ATESS proudly introduces the PCS250S/350S, a groundbreaking bidirectional battery inverter series (250kW and 350kW) designed to redefine energy storage solutions for large-scale applications. Engineered with advanced features like built-in STS, seamless grid switching, and flexible scalability, these inverters deliver unmatched performance for scenarios such as microgrids, peak shaving, backup power. Discover how the PCS250S/350S transforms energy management with its innovative selling points.
The PCS250S/350S features a built-in Static Transfer Switch (STS), eliminating the need for an external bypass cabinet. This two-in-one design streamlines grid-to-off-grid transitions, reducing installation costs and saving valuable space in containerized solutions. With no additional hardware required, you get a cost-effective, compact solution without compromising reliability.
Experience uninterrupted power with ≤10ms seamless on/off-grid switching. Whether facing grid outages or transitioning to off-grid mode, the PCS250S/350S ensures continuous load supply, making it ideal for critical applications like backup power and microgrids. This rapid transfer capability guarantees high system stability, even under heavy inductive loads, with no restarting issues.
The PCS250S/350S offers flexible configuration to meet varied energy needs. Operate it standalone or pair it with solar charge controllers, rectifiers, or the SMC200 for a 350kW single-HPS system. Whether for AC-coupled grid support or DC-coupled off-grid setups, this inverter adapts to applications like peak shaving, frequency regulation, and self-consumption, optimizing renewable energy use in any scenario.
Monitor and manage your energy system with ease using the touchscreen LCD. This user-friendly interface provides real-time insights and control, simplifying system operation and maintenance. The PCS250S/350S empowers users with a clear, intuitive experience, enhancing efficiency for both on-site and remote management.
Maximize system integration with remote DG control via dry contact output. The PCS250S/350S seamlessly coordinates with diesel generators, ensuring smooth operation in hybrid systems. This feature enhances energy management flexibility, particularly in off-grid or backup power scenarios, reducing reliance on fossil fuels.
The PCS250S/350S supports programmable working modes, allowing customization for specific needs such as peak shaving, backup power, or microgrid operation. This adaptability ensures optimal performance across diverse use cases, from large-scale grid support to remote off-grid communities, delivering energy solutions that align with your goals.
Scale your energy system effortlessly with parallel operation of up to 8 units for both on- and off-grid applications. The PCS350S can support 8 units in off-grid parallel mode, achieving a powerful 2.8 MW BESS. This scalability makes the PCS250S/350S perfect for projects of any size, from small microgrids to expansive industrial applications.
- High Efficiency: Up to 97.5% efficiency with a 600-900V battery voltage range for superior energy utilization.
- Robust Design: CE-certified, IP20-rated, and equipped with Type II lightning protection for reliable operation in harsh environments (-25°C to +55°C).
- Versatile Coupling: Supports AC and DC coupling for grid-connected and off-grid applications, enhancing renewable integration.
- Compact Footprint: Dimensions of 1400/1900/850mm and weights of 1460kg (PCS250S) and 1524kg (PCS350S) optimize space in container solutions.
The ATESS PCS250S/350S is now available for order. Contact our sales team at or visit to learn more and request a quote.Power your future with the PCS250S/350S—where innovation, reliability, and efficiency converge to deliver world-class energy storage solutions.
