AlumaPower Corporation

AlumaPower runs a generator on scrap aluminum. Its aluminum-air battery uses a rotating anode instead of a fixed plate, which suppresses the parasitic hydrogen reaction that forces conventional designs to use expensive virgin metal, and lets it burn scrap instead. Fuel discs swap like CDs, so refueling takes seconds rather than a charging window.

Electrification keeps colliding with the same wall: some work needs the energy density of liquid fuel and the grid can't reach it, so diesel stays. Aluminum carries remarkable energy per kilogram, it is already refined, and as scrap it is waste with an existing collection system wrapped around it. Aluminum-air has been understood for decades and stalled on the anode and the cost of the metal. Answering both with one mechanical change is the kind of unlock that makes an old idea suddenly load-bearing.