GWH vs WPRT Comparison

ESS Tech Inc is a long-duration energy storage company specializing in iron flow battery technology. It develops and manufactures long-duration energy storage systems based on iron flow battery technology. The company's batteries use earth-abundant materials, including iron, salt, and water, and are designed for high cycle life and recyclability. It operates as a single business operating segment, which includes all activities related to the design, engineering, and manufacturing of the company's long duration energy storage products. The company's revenue is derived from the sale of its energy storage products and from service contracts.

Westport Fuel Systems Inc is an organization engaged in the engineering, manufacturing, and supply of alternative fuel systems and components for transportation applications. It has three operating segments; the Original Equipment Manufacturers segment-design, manufacture, and sell alternative fuel systems, components and electronics, and related engineering services, to OEMs that serve light-duty, medium-duty, and heavy-duty customers, the Independent Aftermarket segment includes IAM products, conversion kits, and components allow for the conversion of vehicles after being sold to the end-user through a network of dealers and installers, and Corporate includes public company activities, corporate oversight, financing and capital allocation.