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Chile has the potential to run exclusively on renewable generation, with an estimated energy mix of 46% solar, 31% wind, 12% hydroelectric, and 8% flexible natural gas power plants, as well as 23% of battery storage capacity. The remaining 2% is split between biomass, geothermal, and other less common energy sources.
Currently, 36 of the 129 large-scale projects Latin America projects with an energy storage component under development are in Chile, including 32 out of 71 of the region’s early works projects. The storage technologies either in use or being considered include:
According to data from Acera, the Chilean Renewable Energy Association, there are only 64MW of battery storage capacity currently active, representing 0.2% of national capacity. AES Andes, a subsidiary of U.S. company AES Corp. operates all 64MW at their Angamos and Los Andes substations.
Chile’s goal to achieve 80% renewable grid by 2030 and a 100% zero emissions grid by 2050, will require an estimated 2,000 MW of energy storage every 10 years.
An energy storage system (ESS) for electricity generation uses electricity (or some other energy source, such as solar-thermal energy) to charge an energy storage system or device, which is discharged to supply (generate) electricity when needed at desired levels and quality. ESSs provide a variety of services to support electric power grids.
Depending on its design, a power supply unit may obtain energy from various types of energy sources, like electrical energy transmission systems, electromechanical systems such as generators and alternators, solar power converters, energy storage devices such as a battery and fuel cells, or other power supply.
Other types of ESSs that are in various stages of research, development, and commercialization include capacitors and super-conducting magnetic storage. Hydrogen, when produced by electrolysis and used to generate electricity, could be considered a form of energy storage for electricity generation.
Energy storage systems improve electricity stability by offering ancillary services like frequency control and voltage support. They can adapt fast to changes in grid conditions, such as unexpected increases or decreases in power supply or demand, assisting in keeping the frequency and voltage within acceptable operational limits.
Operation and maintenance plans for energy storage power plants cover all key aspects to ensure optimal performance and reliability. Here is a detailed description of its components: Use real-time monitoring systems to track the operating status, battery performance, and charge and discharge efficiency of the energy storage system.
In addition to these core functions, functions such as anti-backflow protection, support for parallel/off-grid operation, and islanding protection further enhance the reliability and versatility of energy storage power stations.
Battery storage power stations are usually composed of batteries, power conversion systems (inverters), control systems and monitoring equipment. There are a variety of battery types used, including lithium-ion, lead-acid, flow cell batteries, and others, depending on factors such as energy density, cycle life, and cost.
Battery storage power stations require complete functions to ensure efficient operation and management. First, they need strong data collection capabilities to collect important information such as voltage, current, temperature, SOC, etc.