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Advent Technologies Holdings, Inc., an advanced materials and technology development company, operates in the fuel cell and hydrogen technology markets in North America, Europe, and Asia. It develops, manufactures, and assembles fuel cell systems and critical components that determine the performance of hydrogen fuel cells and other energy systems. The company offers high-temperature proton exchange membrane (HT-PEM) fuel cells, including membrane electrode assemblies, bipolar plates, and reformers, as well as provides fuel-cell stack assembly and testing services. It serves stationary power, portable power, automotive, aviation, energy storage, and sensor markets. The company is headquartered in Boston, Massachusetts.

Eos Energy Enterprises, Inc. designs, manufactures, and markets zinc-based energy storage solutions for utility-scale, microgrid, and commercial and industrial (C&I) applications in the United States. The company offers Znyth technology battery energy storage system (BESS), which provides the operating flexibility to manage increased grid complexity and price volatility. Its flagship product is Gen 2.3 battery module. In addition, the company offers Z3 battery module that provides utilities, independent power producers, renewables developers, and C&I customers with an alternative to lithium-ion and lead-acid monopolar batteries for critical 3- to 12-hour discharge duration applications; battery management system, which provides a remote asset monitoring capability and service to track the performance and health of BESS and identify future system performance issues through predictive analytics; and project management and commissioning services, as well as long-term maintenance plans. Eos Energy Enterprises, Inc. is headquartered in Edison, New Jersey.

Perma-Pipe International Holdings, Inc., together with its subsidiaries, engineers, designs, manufactures, and sells specialty piping and leak detection systems. It offers insulated and jacketed district heating and cooling piping systems for energy distribution from central energy plants to various locations; and primary and secondary containment piping systems for transporting chemicals, hazardous fluids, and petroleum products, as well as engages in the coating and insulation of oil and gas gathering and transmission pipelines. The company also offers liquid and powder based anti-corrosion coatings for external and internal surfaces of steel pipe, including shapes like bends, reducers, tees, and other spools/fittings that is used in pipelines for the transportation of oil and gas products and potable water. It has operations in the United States, Canada, the Middle East, Europe, India, and internationally. The company was formerly known as MFRI, Inc. and changed its name to Perma-Pipe International Holdings, Inc. in March 2017. Perma-Pipe International Holdings, Inc. was incorporated in 1993 and is headquartered in Spring, Texas.

Energous Corporation develops wireless charging applications. The company develops WattUp wireless power technology that consists of semiconductor chipsets, software controls, hardware designs, and antennas that enables radio frequency-based charging for electronic devices. Its products are used in building and home automation, electronic shelf labels, industrial IoT sensors, surface and implanted medical devices, tracking devices, hearables, wearables, consumer electronics, and public safety applications. Energous Corporation was formerly known as DvineWave Inc. and changed its name to Energous Corporation in January 2014. Energous Corporation was incorporated in 2012 and is headquartered in San Jose, California.