EN
Cesar Solar Project
Project Overview
In Cesar Department, northern Colombia, a solar developer launched a utility-scale photovoltaic plant to address chronic power shortages caused by the region’s hydro-dominated grid—prone to seasonal imbalances and local bottlenecks. The client had no prior experience in solar-integrated distribution systems and required a turnkey solution that complied with Colombian technical regulations (e.g., RETIE), controlled capital expenditure, and withstood the area’s hot, humid, and mildly saline coastal environment.
Key project requirements included
Simple, reliable transformer solution for first-time solar project developers
Full compliance with IEC and Colombian local standards
Enhanced corrosion resistance and thermal management for tropical conditions
End-to-end support from design to commissioning and operator training
TSTY Electric’s Customized Solution
TSTY supplied two custom oil-immersed transformers (1500 kVA, 13.2/0.8 kV and 13.8/0.8 kV) with full copper windings, optimized for solar plant interconnection. Redundant components were eliminated to reduce cost and complexity, while core parts were selected from IEC-compliant, high-value brands approved for use in Colombia. The units featured enhanced anti-corrosion coatings, improved ventilation, and simplified internal layouts—all factory-tested before shipment. TSTY also provided comprehensive services: engineering support, logistics coordination, on-site installation guidance, technical training, and local after-sales liaison.
Core Technical Adaptations
Selected IEC-compliant, cost-effective components aligned with Colombian RETIE standards
Enhanced anti-corrosion treatment and passive cooling for heat, humidity, and salt exposure
Simplified internal design to reduce material use and manufacturing cost
Full-cycle support: from drawings and production to training and local service coordination
Equipment Scope Delivered
Equipment
Rating
Quantity
Key Features
Oil-Immersed Transformer
1500 kVA, 13.2/0.8 kV
1 unit
• Full copper windings
• Tropicalized enclosure
• IEC 60076 compliant
Oil-Immersed Transformer
1500 kVA, 13.8/0.8 kV
1 unit
• Same climate-resilient
design
• Optimized for solar plant
interface
*All units passed third-party type testing per regional requirements prior to shipment.
Engineered for Latin America, Validated Globally
When renewable projects meet inexperienced developers and challenging climates, success depends on simplicity, local relevance, and partnership—not just hardware.
Right-Sized for First-Time Solar Developers
By removing unnecessary features and providing clear documentation, TSTY enabled smooth adoption without over-engineering.
Built for Colombia’s Tropical Coast
Galvanized tanks, sealed gaskets, and airflow-optimized radiators ensure long-term performance despite year-round heat and humidity.
Cost Control Without Compromise
Strategic component selection and design simplification reduced CAPEX by ~18% while maintaining full compliance and reliability.
From Factory to Field—Fully Supported
With remote design review, bilingual technical training, and post-installation follow-up, TSTY empowered the client to operate independently—accelerating clean energy access in a grid-constrained region.
Malawi - Rural Electrification Project
Nigeria - Long-Term Distribution Partnership
Côte d’Ivoire - Mining Power Project
