Philippines Cagayan de Oro Ground-Mounted Solar Power Plant

In 2023, as the Philippines accelerated its transition to renewable energy, a large-scale ground-mounted solar power plant project was launched in Cagayan de Oro, Northern Mindanao. This project, designed to enhance local clean energy supply and reduce reliance on traditional fossil fuels, faced critical challenges in the selection and supply of electrical wires—core components that directly determine the safety, efficiency, and long-term stability of the entire solar power system. Dongguan GERITEL Electrical Co., Ltd., as a professional wire exporter with rich experience in international renewable energy projects, successfully provided customized solutions for this project, delivering high-performance solar cables and THHN wires that perfectly addressed the client’s pain points. This case details how we supported the smooth progress of the Cagayan de Oro solar project and created mutual value through our professional advantages.

1. Challenges Faced by the Cagayan de Oro Solar Power Plant

The Cagayan de Oro ground-mounted solar power plant is a key renewable energy project in the Philippines, covering an area of approximately 100 hectares with a designed installed capacity of 80MW. It is expected to provide clean electricity to more than 60,000 local households after completion, making a significant contribution to the country’s carbon neutrality goals. However, during the early stage of the project, the client encountered three major pain points in the procurement of wires, which threatened the project’s progress and operational safety.

First, the client struggled to find a reliable wire supplier with experience in large-scale solar power projects. Many suppliers they contacted only had experience in small-scale residential or commercial wiring, lacking professional understanding of the special requirements of solar power systems—such as resistance to harsh outdoor environments, high voltage stability, and long service life. This made it difficult for the client to ensure that the wires could adapt to the hot and humid climate in Cagayan de Oro, where temperatures often exceed 32°C and rainfall is frequent.

Second, the project had tight construction schedules, and the client required the wires to be delivered quickly to avoid delaying the installation of solar panels and inverters. Most local suppliers in the Philippines had limited production capacity and long lead times, while other international suppliers could not guarantee on-time delivery due to complex customs clearance and long shipping cycles. The client was worried that delayed wire delivery would lead to increased construction costs and missed project milestones.

Third, the client had strict requirements for wire quality and safety. As a large-scale public welfare and commercial integrated project, the solar power plant needed wires that meet international standards to ensure stable operation for more than 25 years. The client had previously considered using ordinary wires to reduce costs, but they soon realized that ordinary wires lack the UV resistance, high-temperature tolerance, and corrosion resistance required for outdoor solar projects, which would lead to frequent failures and high maintenance costs in the long run. They needed wires that could withstand the harsh outdoor environment while ensuring efficient power transmission.

After extensive market research and comparison, the client chose Dongguan GERITEL Electrical Co., Ltd. because of our rich experience in international solar power projects, strict quality control system, and efficient delivery capacity. They hoped that we could provide a one-stop solution for solar cables and THHN wires, solving their procurement troubles and ensuring the smooth progress of the project.

2. Tailored Solar Cables & THHN Wires for the Project

After in-depth communication with the client, our professional team fully understood the project’s design parameters, construction environment, and technical requirements. We tailored a complete wire solution, focusing on two core products: solar cables and THHN wires, and selected appropriate specifications and quantities based on the actual needs of the ground-mounted solar power plant.

For solar cables, which are responsible for transmitting DC power from solar panels to inverters, we recommended our high-performance single-core and double-core models that meet IEC 62930 and UL 4703 standards—key certifications for solar wires in the international market. The client purchased a total of 120,000 meters of solar cables, including 65,000 meters of 1x4mm² single-core solar cables, 35,000 meters of 1x6mm² single-core solar cables, 12,000 meters of 2x4mm² double-core solar cables, and 8,000 meters of 2x6mm² double-core solar cables. These specifications were carefully selected based on the project’s power transmission distance and current load: the 1x4mm² and 1x6mm² single-core cables are used for connecting individual solar panels in the same string, ensuring low power loss during short-distance transmission; the 2x4mm² and 2x6mm² double-core cables are used for connecting solar panel strings to汇流箱s, adapting to longer transmission distances and higher current requirements.

