Overview
- The Series B was led by Andreessen Horowitz’s American Dynamism Fund and Breakthrough Energy Ventures, with Capricorn Investment Group, Energy Impact Partners, Gigascale Capital and Valor Atreides AI Fund participating.
- Heron reports customer interest topping 40 gigawatts for its Heron Link solid‑state transformers.
- Each roughly 5‑megawatt unit converts medium voltage to 800 volts for modern server racks and uses swappable modules that can be replaced in about 10 minutes.
- Built‑in lithium‑ion batteries deliver about 30 seconds of ride‑through power, which the company says could allow data centers to replace traditional UPS systems and cut around 70% of associated equipment.
- The company says its units are about 30% smaller and a quarter the weight of conventional transformers and are targeting data centers, large solar projects and grid‑scale batteries, with advisors including Tesla veterans JB Straubel and Zachary Kirkhorn.