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Solar photovoltaic array and battery energy storage system powering a remote Qinghai Plateau township

Energy Storage System and Components

Off-Grid Microgrid Project in Qumahe Township, Qinghai Province

Sieyuan delivered a turnkey off-grid microgrid solution for Qumahe Township in Qinghai Province. The solution comprises a 1.6 MW photovoltaic system, a 6 MW/12 MWh grid-forming energy storage system, a 300 kW diesel generator system, and a 10 kV power distribution system. The system serves an area of approximately 1,480 mu and provides reliable electricity to local hospitals, schools, government institutions, and residential consumers.

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Grid-forming battery energy storage containers at a project site in southern Mongolia

Energy Storage System and Components

Sieyuan Grid-Forming BESS Strengthens Grid Stability in Mongolia

Sieyuan Electric supplied a 20 MW / 80 MWh grid-forming BESS for a remote area in southern Mongolia. Located at the end of a 180 km transmission line, the area had experienced frequent power interruptions. The system integrates black-start capability with PV-coordinated off-grid operation to support stable power supply during grid outages.

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Sieyuan PV-diesel-storage microgrid serving a metallurgical factory in Kolwezi

Energy Storage System and Components

Solar-Diesel-Storage Microgrid Solution for a Metallurgical Factory in Congo

Sieyuan Electric delivered a complete PV-diesel-energy storage microgrid solution for a metallurgical factory in Kolwezi City, Lualaba Province, Democratic Republic of Congo. The project integrated a 6.68 MW / 13.36 MWh grid-forming battery energy storage system (GFM-BESS) with 13 MWp of photovoltaic capacity and 36 MW of existing diesel generation to maximize renewable energy utilization. The solution significantly reduces diesel generator runtime and operating costs, improves power quality and supply reliability, and reduces the factory's overall energy costs.

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Sieyuan 49 MW/98 MWh containerised battery energy storage system installed in Romania

Energy Storage System and Components

Utility-Scale BESS Supporting Romania's Renewable Energy Transition

Sieyuan Electric successfully delivered a 49 MW/98 MWh battery energy storage system (BESS) in Romania within a tight five-month timeline, overcoming stringent EU grid compliance requirements and complex cross-border logistics. Featuring an all-in-one AC/DC integrated architecture, the system reduces land requirements and construction costs by 30%. Backed by intelligent manufacturing, modular product design, and end-to-end project management, Sieyuan ensured seamless execution from factory to site. The project demonstrates Sieyuan's capability to deliver turnkey energy storage solutions for the European market while supporting Romania's renewable energy transition through enhanced grid stability and reliability.

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