Vietnam
Steel Factory
Project Overview
The steel industry is highly energy-intensive, with continuous power consumption and enormous electricity expenditure that directly increase overall manufacturing OPEX. To reduce grid power reliance, improve on-site energy efficiency, and maximize solar power utilization, a large-scale steel factory in Vietnam launched a rooftop photovoltaic project. Adopting a zero-export operation mode and an intelligent monitoring system, the factory achieves self-sufficient clean power and realizes sustainable low-carbon manufacturing.
Core Challenges
Massive power consumption leading to high electricity operational costs
Difficulty in rationally distributing solar power for heavy industrial loads
Risk of surplus PV power feeding back to the public grid
Complex grid access requirements for high-power rooftop photovoltaic systems
Customized Rooftop PV Solution
Tailored for heavy-load industrial scenarios, this rooftop solar project deploys a 1,165kWp distributed PV system and is configured with 14 units of high-efficiency GT3-125K grid-tied inverters. The inverters are grouped and connected to two independent transformers to balance power output and optimize overall energy efficiency.
The entire system operates under zero-export mode to restrict reverse power feeding to the utility grid. Equipped with an intelligent real-time monitoring platform, the solution dynamically adjusts PV output based on the factory’s real-time load demand, maintaining stable system performance and achieving an ultra-high on-site self-consumption rate.
Project Configuration
| Parameter | Specification |
|---|---|
| System Capacity | 1,165kWp PV + 1,750kW inverter |
| Core Product | GT3-125K grid-tied inverter |
| Device List | 14 × GT3-125K (125kW each) |
| Operation Mode | Zero-export on-grid mode |
| Core Functions | High self-consumption, intelligent energy monitoring, load optimization |
Key Benefits
Zero-Export Control – Prevent surplus solar power from flowing back to the grid, ensuring compliance with local grid regulations
High Self-Consumption – Absorb rooftop photovoltaic power locally to reduce grid electricity purchases
Optimized Energy Distribution – Dual-transformer design ensures balanced and efficient power output
Cost Savings – Significantly reduce peak-time electricity bills and lower long-term production costs
Green Upgrade – Help the steel factory reduce its carbon footprint and realize green industrial transformation