Built for Utility-Scale Energy Storage Solutions
The Solarbridge STTS Series delivers a fully integrated utility-scale power station, combining PCS, transformer, and medium-voltage switchgear into one pre-engineered solution. By minimizing on-site integration and coordination, the STTS Series streamlines installation, accelerates commissioning, and simplifies project deployment.
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Designed to meet the demands of large-scale energy storage, the series offers two power configurations: the STTS-5400 (5.4 MW) and STTS-7200 (7.2 MW). Both feature modular 450 kW power blocks, providing the scalability, reliability, and flexibility needed to support evolving grid-scale energy storage requirements.
99% Max PCS efficiency | 1,500 V Max DC voltage | IP54 Ingress protection
STTS Series Technical Specs
STTS-5400 and STTS-7200 turnkey stations bring power conversion, medium-voltage transformation and switchgear together in one containerized unit. Developers and EPCs get fewer interfaces to integrate on site, plus a platform that grows as the battery system grows.
KEY FEATURES
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Battery Clusters
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String PCS Modules
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AC Breakers & SPD
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MV Transformer
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MV Switchgear
built in USA
Key Benefits of the STTS Series Turnkey Station
Scales in 450 kW Blocks
Right-size your station from 5.4 MW to 7.2 MW. The modular architecture lets you match capacity to the project instead of overbuilding.
Fast, Simple Power-Module Replacement
Easy module swaps reduce repair time and keep your system generating revenue.
Higher Usable Battery Capacity
The string-based design helps you get more usable energy out of every battery cluster.
Add New Battery Clusters to Existing Systems
Expand over time without replacing what you’ve already installed.
Reduced SOC Imbalance Between Clusters
Better balance across battery clusters supports more consistent performance across the system.
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Deeper Depth of Discharge (DoD)
Use more of your stored energy while protecting long-term battery health.
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Built-In Sub-Array Management Unit (IEC 61850)
Integrated management with a standards-based protocol, ready to connect with utility-grade control systems.
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Simplified Periodic Battery Calibration
Routine calibration takes less effort, which reduces maintenance time and operating cost.
FEOC Compliant
Compliant products and supply chain
Built in USA
PCS & inverters manufactured in Dallas, TX
FCC Compliant
Ready for U.S. marketing deployment
What is a C&I PCS Module
A C&I PCS module is the bidirectional power converter that links a battery storage system to a commercial or industrial electrical system. It converts DC from the batteries into AC to serve facility loads or the grid, and converts AC back to DC to charge the batteries. The GT3 Golden Gate delivers 135 kW per module in both on-grid and off-grid modes.
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The GT3 fits the three most common C&I storage applications: peak shaving to cut demand charges, backup power that keeps critical loads running through an outage, and solar-plus-storage systems that shift on-site generation to when it is needed. Its wide DC input range lets it pair with a broad set of battery systems.
Why Choose SolarBridge's Turnkey Station
One Station, Every Critical Component
PCS, oil-immersed MV transformer, MV switchgear and AC surge protection arrive together in a single container. Fewer pieces to coordinate means a simpler, faster path to a grid-ready site.
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Lower Maintenance, Less Downtime
Easy power-module replacement shortens repairs, and simplified periodic battery calibration reduces routine service effort.
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Built for Demanding Sites
Liquid cooling, IP54 protection, operation from -40°C to +60°C (derating above 45°C) and altitudes up to 4,000 m (derating above 2,000 m).
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Grid-Ready, On-Grid and Off-Grid
Current THD under 3% at rated power, adjustable power factor from -1 to +1, and off-grid operation with 100% unbalanced load capacity.
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A Partner Based in the USA
SolarBridge Technology is headquartered in Dallas, Texas, with direct access to a team that understands commercial, industrial and utility-scale projects.
Frequently Asked Questions
What is the difference between the STTS-5400 and the STTS-7200?
Both use the same platform. The STTS-5400 has 12 DC inputs for 5.4 MW, and the STTS-7200 has 16 DC inputs for 7.2 MW.
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Does the station include a transformer?
Yes. An oil-immersed MV transformer and MV switchgear are integrated into the station.
Can I expand my system later?
Yes. You can add new battery clusters to existing systems, and the power stage scales in 450 kW blocks.
What communication protocols are supported?
The sub-array management unit supports IEC 61850. Hardware communication ports are RS485, CAN, and Ethernet.
Can it operate off-grid?
Yes. The STTS Series supports off-grid operation with low voltage distortion and full unbalanced load capacity.