GWH vs EVTV 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.

Envirotech Vehicles Inc is a provider of purpose-built zero-emission electric vehicles focused on reducing the total cost of vehicle ownership and helping fleet operators unlock the benefits of green technology. It recognizes revenue from the sales of zero-emission electric vehicles and vehicle maintenance and inspection services. The Company serves commercial and last-mile fleets, school districts, public and private transportation service companies and colleges and universities to meet the increasing demand for light to heavy-duty electric vehicles.