Project Background

A steel processing factory, located on aremote hillside, was entirely reliant on an inefficient diesel generator,resulting in high recurring fuel costs (30L daily) and significant operationaldrawbacks. The project was critical for establishing a reliable, sustainable,and cost-effective off-grid power supply to support their heavy industrialoperations and achieve energy independence.

Client Demands

  • Replace Diesel Generator: Eliminatereliance on the old generator to drastically reduce fuel costs and labor.
  • Reliable Power Supply: Establish astable, off-grid power source to support heavy factory production loads.
  • Energy Cost Reduction: Leverage solarresources to minimize overall energy expenditure.

CESC Solution

  • PV-Storage-Diesel Hybrid: Designed a pureoff-grid solution using two Mercury 233 units to create a coordinated energysystem.
  • Integrated PCS Control: Implemented EMSlogic to directly control the PV inverter’s start/stop and power limiting viacommunication protocol integration.
  • Intelligent Load Support: Strategyensures PV powers the daytime load and charges the ESS, with stored energycovering night/cloudy periods. The diesel generator serves as a manual backup.

Key achievements

  • Energy Independence: Successfullytransitioned the factory from a singular, expensive power source to a stable,PV-based off-grid solution.
  • Full System Visibility: Multi-metersetup provides high-integration, unified monitoring of load, PV, and storagereal-time data.
  • Proven Reliability: Thesystem demonstrated stable off-grid load-bearing capability during a four-daycontinuous testing phase.
  • Deep Customization: Deliveredstrong software development and PCS parameter tuning to accommodate thespecific factory load characteristics.

Solution Expansion & Upgrade Applications

  • Strategy Optimization: Continuedmonitoring and optimization of the system strategy to maximize performance andefficiency.
  • Modular Design: The system is inherentlyscalable and supports future expansion of both PV and storage capacity.