Heron Power is developing a modular solid-state transformer, branded Heron Link, that converts medium-voltage electricity to the 800-volt power required by modern servers and other high-demand loads. Each 5-megawatt unit contains multiple semiconductor-based modules and integrated lithium-ion batteries, allowing failed modules to be swapped in roughly 10 minutes and providing 30-second ride-through power that can replace traditional uninterruptible power supplies. By combining several pieces of legacy equipment into one, the product can eliminate roughly 70 % of data-center power gear and materially cut both cost and points of failure. Although data centers currently represent about one-third of sales interest, the remainder comes from solar and grid-scale battery operators that value the transformer's speed and bidirectional power management. Customer indications already exceed 40 GW of demand, prompting the company to plan a factory capable of producing 40 GW of transformers per year. Pilot production is targeted for early 2027 with full ramp-up over the following two years. The company has raised successive rounds in quick succession to accelerate these manufacturing plans, leveraging founder and CEO Drew Baglino’s two decades of high-volume production experience at Tesla.

Total raised

$178M

Funding rounds

2

Latest round

Series B

Latest activity

Feb 2026