SolarBridge Unveils 135-kW Golden Gate PCS for Commercial Storage

• SolarBridge Technology unveiled the Golden Gate STC-P135, a 135-kW bidirectional power conversion system for commercial and industrial batteries.
• The Dallas company pitches U.S. assembly and a planned non-FEOC certification to help projects keep the federal Investment Tax Credit.
• Local production starts in Q1 2027; sample units go to storage companies for testing in December.

SolarBridge Technology Inc. unveiled the Golden Gate STC-P135, a 135-kW bidirectional power conversion system for commercial and industrial (C&I) batteries, the U.S.-based company said on Nov. 10. It plans volume production at a new Dallas plant in early 2027.

The three-level, transformerless unit is in effect a large battery inverter. It accepts battery voltages of 720 to 1,500 V, connects at 480 Vac and runs grid-tied or off-grid. SolarBridge lists 98.7% maximum efficiency and full output up to 45°C on its product page. Units combine into systems of up to about 1 MW, and a failed one can be swapped while the rest keep running. No price was disclosed.

Sourcing is the pitch. Battery storage projects using equipment from a foreign entity of concern (FEOC) can lose the federal Investment Tax Credit, SolarBridge said. It plans to have its non-FEOC status certified by an independent law firm by early 2027 and is pursuing FCC authorization for Golden Gate.

The product in numbers

• 135 kW rated AC power and 148.5 kVA maximum apparent power per unit.
• 85 kg per unit, or about 1.59 kW of rated power per kilogram (list.solar calculation).
• 8 units are needed for a 1-MW system, giving 1,080 kW (list.solar calculation).
• 1,000 to 1,500 units a month at full output in Dallas, equal to 135 to 202.5 MW of PCS capacity (list.solar calculation).
• 48 MW of community, commercial and industrial storage was installed in the U.S. in Q2 2026, per the U.S. Energy Storage Monitor by ACP and Wood Mackenzie.
• About 356 Golden Gate units would match that quarter's 48 MW (list.solar calculation).

The unit runs with SolarBridge's own energy management system or third-party software. Integrators and EPC firms buy it and package it with batteries for building owners.

"Meeting FEOC and FCC requirements isn't a box we check at the end. It's the reason SolarBridge exists," CEO Kemp Qiu said in a statement.

Founded in 2025 as a Delaware corporation, SolarBridge revived the name of a University of Illinois microinverter startup. Its website lists R&D centers in the U.S. and Asia but names no investors.

Golden Gate debuts at RE+ 2026 in Las Vegas on Nov. 17-19. Several national storage companies will start testing sample units in December. Dallas production begins in Q1 2027, with about 50 jobs in the first phase. A liquid-cooled 450-kW string PCS, the STU-P450, is scheduled for Q2 2027.