The global transition toward renewable energy is driving unprecedented demand for reliable, efficient, and intelligent electrical distribution systems. As solar power plants continue to expand across Europe, the need for high-quality prefabricated substations, medium-voltage switchgear, distribution transformers, and integrated power distribution solutions has become increasingly important.
At Shenheng Power, we are proud to contribute to this transformation by providing customized electrical distribution solutions for international renewable energy projects.
One of our recent milestones is the successful delivery of 16 prefabricated substations for a large-scale photovoltaic mining project in Poland. This project demonstrates not only our manufacturing capabilities but also our expertise in engineering design, project management, quality control, and international cooperation.
Each prefabricated substation was designed as a complete power distribution solution, integrating 24kV eco gas insulated switchgear, low-voltage switchgear, 800–1000kVA oil-immersed transformers, protection systems, monitoring equipment, and auxiliary electrical components into a compact containerized structure.
Designed specifically for photovoltaic applications in demanding mining environments, these substations provide safe, reliable, and efficient power distribution while significantly reducing installation time and on-site construction costs.
Project Background
As Poland continues to accelerate its investment in renewable energy, photovoltaic power generation has become one of the country’s fastest-growing energy sectors. Large solar farms require electrical distribution systems capable of operating continuously under changing environmental conditions while maintaining high operational reliability.
For this mining photovoltaic project, the customer required a complete package of prefabricated substations capable of meeting strict European technical standards, ensuring long-term operational stability, and supporting future maintenance requirements.
After evaluating multiple suppliers, the customer selected Shenheng Power because of our extensive experience in manufacturing electrical distribution equipment for international markets and our ability to provide complete turnkey solutions from engineering design to final delivery.
This cooperation reflects the confidence that global customers place in our technical capabilities and our commitment to delivering high-quality electrical infrastructure for renewable energy projects.
Customer Requirements and Technical Challenges
Every international project begins with understanding the customer’s real operational needs rather than simply supplying electrical equipment.
For the Poland photovoltaic mining project, the customer presented several important technical requirements:
- Customized prefabricated substations designed specifically for photovoltaic applications
- Reliable operation under demanding outdoor environmental conditions
- Integration of 24kV eco gas insulated switchgearwith enhanced environmental performance
- High-efficiency 800kVA and 1000kVA oil-immersed distribution transformers
- Complete low-voltage distribution systems
- Compliance with IEC international standards
- CE certificationfor European market requirements
- Container certificationsuitable for international transportation and installation
- Compact structural design for simplified transportation and rapid field installation
- Long service life with reduced maintenance requirements
Meeting these requirements required close cooperation among engineering, manufacturing, procurement, quality assurance, and project management teams throughout every stage of the project.
From Customer Visit to Project Launch
Successful international cooperation is built on communication, transparency, and technical understanding.
Before production officially began, our customer visited Shenheng Power to gain a comprehensive understanding of our manufacturing capabilities, quality management system, and production facilities.
During the visit, both teams held detailed technical discussions covering:
- Project specifications
- Electrical system design
- Single-line diagrams
- Equipment configuration
- Protection schemes
- Layout optimization
- Manufacturing schedule
- Quality control procedures
- Factory Acceptance Test (FAT) arrangements
- International delivery planning
Following multiple rounds of technical review and engineering optimization, both parties finalized the project specifications and signed the cooperation agreement.
Once the production schedule was confirmed, our international sales team worked closely with mechanical engineers, electrical engineers, production supervisors, and quality control specialists to ensure every manufacturing stage was executed according to the customer’s technical requirements.
This collaborative workflow minimized project risks, improved production efficiency, and ensured that every prefabricated substation would meet the customer’s expectations before shipment.
Why the Customer Choose Shenheng Power？
For large photovoltaic projects, selecting the right manufacturing partner is just as important as selecting the equipment itself.
The Poland customer chose Shenheng Power because we provide far more than individual electrical products—we deliver complete, integrated power distribution solutions.