Compared with ordinary cables, our solar cables have obvious advantages. Ordinary cables use PVC insulation and jacket, which have poor UV resistance and can only withstand temperatures up to 70°C, making them prone to aging and cracking under long-term outdoor exposure in Cagayan de Oro. In contrast, our solar cables adopt irradiated cross-linked polyolefin insulation and jacket, which can withstand temperatures ranging from -40°C to 80°C, have strong UV resistance, and are corrosion-resistant to acid, alkali, and salt spray—perfectly adapting to the local hot and humid climate. In addition, the conductors of our solar cables are made of tinned copper, which effectively prevents oxidation and corrosion, ensuring stable power transmission for more than 25 years, consistent with the service life of the solar power plant itself.

For THHN wires, which are used for AC power transmission in the project’s distribution system (connecting inverters to transformers and distribution cabinets), we provided high-quality models that meet UL 83 and NEC standards. The client purchased 45,000 meters of THHN wires, including 10,000 meters of 100mm², 8,000 meters of 150mm², and 12,000 meters of 200mm². These specifications are matched according to the current load of different parts of the distribution system: the 100mm² and 150mm² THHN wires are used for branch circuits with smaller current, while the 200mm² wires are used for main circuits with larger current, ensuring safe and efficient AC power transmission.

The client chose our THHN wires because they are superior to ordinary building wires in terms of safety and durability. Ordinary building wires have a lower temperature rating (only 75°C in wet environments) and poor flame resistance, which poses potential safety hazards in large-scale power systems. Our THHN wires have a temperature rating of 90°C in dry environments and 75°C in wet environments, with excellent flame resistance and self-extinguishing performance, which can effectively prevent fire spread in case of short circuits. In addition, our THHN wires have good electrical insulation performance, reducing the risk of leakage and ensuring the safety of the project’s electrical system.

3. Strict Quality Control Backed by International Certifications

The client attached great importance to the safety and reliability of the wires, as any quality problem could lead to serious safety accidents and economic losses. To address this concern, we highlighted our strict quality control system and complete international certifications, providing the client with full confidence in our products.

All our solar cables and THHN wires have passed a series of international authoritative certifications, including UL 4703 (for solar cables), UL 83 (for THHN wires), IEC 62930, and ISO 9001 quality management system certification. These certifications prove that our products meet the highest international standards for safety, performance, and environmental protection, and can be used in large-scale renewable energy projects around the world. For example, the UL 4703 certification requires solar cables to pass strict tests such as UV resistance, low-temperature flexibility, flame resistance, and oil resistance, ensuring that they can withstand the harsh outdoor environment of solar power plants.

In addition, we have established a full-process quality control system from raw material procurement to product delivery. We select high-quality tinned copper conductors, irradiated cross-linked polyolefin insulation, and jacket materials from well-known suppliers to ensure the stability of product performance. During the production process, we conduct real-time inspections on wire diameter, insulation thickness, conductor resistance, and other key indicators, and conduct 100% testing on finished products to ensure that every roll of wire meets the design requirements. Before delivery, we also provide the client with detailed quality inspection reports, including test data on electrical performance, mechanical performance, and environmental resistance, so that the client can clearly understand the quality of the products.

4. Fast and Efficient to Ensure Project Progress

One of the client’s core pain points was the tight construction schedule, so fast delivery was crucial to the success of the cooperation. We made every effort to optimize the production and logistics process to ensure that the wires were delivered to the Cagayan de Oro project site on time, even ahead of the client’s expected schedule.

