Mining sites are areas characterized by massive electricity consumption. Machinery operates continuously around the clock, large-scale lighting is required at night, and utilities must be powered for field personnel.
Mining companies typically source electricity from electrical substations and diesel generators. Substations draw power from the national grid (PLN) for operational needs, while generators serve as backup power when the grid connection is unavailable.
Having two distinct power sources offers flexibility in managing electricity usage but also presents challenges. Substations cut power immediately when anomalies occur, whereas diesel generators contribute to worker health issues as exhaust emissions mix with airborne mining particulates.
Solar power plants (PLTS) can eliminate harmful exhaust emissions while supporting the mining site's electrical system. By harnessing solar energy, they are well-suited to meet the high electricity demands of mining operations.
Why are mining sites suitable for solar power plants?
Solar power plants can accommodate the massive electricity needs of mining sites. High electricity consumption throughout the day drives up operational costs a significant issue even before factoring in transportation and logistics expenses.
Solar energy can significantly reduce operational costs and enhance energy supply reliability. Power outages can be disastrous for mining companies.
In 2016, the Australian state of South Australia experienced a 24-hour blackout. Among those affected was OZ Minerals, a copper mining company forced to halt operations.
Furthermore, mining sites often enjoy excellent solar exposure, making them ideal for solar installations. Open areas free from concrete structures or trees provide the perfect setting for off-grid solar power systems.
Types of solar power plants for mining sites
Hybrid solar power systems are well-suited for remote locations like mining sites. These systems can operate independently using batteries or rely on the central grid (PLN). Photovoltaic systems use solar panels to convert sunlight into electricity.
The generated electricity can be stored in batteries or used directly at specific points of consumption. Concentrated solar power (CSP) systems are also suitable for mining areas; they use mirrors to focus direct sunlight and generate heat.
While photovoltaic (PV) systems convert solar energy directly into electricity, CSP systems process high temperatures. The heat generated from this process can be used for smelting operations, thereby reducing reliance on natural gas.
Benefits of solar power plants in mining areas
Implementing solar power plants offers mining companies benefits ranging from reduced carbon emissions to cost savings.
1. Reducing carbon emissions
A company's carbon footprint can be reduced, contributing to climate change mitigation efforts.
2. Providing energy independence
Solar power plants reduce your company's total reliance on the main power grid and fossil fuels, sources subject to fluctuating costs.
3. Saving on operational costs
Installing solar power plants can lower operational costs by reducing fuel consumption. Research from the Bandung Institute of Technology (ITB) indicates that installing solar power plants in post-mining areas yields a Net Present Value (NPV) of IDR 715,183,020. Building a positive corporate image
Mining companies that utilize solar power demonstrate a commitment to generating environmentally friendly energy.
Regulations for solar power installation in mining areas
Solar power installations in mining areas are governed by the Regulation of the Minister of Energy and Mineral Resources (ESDM) No. 26 of 2018 regarding safety, environmental, and mining area management aspects.
Additionally, companies must secure electricity-related permits through the risk-based licensing system (Online Single Submission) and coordinate with the Ministry of ESDM and PLN (the state electricity company).
Regulation of the Minister of ESDM No. 2 of 2024 addresses solar power installations in mining areas, covering the removal of capacity limits, export-import schemes, capacity charges, and the Certificate of Operational Worthiness (SLO).
Stages of solar power installation in mining areas
Installing solar power plants involves several stages to ensure a smooth installation process within the mining area.
1. Installation planning
The first step of the installation process is planning, which involves gathering information on energy requirements, the solar power plant (PLTS) site location, and a design tailored to the mining site. This planning phase aims to ensure the resulting solar power system is both efficient and effective in meeting electricity needs.
The process begins with a site survey conducted by representatives from the solar power installation provider. The duration of the survey depends on the complexity of the site and its energy requirements.
2. Component selection
Solar PV components are carefully selected based on technical calculations. The selection process prioritizes not only functionality but also service life and durability in extreme environments, such as mining sites.
3. Component Installation
Once the components are selected, the next step is installation at the mining site. The installation location is determined based on technical engineering drawings.
This stage involves installing the solar PV components, including panels, inverters, batteries, cabling, and other supporting equipment.
4. Testing
Before the system is put into use by the mining company, the solar PV system must undergo testing to ensure all components are functioning correctly. Once verified, solar PV technicians configure the system to integrate the solar-generated electricity with the mining equipment's electrical infrastructure.
Contact Batari Energy for Solar PV Installation at Mining Sites
Batari Energy provides solar PV installation solutions to meet the electricity needs of mining companies. Contact us via this link if you are interested in installing a solar PV system at a mining site!