Our strengths include:
- Customized engineering solutions for photovoltaic power plants
- Complete prefabricated substation manufacturing
- Advanced production equipment and intelligent manufacturing processes
- Strict quality control throughout every production stage
- IEC-compliant medium- and low-voltage electrical equipment
- CE-certified solutions for European markets
- Container-certified prefabricated substations for international transportation
- Professional project management from design to delivery
- Comprehensive technical documentation
- Responsive installation guidance and after-sales technical support
At Shenheng Power, every project is approached with professionalism, responsibility, and a commitment to long-term cooperation. We believe that every successful project is not only a product delivery but also the beginning of a lasting partnership built on trust, quality, and continuous support.
Advanced Manufacturing Process: Precision Engineering Behind Every Prefabricated Substation
At Shenheng Power, manufacturing is far more than assembling electrical equipment. It is a carefully controlled engineering process where every component is produced, inspected, and integrated according to strict quality management procedures.
For the Poland photovoltaic mining project, all 16 prefabricated substations were manufactured under standardized production processes to ensure consistent quality, long-term reliability, and compliance with international standards.
From steel fabrication to the final electrical testing, every production stage was completed by experienced engineers and technicians using advanced manufacturing equipment and standardized operating procedures.
Our objective was simple: deliver electrical distribution systems capable of operating safely and reliably throughout decades of service in demanding photovoltaic applications.
High-Strength Steel Structure Manufacturing
The structural frame forms the foundation of every prefabricated substation.
Before electrical equipment can be installed, every steel component is manufactured with high dimensional accuracy to guarantee structural strength, transportation safety, and long-term outdoor durability.
Our production process begins with precision cutting, bending, drilling, and fabrication of structural steel components using modern processing equipment.
Each steel panel and structural member is manufactured according to engineering drawings, ensuring accurate dimensions and excellent assembly consistency.
Professional welding procedures are then applied to create a robust enclosure capable of withstanding transportation, lifting operations, installation, and long-term exposure to outdoor environmental conditions.
Throughout the fabrication process, dimensional inspections and visual quality checks are continuously performed to ensure that every structural component meets project specifications before entering the next manufacturing stage.
Automated Manufacturing for Consistent Quality
Modern electrical equipment demands modern manufacturing technologies.
To improve efficiency while maintaining consistent product quality, Shenheng Power integrates automated production systems into multiple manufacturing processes.
Automated fabrication equipment helps minimize dimensional deviations, improve production efficiency, and maintain repeatable manufacturing accuracy across all sixteen prefabricated substations.
By combining intelligent manufacturing technologies with experienced technicians, we achieve both production efficiency and craftsmanship.
Automation supports consistency, while professional expertise ensures every product receives detailed inspection and quality verification.
Precision Welding for Structural Reliability
Welding quality directly affects the safety and service life of every prefabricated substation.
For this Poland project, all structural welding operations were performed according to standardized welding procedures by qualified technicians.
Each welded joint was carefully controlled to achieve excellent structural integrity, mechanical strength, and corrosion resistance.
After welding, every enclosure underwent surface inspection and dimensional verification before moving to subsequent manufacturing processes.
This strict approach ensures that every containerized substation maintains excellent mechanical stability throughout transportation, installation, and long-term operation.
CNC Machining for Exceptional Accuracy
Precision machining is essential for ensuring perfect equipment installation and structural compatibility.
Shenheng Power utilizes advanced CNC machining centers to manufacture mechanical components with outstanding dimensional accuracy.
Every mounting plate, installation bracket, equipment support, and precision-machined component is produced according to engineering drawings and verified through multiple inspection procedures.
High-precision machining not only improves assembly efficiency but also guarantees that every electrical component fits perfectly inside the prefabricated substation.
This attention to detail significantly reduces installation errors while improving the overall reliability of the finished system.
