power-transmission
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MacLean-Fogg
MacLean-Fogg is a fourth-generation, family-owned American manufacturer founded in 1925 that grew from a single railroad lock nut into a global maker of fasteners, engineered components, plastics, and additive-manufacturing tooling. Headquartered in Mundelein, Illinois, the roughly $1.2 billion-a-year enterprise supplies the automotive, heavy-truck, electric utility, telecom, and industrial markets from dozens of plants across North America, Europe, and Asia. In 2025 it marked its 100th anniversary still owned and led by the MacLean family.
VEIR
VEIR is a Woburn, Massachusetts company commercializing high-temperature superconducting power lines that move 5 to 10 times more electricity than conventional cables at the same voltage and footprint. Its key breakthrough is a passive, evaporative liquid-nitrogen cooling system that keeps superconductors cold without heavy machinery. Founded in 2019 out of Breakthrough Energy Ventures research, VEIR targets utilities, renewable developers, and increasingly the power-hungry AI data center market. It closed a $75M Series B in January 2025 led by Munich Re Ventures, with backing from Microsoft's Climate Innovation Fund.