Brazil Mauriti Solar PV Project

1. Project Overview and Extreme Environmental Challenges

Located in Mauriti, Ceará State, Brazil, the Mauriti Solar PV Project stands as a landmark clean energy investment developed by PowerChina, marking its first large‑scale solar project in Latin America and one of the largest photovoltaic facilities in the region. With a total installed capacity of 425 MWp, equivalent to 343.77 MWac, the project consists of 9 independent photovoltaic subarrays, a 230 kV booster station, supporting electrical equipment, and a 14‑kilometer high‑voltage transmission line. After commencing construction in 2023, the project achieved full‑capacity grid connection in February 2025 and obtained official commercial operation certification in September 2025. It is designed to generate approximately 980 GWh of clean electricity annually, reducing carbon dioxide emissions by around 820,000 tons each year. During its construction phase, the project created more than 3,000 local jobs and made significant contributions to regional economic growth and energy transition. It has received multiple honors, including the 2025 PMI Outstanding Project Award and local municipal contribution awards, recognizing its excellence in engineering, management, and social impact.

The project is situated in a tropical semi‑arid climate zone, exposing all electrical equipment to severe and complex environmental conditions. Long periods of high temperatures cause ground surface temperatures to exceed 50°C in the dry season, while the rainy season brings extremely high humidity close to saturation. Strong ultraviolet radiation near the equator accelerates the aging and cracking of ordinary cable insulation materials, which may fail within just two to three years. In addition, the site faces risks such as rodent bites, mechanical impact during construction, and electromagnetic interference generated by inverters. These harsh conditions impose extremely high requirements on the weather resistance, high‑temperature stability, mechanical protection, flame retardancy, and signal stability of cables. To ensure long‑term safe and reliable operation, all cable products must comply with Brazilian electrical regulations and meet strict international certification standards, among which UL certification has become a key technical threshold for project procurement and acceptance.

2. GERITEL Full‑Solution Cable Supply with UL Certifications

To address the unique challenges of the Mauriti Solar PV Project, GERITEL provided a complete set of customized, high‑performance cable solutions covering DC power transmission, AC power distribution, and control signal communication. All products supplied feature clear technical specifications, comply with international standards, and hold authoritative UL certifications, ensuring full compatibility with the project’s design, construction, and long‑term operation requirements. The cable selection fully considers outdoor laying, high‑temperature resistance, UV resistance, moisture resistance, rodent prevention, and anti‑interference, forming a safe, stable, and efficient electrical transmission system.

2.1 Solar PV Cable

As the core carrier for DC power transmission in a photovoltaic system, the Solar PV Cable is widely used in connections between photovoltaic modules, string combiner boxes, and inverters. For the Mauriti project, GERITEL supplied 12AWG and 10AWG cross‑sectional cables with a rated DC voltage of 2kV, which are the most commonly used specifications in large‑scale utility‑scale PV plants. This cable is manufactured in full compliance with UL4703, the safety standard for photovoltaic wire and cable, and also meets IEC 62930 and EN 50618 requirements. It adopts a high‑grade cross‑linked polyethylene (XLPE) insulation layer and a double‑layer sheath structure, providing excellent UV resistance, ozone resistance, and weatherability. The cable supports a long‑term operating temperature of up to 90°C and maintains stable electrical performance under extreme temperature differences between day and night. With low‑smoke, halogen‑free, and flame‑retardant properties, it reduces fire risks in outdoor environments. Its flexible structure facilitates installation and laying across a vast site of more than 16 square kilometers, ensuring high efficiency and low loss during DC power transmission.

2.2 TC-ER Armored Power Cable

Used in the AC power transmission section from inverters to the main distribution room and 230 kV booster station, the TC-ER armored power cable serves as the main artery of the entire power station. GERITEL provided specifications including 4AWG, 2AWG, 1/0, and 4/0, with 3‑core and 4‑core structures to meet different power distribution needs. This cable is certified under UL 1277 for power and control cables, featuring an interlocked aluminum armor layer that provides excellent mechanical protection, effectively preventing damage from extrusion, impact, and rodent bites. Such a structure allows direct burial and cable tray installation without the need for additional protective conduits, greatly reducing construction difficulty and costs. The cable uses XLPE insulation with extremely low water absorption, delivering outstanding humidity resistance, heat resistance, and aging resistance. It maintains stable electrical performance even under long‑term high‑temperature and high‑humidity conditions, ensuring efficient and safe transmission of large‑capacity AC power. With high‑level flame‑retardant performance complying with VW‑1 standards, it effectively prevents the spread of fire and improves the overall safety of the power station.

3. Project Implementation Effects and Operational Performance

The comprehensive application of GERITEL’s UL‑certified cables has strongly supported the smooth construction and long‑term stable operation of the Mauriti Solar PV Project. During the construction phase, the armored structure, flexible design, and easy installation characteristics of the cables significantly improved construction efficiency, reduced on‑site damage and rework rates, and helped the project achieve scheduled grid connection. After being put into operation, all cables maintained excellent insulation performance, transmission stability, and environmental adaptability. The insulation resistance of the power cables far exceeded the design standard of 10 MΩ, reaching more than 200 MΩ. The control cables achieved zero communication errors and zero false alarms, ensuring the stability of the monitoring and control system.

After more than one year of commercial operation, the power station has maintained continuous and stable power output, fully meeting design expectations. The GERITEL cable system has withstood tests of high temperatures, strong UV radiation, high humidity, and seasonal weather changes, showing outstanding durability and reliability. All products comply with Brazilian import regulations and local electrical standards, enabling smooth project acceptance and long‑term operational security. The entire cable solution not only solves the engineering challenges posed by extreme environments but also reduces later operation and maintenance costs, creating significant economic and environmental benefits for the project.

4. Conclusion and Industry Reference Significance

The successful application of GERITEL cables in the Brazil Mauriti Solar PV Project fully demonstrates the company’s strong technical strength and comprehensive solution capacity in the field of new energy cables. By providing high‑quality products with complete specifications, stable performance, and authoritative UL certifications, GERITEL has helped one of Latin America’s largest solar power plants achieve safe, efficient, and long‑term stable operation. The project has become a benchmark model for cable selection and system design in large‑scale photovoltaic plants in tropical and subtropical regions worldwide.

In the future, GERITEL will continue to support the construction and development of global clean energy projects and promote the transformation of the world’s energy structure toward low carbon and sustainability.

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