Mechanical Component Manufacturing
Every prefabricated substation contains hundreds of mechanical components working together to support electrical equipment safely and efficiently.
Our manufacturing team carefully produces, inspects, and assembles each mechanical part according to standardized production procedures.
Before entering final assembly, every component undergoes dimensional inspection and quality verification to ensure complete compatibility with the overall system.
Only components that fully satisfy our quality requirements are approved for installation.
This disciplined manufacturing philosophy helps eliminate hidden quality risks while ensuring long-term operational stability.
Professional Equipment Assembly
Equipment assembly represents one of the most critical stages of the entire manufacturing process.
Our experienced technicians carefully install every major electrical component according to approved engineering drawings and technical documentation.
Each prefabricated substation integrates multiple systems into one compact electrical distribution solution, including:
- Medium-voltage switchgear
- Low-voltage switchgear
- Oil-immersed distribution transformer
- Protection and control systems
- Auxiliary electrical equipment
- Cable management systems
- Monitoring devices
Every installation position, fastening point, clearance distance, and equipment interface is carefully verified throughout the assembly process.
This systematic approach ensures excellent mechanical integration while simplifying future operation and maintenance.
Secondary Wiring: Every Connection Matters
Reliable electrical performance depends on precise wiring.
Our technicians perform secondary wiring according to detailed electrical schematics using standardized installation procedures and clearly identified wiring systems.
Each control cable, protection circuit, signal connection, and communication interface is carefully routed, securely fixed, and accurately labeled.
Upon completion, every circuit undergoes comprehensive continuity verification and functional inspection to eliminate wiring errors before electrical testing begins.
Well-organized wiring not only improves operational reliability but also greatly simplifies future troubleshooting and maintenance activities.
Manufacturing of Low-Voltage Switchgear
The low-voltage switchgear installed inside each prefabricated substation serves as the central power distribution and protection system for downstream electrical loads.
Every low-voltage panel is manufactured, assembled, and tested by skilled technicians under strict quality management procedures.
Each cabinet integrates high-quality electrical components, protection devices, busbar systems, measuring instruments, and intelligent monitoring equipment.
Before installation into the prefabricated substation, every low-voltage switchgear assembly undergoes mechanical inspection, electrical verification, and functional testing to ensure stable and reliable operation under real working conditions.
This comprehensive manufacturing process guarantees dependable power distribution while supporting efficient maintenance throughout the equipment’s service life.
24kV Eco Gas Insulated Switchgear for Sustainable Energy Projects
As environmental regulations continue to evolve worldwide, sustainable medium-voltage technologies have become increasingly important.
For this photovoltaic mining project, the customer selected 24kV eco gas insulated switchgear, providing a reliable and environmentally responsible solution for medium-voltage power distribution.
Designed for excellent insulation performance, compact dimensions, and high operational reliability, the eco gas switchgear offers outstanding electrical performance while supporting modern environmental objectives.
Its compact design allows more efficient utilization of internal substation space, making it particularly suitable for containerized prefabricated substations used in photovoltaic power plants.
The integration of environmentally friendly medium-voltage technology also reflects Shenheng Power’s commitment to supporting the global transition toward cleaner and more sustainable energy infrastructure.
800–1000kVA Oil-Immersed Distribution Transformers
At the heart of every prefabricated substation is the oil-immersed distribution transformer, responsible for delivering stable and efficient power conversion.
For the Poland project, each substation was equipped with high-performance 800kVA or 1000kVA oil-immersed transformers, carefully selected according to the project’s electrical load requirements.
Designed for high efficiency, low losses, and long service life, these transformers provide reliable performance under continuous photovoltaic operating conditions.
Every transformer undergoes rigorous factory testing before installation, including insulation resistance measurement, transformer ratio verification, winding resistance testing, and routine electrical performance tests in accordance with IEC standards.
