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