Project Details

Application Scenario: Photovoltaic + Energy Storage

Installed Capacity:

• Phase 1: 4 MW / 8 MWh

• Phase 2: 1.725 MW / 3.44 MWh

Project Background

The mining site previously depended entirely on 18 diesel generators for power supply, resulting in extremely high energy costs—up to USD 0.44 per kWh. These costs were further driven by fuel price volatility, complex logistics, and ongoing labor requirements.

Although grid electricity was available at a much lower tariff (USD 0.14 per kWh), unstable grid supply limited its usability and posed operational risks to continuous mining activities.

Integrated Microgrid Solution

To address both cost and reliability challenges, the project implemented a smart hybrid microgrid system combining solar PV, battery energy storage, diesel generators, and grid access.

The system is configured to prioritize solar power during daytime operations, store surplus energy in batteries, and supply stable electricity at night or during unfavorable weather conditions. Diesel generators are retained as a backup resource, ensuring uninterrupted power under all scenarios.

Operational Performance

Since commissioning, the energy storage system has already delivered approximately 6 million kWh of electricity. Operating at an overall system efficiency of 88%, the project has generated significant economic and environmental benefits for the cement plant.

Project Value

• Total discharged energy: ~6 million kWh

• Estimated daily electricity cost savings: > USD 136.50

• Cumulative cost savings: > USD 4.1 million

• System efficiency: 88%

• Annual carbon emission reduction: ~3,240 tons

Project Impact

This project marks a key milestone in industrial energy management and decarbonization, demonstrating how integrated photovoltaic and energy storage solutions can reduce operating costs, enhance energy utilization, and support the transition toward greener cement production.