By combining high-quality transformer manufacturing with advanced substation engineering, Shenheng Power delivers complete electrical distribution solutions capable of supporting renewable energy projects for decades.
Comprehensive Quality Assurance: Built for Long-Term Reliability
At Shenheng Power, quality is not limited to the final inspection—it is integrated into every stage of engineering, manufacturing, assembly, testing, and delivery.
For the Poland photovoltaic mining project, a comprehensive quality management system was implemented throughout the entire production cycle to ensure that every prefabricated substation achieved consistent performance and long-term operational reliability.
Every manufacturing procedure follows standardized operating instructions, while every key production process is documented and verified by our quality control engineers.
From incoming raw materials to finished electrical equipment, each product undergoes multiple inspection checkpoints before moving to the next manufacturing stage.
This systematic approach minimizes manufacturing risks, improves product consistency, and guarantees that every delivered solution meets both customer expectations and international technical standards.
IEC-Compliant Electrical Distribution Solutions
International renewable energy projects require equipment that complies with globally recognized technical standards.
The electrical equipment supplied for this Poland project was designed and manufactured in accordance with IEC International Standards, ensuring compatibility with international engineering practices and long-term operational safety.
Compliance with IEC standards provides customers with confidence in areas including:
- Electrical safety
- Equipment reliability
- Mechanical performance
- Insulation coordination
- Operational stability
- Routine testing procedures
- International engineering compatibility
By following internationally accepted standards throughout design and manufacturing, Shenheng Power delivers electrical distribution solutions that are suitable for photovoltaic plants, industrial facilities, mining operations, utilities, and infrastructure projects worldwide.
CE Certification for European Projects
As a project serving the European market, compliance with applicable European requirements was an essential part of the manufacturing process.
The electrical equipment supplied for this photovoltaic project complies with relevant CE certification requirements, providing additional assurance regarding product safety, quality, and conformity for installation within European markets.
For customers across Europe, CE compliance demonstrates our commitment to manufacturing products that satisfy internationally recognized technical and regulatory expectations.
Container Certification for Safe International Transportation
Transportation is a critical consideration for large prefabricated substations.
Each substation supplied for the Poland project was manufactured as a containerized solution and supported by the required container certification, ensuring structural integrity during lifting, transportation, and international shipment.
The structural design considered:
- Transportation safety
- Lifting strength
- Long-distance shipping
- Outdoor storage conditions
- Installation efficiency
This approach significantly reduces on-site construction work while shortening project installation schedules and lowering overall project costs.
Containerized substations also simplify logistics management, making them an increasingly popular solution for renewable energy projects around the world.
Factory Acceptance Testing (FAT): Verifying Every System Before Delivery
Before shipment, every prefabricated substation underwent comprehensive Factory Acceptance Testing (FAT).
Our testing engineers carefully verified the performance of every major electrical system to ensure that each unit was fully prepared for installation and commissioning.
Testing procedures included verification of:
- Medium-voltage switchgear operation
- Low-voltage switchgear functionality
- Protection systems
- Control circuits
- Secondary wiring
- Mechanical operation
- Electrical interlocking
- Equipment configuration
- Documentation consistency
Every inspection was carried out according to established quality procedures and technical specifications.
Only after successfully completing all required inspections and functional tests were the substations approved for shipment.
This rigorous testing philosophy significantly reduces commissioning risks and helps customers achieve faster project implementation after delivery.
Professional International Project Management
Delivering sixteen prefabricated substations for an overseas photovoltaic project requires more than manufacturing expertise.
It demands effective project coordination, accurate scheduling, efficient communication, and strong cooperation among multiple departments.
Throughout this project, Shenheng Power’s international project team maintained close communication with the customer while coordinating engineering, procurement, production, quality control, logistics, and documentation.
Regular production updates and technical communication ensured complete transparency throughout every project stage.
This collaborative management approach helped maintain production efficiency while ensuring that customer requirements were fully implemented.