After confirming the order, we immediately arranged production, giving priority to the production of the project’s wires to shorten the production cycle. Our factory has advanced production equipment and a professional production team, which can produce 15,000 meters of solar cables and 5,000 meters of THHN wires per day, ensuring that the total order of 165,000 meters of wires was completed in just 12 days. After production, we quickly arranged for packaging and shipping, choosing a reliable international logistics company with rich experience in wire export to the Philippines. We also handled all customs clearance procedures in advance, including preparing export declarations, commodity inspection certificates, and certification documents, to avoid delays caused by customs issues.

The entire logistics process was closely tracked, and we updated the client on the shipping status every day. Finally, the wires arrived at the Cagayan de Oro project site fast, which was 5 days earlier than the client’s expected delivery time. This fast delivery speed effectively ensured the progress of the project’s wire laying and subsequent installation work, helping the client avoid potential construction delays and cost increases.

5. Stable Operation and Mutual Win-Win

With the support of our high-quality solar cables and THHN wires, the Cagayan de Oro ground-mounted solar power plant successfully completed the wire laying and electrical installation work, and entered the trial operation stage smoothly. After several months of operation, our wires have shown excellent performance, fully meeting the project’s requirements for power transmission efficiency and safety.

The solar cables have maintained stable power transmission under long-term outdoor exposure, with no signs of aging, cracking, or corrosion, even in the hot and humid climate of Cagayan de Oro. The THHN wires in the distribution system have also operated stably, with no leakage, short circuit, or other safety problems, ensuring the safe and efficient operation of the entire power system. The client’s engineering team stated that the quality of our wires exceeded their expectations, and the stable performance of the wires laid a solid foundation for the long-term and reliable operation of the solar power plant.

From an economic perspective, our wires also brought significant value to the client. The high efficiency of our solar cables reduced power loss during transmission, improving the overall power generation efficiency of the project; the long service life of the wires reduced the need for frequent maintenance and replacement, lowering the long-term operation and maintenance costs of the power plant. In addition, our fast delivery helped the client complete the project ahead of schedule, enabling the power plant to start generating electricity earlier and obtain economic benefits in advance.

6. Cooperation Value and Customer Feedback

This cooperation not only solved the client’s urgent procurement problems but also established a long-term and stable cooperative relationship between the two parties. The client highly recognized our professional capabilities, product quality, and service level, and stated that they would give priority to cooperating with Dongguan GERITEL Electrical Co., Ltd. in their future solar power projects in the Philippines.

The client summarized the value brought by our cooperation in three aspects: first, our rich experience in solar power projects enabled us to quickly understand their needs and provide customized solutions, avoiding the risks caused by inappropriate product selection; second, the high-quality wires ensured the safety and stability of the project, reducing the client’s worries about long-term operation; third, the fast delivery speed guaranteed the project progress, helping the client achieve their construction goals on time. The client also emphasized that the international certifications of our products played a key role in their decision-making, as these certifications proved the reliability of our products and enabled them to pass the project’s quality inspection smoothly.

7. Choose Dongguan GERITEL for Your Solar Wire Needs

If you are undertaking a solar power project in the Philippines or other countries, facing troubles in wire procurement—such as unclear product selection, tight delivery schedules, or concerns about quality and safety—Dongguan GERITEL Electrical Co., Ltd. is your best choice. We have rich experience in international renewable energy projects, providing high-quality solar cables, THHN wires, and other electrical products that meet international standards. Our products have passed multiple authoritative certifications, with excellent performance, fast delivery, and competitive prices, helping you solve all procurement pain points and ensure the smooth progress of your project.

No matter what size or type of solar power project you have, we can provide customized solutions according to your specific needs, recommending the most suitable wire specifications and quantities to help you reduce costs and improve efficiency. Contact us today to discuss your project needs and get a professional quotation and solution.

Dongguan GERITEL Electrical Co., Ltd.

Tel/WhatsApp/WeChat: +86 135 1078 4550 / +86 136 6257 9592

Email: manager01@greaterwire.com

We look forward to cooperating with you and helping your solar power project achieve success!