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DOE awarding $33M for carbon-neutral hybrid electric aviation

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Zero-carbon Ammonia-Powered Turboelectric (ZAPTurbo) Propulsion System; $2,652,778. The Zero-carbon Ammonia-Powered Turboelectric (ZAPTurbo) Propulsion System is a very high efficiency and light weight turboelectric system that uses green ammonia as both a fuel and a coolant via regenerative cooling.

Carbon 218
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ARPA-E to award $22M to 18 projects to accelerate production of macroalgae for energy and other uses; MARINER

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Working along the Texas/Louisiana coastline, the team will use satellite technology and computational modeling to seed, monitor, and harvest Sargassum biomass over a three-month cultivation cycle. The floating cultivation system, called NOMAD, does not require capital for anchors or moorings and will operate without direct human intervention.

Mariner 150