote supervision / data logging enable real-time performance tracking, grid compliance, alarm reporting, and predictive maintenance.
Fast Deployment
Modular design shortens onsite installation and commissioning time. Skid-mounted and containerized options are available for large plants and remote areas.
All systems follow IEC / CE / ISO standards and can be adapted to local grid codes and utility requirements.
Applications & Typical Project Types
| Application Scenario | Key Characteristics | Recommended Electrical Solution | Learn More |
|---|---|---|---|
| Desert PV + Energy Storage Station | Extreme high temperature, wind and sand environment, off-grid or weak-grid stability requirements. | Sand-proof MV switchgear, containerized low-voltage distribution for PCS, dry-type transformers, integrated battery energy storage. | View Desert PV + ESS Case → |
| Commercial & Industrial Rooftop PV | Limited installation space, light structural load, strict safety and power quality requirements for factories / warehouses. | Compact low-voltage distribution panels, protection and metering cabinets, safe grid-tie interface, smart monitoring for facility owners. | View Rooftop PV Case → |
| Utility-Scale Ground-Mounted PV Plant | High installed capacity, high collection voltage levels, long-distance transmission to substation or grid interconnection point. | 33 kV / 35 kV medium-voltage switchgear, RMU-based ring network, step-up transformers, centralized protection and SCADA integration. | View Utility-Scale PV Case → |
Each scenario requires a different electrical configuration. The detailed case pages explain how we adapt our switchgear, transformers, and distribution panels to match specific operating conditions and grid requirements.
Engineering Process & Quality Assurance
1. System Design
Electrical topology, voltage levels, protection coordination, and environmental adaption planning.
2. Manufacturing
In-house production of MV/LV switchgear, RMU panels, transformer units, and customized enclosures.
3. Factory Testing
Type tests and routine tests according to IEC / CE / ISO requirements. Each panel is inspected for safety, insulation, protection logic, and communication reliability.
4. On-site Commissioning
Final wiring, integration with SCADA / EMS, protection relay setting, grid compliance checks, and operator training.
Documentation, test reports, and compliance certificates are supplied to EPCs, owners, and grid operators.
Project Highlights
Desert PV + Energy Storage Station
Medium-voltage switchgear, containerized LV distribution for PCS, dry-type transformers, and integrated battery energy storage deployed in a high-temperature, high-sand environment.
View Full Case → Commercial & Industrial Rooftop PV System
Compact LV switchgear and protection cabinets designed for safe rooftop generation inside active factory and warehouse environments.
View Full Case → Utility-Scale Ground-Mounted PV Plant
High-capacity 33 kV / 35 kV medium-voltage collection, RMU ring network, and integrated SCADA for long-distance grid connection.
View Full Case → Why Choose Us
Proven PV Expertise
Experience in utility-scale solar farms, C&I rooftop systems, and harsh-environment solar + storage projects.
Factory Direct Supply
In-house production of MV/LV switchgear, RMU, and transformers with OEM/ODM capability and fast delivery.
Global Compliance
IEC / CE / ISO compliant solutions with full test reports and documentation for EPCs, owners, and utilities.
Custom Engineering
Tailored electrical configurations for local grid codes, load profiles, and environmental conditions.
From small commercial rooftops to multi-hundred-MW utility solar plants, we deliver dependable electrical infrastructure that keeps clean energy flowing.
Frequently Asked Questions
What electrical equipment is required for a PV power plant?
A typical PV plant requires low-voltage distribution for inverter output, step-up transformers, medium-voltage switchgear or RMU, protection relays, metering, cabling, and often SCADA integration.
Can you provide integrated solutions for PV + energy storage?
Yes. We deliver combined solutions where battery energy storage is containerized together with low-voltage distribution and is safely interconnected to medium- voltage switchgear for grid support and peak shifting.
What voltage levels are typical in utility-scale PV systems?
In utility-scale ground-mounted plants, inverter output is collected at low voltage, stepped up through transformers, and delivered to 10 kV / 33 kV / 35 kV medium-voltage networks before grid interconnection.
Do you offer customized switchgear for rooftop PV systems?
Yes. For commercial and industrial rooftops, we provide compact LV cabinets and protection panels that fit tight mechanical rooms and comply with facility safety policies.
Need a reliable electrical solution for your solar project?
Talk to our engineering team. We can provide technical proposals, equipment specifications, and compliance documentation for your PV, hybrid PV + storage, or industrial rooftop project.
Contact Our Engineer → 