Heron Power builds first solid-state transformer factory near Silicon Valley

⚡ AI Executive Summary

Heron Power, a power conversion startup founded by a former Tesla executive, is constructing its initial commercial manufacturing facility in Morgan Hill, California, with plans to begin production in late 2027 and eventually reach 40 gigawatts of annual capacity. The company's modular, software-controlled systems aim to replace traditional oil-filled transformers and accelerate interconnection timelines for renewable energy and data center projects facing a persistent global transformer shortage. Solid-state transformers represent a meaningful shift in grid infrastructure technology, moving from mechanical designs toward digitally controllable power electronics. The proximity of manufacturing to engineering headquarters reflects a deliberate strategy to refine product quality and cost during early-stage scaling—a playbook similar to Tesla's early automotive production. If deployment accelerates as customer demand suggests, this technology could help alleviate interconnection bottlenecks while enabling real-time grid voltage management that legacy transformers cannot provide. Rising import tariffs on foreign power conversion equipment and lower silicon-carbide costs driven by EV supply chains create favorable market conditions for domestic solid-state transformer production.