Greensmith Energy Management Systems

About Greensmith Energy Management Systems

Founded in 2008 by John Jung, Greensmith Energy Management Systems carved a substantial niche in the energy storage and analytics sector before its acquisition by Wärtsilä in 2017 for $170 million. The company was established to make energy storage a fundamental component of a cleaner and more intelligent energy infrastructure. As CEO, John Jung led the company through significant growth, raising $34.3 million in funding over six rounds and deploying a significant portion of the United States' total energy storage capacity.

Greensmith specializes in energy storage software and integration services. The company's core business revolves around its proprietary software platform, GEMS (Greensmith Energy Management System), which is designed to monitor, control, and optimize energy assets. This platform serves a diverse client base, including utilities, independent power producers (IPPs), and commercial and industrial facilities. By providing a hardware-agnostic software solution, Greensmith enables these clients to manage and integrate a wide variety of energy resources, such as solar, wind, hydro, thermal, and battery storage systems, from different manufacturers.

The GEMS platform is the centerpiece of Greensmith's offerings. It functions as an advanced control system that allows for the management of single energy storage systems or entire fleets. Key features include the ability to layer multiple revenue-generating applications (revenue-stacking), battery optimization algorithms to extend system life, and fleet management tools. The software can process over 100,000 data points per second, using data analytics and machine learning to optimize the entire grid system, often integrating weather and load forecast data. A key selling point is its ability to be lab-tested in a virtual environment, reducing on-site testing time and costs. Complementing the software, the company also developed GridSolv, a standardized, modular hardware solution housed in an ISO container that includes batteries, power distribution, and safety systems, designed for rapid deployment.

The company's business model centers on providing these software and integration services, enabling clients to maximize their return on investment by improving performance and extending the longevity of their energy storage assets. After its acquisition, Greensmith became a business unit within Wärtsilä Energy Solutions, continuing to provide its solutions while leveraging Wärtsilä's global footprint and EPC (Engineering, Procurement, and Construction) expertise to expand into new markets. This strategic move allowed Wärtsilä to position itself as a global energy systems integrator.