A renewable energy hybrid energy system with 5 MW solar PV and 3.6 MWh battery energy storage system (BESS) along with an advanced energy management system to serve rural areas has come online in Mongolia with Asian Development Bank (ADB) support.
Located in Uliastai in Zavkhan province of Mongolia, the project is designed to generate about 8.8 million kWh solar energy, along with providing 1.3 million kWh charged and discharged energy in the Altai-Uliastai energy system.
The BESS system used is a NAS battery that uses sodium-sulfur battery technology to enable it operate for longer period than 15 years that other BESS technologies run for, explained the bank adding that it has better fire safety and is more robust against Mongolia's harsh winters.
Clean electricity generated will be supplied to more than 48,000 consumers of over 8,000 local households, thereby contributing to improved electrical supply and CO2 reduction.
"The Uliastai subproject builds the very first utility and mega-scale battery system in the country combined with grid-connected renewable energy. The system will provide secure power supply to the residents and reduce localized air pollution, which affects even isolated regions of Mongolia during winter months," said ADB Principal Energy Specialist for East Asia, Shannon Cowlin.
The project is supported by the bank under its Upscaling Renewable Energy Sector Program, co-financed with a $6 million grant from the Strategic Climate Fund and the Japan Fund for the Joint Crediting Mechanism (JFJCM).
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