Launched in winter 2024, Cambridge-based Voltic is a maritime company founded to decarbonize shipping through US-built vessels. It serves cargo owners and freight forwarders with shipping services and technologies intended to reduce fuel use while preserving dependable service.
AmogyFounded in 2020 by four MIT PhD alumni, Amogy is known for turning ammonia into usable electricity for industries where conventional electrification is difficult. Its patented cracking technology has been proven in demanding settings, including a 2022 tractor demonstration and the retrofit of the NH3 Kraken, a 1957 tugboat that became the world’s first carbon-free ammonia-powered vessel. The company now operates ATHENA, a Houston testing and manufacturing facility opened in 2025 as it moves from demonstrations toward commercial deployment.BROOKLYN, NY
ZondusZondus is an inventor-led company focused on rethinking how standardized freight containers support the movement of goods. Its patented concept turns existing ISO shipping containers into mobile solar-powered energy units for the freight transportation system, with the aim of reducing reliance on fossil fuels.DREXEL HILL, PA
ESCO MaritimeFormed in 2025 from the acquisition of a long-established Ultra Maritime business, ESCO Maritime brings together naval-defense operations with roots reaching back to 1951. More than 510 professionals across four U.S. and U.K. locations support allied naval programs with systems designed for demanding maritime missions.YAPHANK, NY
VoltifyVoltify is building a complete energy system for freight rail, pairing battery-electric locomotives with charging and microgrid infrastructure. Its approach retrofits diesel locomotives during standard overhaul cycles and uses grid-independent energy networks along rail corridors, extending power to nearby industrial sites as well as trains.PHILADELPHIA, PA