From Grid to Home: The Evolution of Integrated Energy Systems

As renewable energy accelerates grid integration, driving decarbonization while introducing challenges such as declining short-circuit ratios, reduced system inertia, and voltage and frequency fluctuations, traditional power compensation methods prove inadequate.

Facing the complex and dynamic power system environment, Sieyuan leads its multiple subsidiaries to create an integrated energy solution covering "generation, transmission, distribution, and consumption": from large-scale substations and grid-connection equipment ensuring stable power transmission, to Swatten intelligent energy storage systems stabilizing power quality at the user side of the grid. With 32 years of power engineering expertise, we have achieved seamless connectivity from the grid to the home.

Upstream Assurance: How Sieyuan Supports Power System Stability

Distributed synchronous condensers have played a key role in enhancing short-circuit ratios and improving voltage support in renewable power plants. However, their long production cycles and high costs limit scalability. Grid-forming SVG products, paired with large-capacity DC capacitors, offer short-term overload capacity exceeding 3 times rated power, "zero-delay" active voltage support, and configurable low-frequency and sub-synchronous oscillation suppression functions.

As renewable energy grows, grid-forming SVG alone cannot meet all requirements. The market now demands solutions that support both active/reactive power, as well as virtual inertia, driving the development of SSC.

Core technological breakthrough: China's first world-leading SSC solution

We have pioneered a domestic-first technical approach featuring "dual-star MMC with centralized ultra-capacitor cluster management." This technology provides rapid active and reactive power support and regulation capabilities, incorporates advanced grid-forming technology, achieves high multiple overload capacity, and provides virtual inertia. It can simultaneously enhance system voltage and frequency stability, effectively improve short-circuit ratios in weak grid areas, and ensure safe and stable operation of new power systems.

With these capabilities, SSC not only meets but often exceeds the performance of traditional synchronous condensers, providing more efficient and scalable solutions for renewable energy hubs, collector stations, and areas with weak grid infrastructure.

Grid-forming energy storage: providing flexible regulation and black-start capabilities

Featuring pioneering "AC/DC integration" and unique "horizontal clustering" cabin structural design, our systems provide high & low-frequency ride-through capability, autonomous damping suppression, and black-start functionality. They fully meet the demands of electricity ancillary services markets and new power system development.

End-point Support: Swatten Products Safeguarding Home and Small Commercial Energy Use

Electricity undergoes a complex journey through generation, transmission, substation transformation, and distribution before reaching its final destination, connecting to countless households. As a crucial bridge in this process, Swatten not only delivers grid power to end-users in a stable, efficient, and secure manner but also alleviates grid burden through intelligent energy storage systems, helping users harness renewable energy and achieve energy self-sufficiency through efficient management.

Swatten products cover multiple capacity configurations (3kW-1.5MW), explicitly designed for diverse residential and small commercial scenarios. Swatten systems employ advanced battery technology and intelligent management, following 7 core design principles to ensure high safety, long lifespan, and high efficiency. The hybrid system supports dynamic pricing and can deliver up to 280% peak power output within 10 seconds to meet sudden high-demand requirements.

These advantages translate into reliable, easy-to-install, low-maintenance solutions that help users achieve worry-free, economical, and flexible energy management—the ideal choice for addressing frequent power outages and electricity price fluctuations.

One Vision: Complete Energy Solutions

Throughout the entire power chain, Sieyuan focuses on grid-side stability support, while Swatten is dedicated to user-side intelligent energy storage and power management. From ensuring the primary grid operates to protecting the daily energy needs of homes and small businesses, we play different roles in jointly building a safer, more efficient energy system.

The technological DNA that Swatten carries stems from Sieyuan’s deep 32-year power engineering lineage, truly bringing "grid-level technology" into thousands of households. From thousand-mile high-voltage transmission to daily electricity use, we provide not just equipment, but a comprehensive future-oriented energy solution.

In the wave of global energy transformation, we firmly believe: Smarter Power, Better Life. 

Learn more: www.swatten.com