PV-BESS-DG Hybrid Microgrid Solution for Reliable Power Supply in Nigerian Mining Operations

Project Overview

Mining operations in remote areas often face challenges caused by unstable grid infrastructure, including unexpected power interruptions, production risks, and increasing reliance on diesel generation.

To enhance energy reliability and optimize operating costs, Comking Electric provided an integrated PV-BESS-DG Hybrid Microgrid Solution for a mining site in Nasarawa State, Nigeria.

By combining renewable energy generation, battery energy storage, backup power generation, and intelligent energy management technology, the solution enables a more flexible and resilient power supply for industrial operations.

► Energy Challenges

Before the implementation of the hybrid microgrid system, the mining site faced several energy-related challenges:

• Unstable grid power with frequent interruptions.
• Potential production losses caused by unexpected outages.
• High operational costs due to heavy dependence on diesel generation.
• Limited flexibility in managing multiple energy sources.

► Comking’s Integrated Solution

Comking Electric deployed a comprehensive hybrid energy system integrating:

• 1.5MW Solar PV System.
• 1.5MW Battery Energy Storage System (BESS).
• 8MW Diesel Generation System (4 × 2MW DG Sets, including one standby unit).
• Intelligent Energy Management System (EMS).

The integrated solution enables coordinated operation among renewable generation, energy storage, and conventional power sources, improving energy utilization and enhancing power supply reliability for mining operations.

► Intelligent Energy Management and Operation

The hybrid microgrid operates through an intelligent EMS-based control strategy:

• During normal operation, solar energy contributes to onsite electricity consumption while the battery system maintains backup readiness.
• During grid interruptions, the BESS enables rapid transition to critical loads within 20ms, helping maintain continuous operation of essential equipment.
• When battery capacity reaches a predefined level, the EMS automatically starts diesel generators and optimizes power generation efficiency.
• After grid power is restored, the system smoothly returns to normal operating mode.

►​​​​​​​ Project Benefits

The PV-BESS-DG hybrid microgrid solution delivers multiple benefits for the mining operation:

• Enhanced power reliability for continuous industrial operations.
• Reduced dependence on diesel generation.
• Improved integration of renewable energy resources.
• Optimized energy management and operational efficiency.
• Reduced exposure to rising energy costs.

►​​​​​​​ Advancing Sustainable Industrial Energy Solutions

Through advanced renewable energy integration and intelligent microgrid technologies, Comking Electric supports industrial customers in overcoming power supply challenges and building more reliable, efficient, and sustainable energy systems.

With expertise in power distribution, energy storage, and renewable energy solutions, Comking continues to deliver customized energy solutions for global industrial applications.