Reliable Global Logistics
International delivery represents another critical stage in every overseas project.
Before shipment, every prefabricated substation underwent careful cleaning, final inspection, protective packaging, and transportation preparation.
Our logistics team coordinated documentation, shipping arrangements, loading procedures, and export requirements to ensure smooth international delivery.
Careful transportation planning helps protect valuable electrical equipment during long-distance shipment while reducing potential risks during international logistics.
For customers, this means receiving complete, well-protected equipment ready for efficient site installation.
On-Site Technical Support
Our responsibility does not end when the equipment leaves our factory.
For international projects, Shenheng Power provides continuous technical support to help customers achieve successful installation and commissioning.
Our experienced engineering team can provide assistance with:
- Installation guidance
- Equipment positioning
- Electrical commissioning support
- Technical documentation
- Operational consultation
- Maintenance recommendations
- Remote technical assistance
By maintaining close communication throughout project implementation, we help customers reduce installation challenges while improving commissioning efficiency.
Comprehensive After-Sales Service
Long-term customer satisfaction depends on dependable technical support.
Shenheng Power provides comprehensive after-sales services designed to support customers throughout the entire operating life of their electrical equipment.
Our after-sales services include:
- Technical consultation
- Spare parts support
- Remote troubleshooting
- Maintenance guidance
- Documentation assistance
- Product upgrades
- Engineering support
Our objective is to build lasting partnerships rather than simply complete equipment deliveries.
Many of our international customers continue working with us on multiple projects because they value not only our manufacturing capabilities but also our long-term commitment to technical support and customer success.
Supporting the Future of Renewable Energy
As renewable energy continues to expand worldwide, electrical distribution infrastructure plays an increasingly important role in ensuring reliable power transmission and safe grid integration.
Prefabricated substations have become one of the most efficient solutions for photovoltaic projects because they offer:
- Faster installation
- Reduced civil construction
- Compact design
- Lower maintenance requirements
- Improved safety
- Higher reliability
- Flexible transportation
- Simplified project management
Shenheng Power remains committed to supporting the global renewable energy industry by continuously improving our engineering capabilities, manufacturing technologies, and quality management systems.
Through innovation and continuous improvement, we aim to provide customers with smarter, safer, and more sustainable electrical distribution solutions.
Why Global Customers Choose Shenheng Power
Customers from Europe, South America, Southeast Asia, the Middle East, Africa, and many other regions choose Shenheng Power because we provide complete electrical distribution solutions backed by engineering expertise and international project experience.
Our core products include:
- Prefabricated Substations
- Compact Substations
- Containerized Substations
- Appareillage moyenne tension
- Ensemble d'appareillage de commutation basse tension
- 24kV Eco Gas Insulated Switchgear
- Ring Main Units (RMU)
- Oil-Immersed Distribution Transformers
- Dry-Type Transformers
- Pole-Mounted Circuit Breakers
- Power Distribution Automation Solutions
Every project is developed according to customer requirements, international standards, and practical engineering needs.
Whether supporting photovoltaic power plants, mining operations, industrial facilities, commercial infrastructure, or utility networks, we are committed to delivering dependable electrical solutions that create lasting value.
Partner with Shenheng Power
The successful completion of this 16-unit photovoltaic prefabricated substation project in Poland demonstrates our ability to manage complex international projects from concept to delivery.
It also reflects our commitment to engineering excellence, intelligent manufacturing, strict quality control, and long-term customer cooperation.
If you are planning a solar power plant, battery energy storage system (BESS), mining project, industrial facility, utility substation, or any other electrical distribution project, Shenheng Power is ready to become your trusted partner.
Our experienced engineering and international sales teams are prepared to provide customized solutions tailored to your technical requirements and project objectives.
Contact Shenheng Power today to discuss your next electrical distribution project and discover how our integrated solutions can help power a safer, more efficient, and more sustainable future.
Shenheng Power Equipment Co., Ltd.
