Syndem LLC

Chicago, IL, United States

Energy StorageOtherPrivate company

Founded 201711-50 employees

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Profile last updated: August 15, 2026

About

Founded in 2017, Syndem LLC is a private company headquartered in Chicago, United States with approximately 11-50 employees specializing in Energy Storage, Other.

Syndem LLC is a Chicago-based company pioneering autonomous and resilient smart grid technologies based on Virtual Synchronous Machines (VSM) and synchronized-and-democratized (SYNDEM) grid architecture. Founded by Dr. Qing-Chang Zhong in 2017, the company develops and commercializes VSM technologies and products that enable power electronic converters to behave like conventional synchronous machines. Key offerings include grid-forming inverters with black-start capability, fault ride-through, virtual inertia, and cyber-physical grid security; and reconfigurable Smart Grid Research and Educational Kits for workforce development. The company's core innovation enables seamless integration of renewable energy sources, electric vehicles, energy storage, and flexible loads without reliance on communication networks, supporting the paradigm shift from centralized to distributed generation. Products sold to customers in over 10 countries.

Headquarters

Chicago, United States

Founded

2017

Employees

11-50

Company type

Private company

Focus areas

Virtual Synchronous MachinesVSMGrid-forming invertersSmart gridRenewable energy integrationPower electronicsMicrogridsEnergy storageBlack-start capabilityAutonomous power systems

Products & services

Business models

B2BEPC

Value chain

R&DManufacturingEngineeringConsultingAdvisory

Service areas (2)

Smart Grid Research and Education
Reconfigurable educational kits for research and workforce development in smart grids, microgrids, renewable energy integration, and power electronics.
Grid-Forming Virtual Synchronous Machine Technology
Development and deployment of VSM-enabled power electronic converters for autonomous grid stability, black-start capability, frequency and voltage regulation, and seamless renewable energy integration.

Locations

Headquarters

West 35th Street 10, 60616, Chicago, IL, United States

Operating locations (1)

Executive Dr. 604, Willowbrook, IL, United States

Service regions

United StatesUnited KingdomAustraliaFranceSaudi ArabiaIndiaBrazilItalyTurkeyChinaMultiple countries

Projects

Texas Tech 100% Converter-Based Microgrid

OperationalMicrogrid with energy storage

Reconfigurable microgrid testbed with 108 SYNDEM Smart Grid Research and Educational Kits forming a fully power-electronic-converter-based grid with 12 microgrids and a substation.

Lubbock, United States

20-Converter Field Test

OperationalGrid-forming VSM demonstration

Field demonstration of 20 grid-forming inverters equipped with Virtual Synchronous Machines technology operating autonomously with or without utility grid connection.

Lubbock, United StatesCompleted: 2020-02-01

Texas Home Grid

OperationalResidential solar and wind system

100% power-electronic-converter-based home powered by five SYNDEM smart inverters (four 3 kW solar, one 3 kW wind, one 3 kW energy bridge) capable of autonomous black-start, frequency and voltage regulation, and seamless grid integration.

United States

Zhangbei 140 MW VSM Demonstration

OperationalLarge-scale renewable energy integration with VSM

Utility-scale VSM demonstration by State Grid Corporation of China comprising 59 wind turbines totaling 118 MW, 24 photovoltaic inverters totaling 12 MW, and two 5 MW station-level VSM units. World's largest VSM demonstration demonstrating critical virtual inertia and fault ride-through capabilities.

140 MW capacityZhangbei, China