Heron Power Raises $140M for Grid Modernization

In a significant boost for the modernization of America's energy infrastructure, Heron Power has successfully closed a $140 million Series B funding round. This substantial capital infusion, co-led by venture heavyweights Andreessen Horowitz's (a16z) American Dynamism Fund and Breakthrough Energy Ventures, is earmarked for scaling the production of its innovative solid-state transformer technology, Heron Link. The investment underscores a growing market imperative to address the escalating demands of electrification and the burgeoning artificial intelligence (AI) data center sector.

The fresh capital will primarily finance the construction of a 40-gigawatt, highly automated U.S. manufacturing facility dedicated to producing Heron Link. This strategic move aims to alleviate critical bottlenecks in power delivery, particularly for projects requiring rapid deployment and enhanced reliability. Traditional transformers, often characterized by their bulk, high cost, and extended lead times, are struggling to keep pace with the current energy landscape. The demand for these legacy components has more than doubled since 2019, exacerbating supply chain pressures and threatening economic growth and energy security.

Heron Power's Heron Link solution represents a paradigm shift in power electronics. By leveraging advanced power semiconductors and a modular architecture, it facilitates the direct connection of low-voltage DC technologies, such as solar arrays, battery storage systems, and AI compute infrastructure, to medium-voltage AC grids. This innovation effectively eliminates several layers of conventional electrical equipment, promising increased efficiency, faster project timelines, and reduced overall costs. Drew Baglino, Founder and CEO of Heron Power, emphasized the urgency, stating, "The grid infrastructure designed decades ago is ill-equipped for today's accelerating energy demands and the rapid expansion of gigascale compute. We are building an alternative future where modern power electronics enable faster project deployment, enhanced grid reliability, and affordable scalability."

The investment arrives amidst a period of unprecedented global investment in clean energy and grid modernization. In 2025 alone, a record $1.2 trillion was channeled into renewable energy generation, energy storage, and power grid upgrades worldwide. This surge is driven by the dual forces of electrification-induced demand growth and the urgent need to replace aging infrastructure; over half of the existing U.S. grid equipment is reportedly over 30 years old. Erin Price-Wright, General Partner at Andreessen Horowitz, highlighted the broader impact, noting, "Heron Power isn't just creating a product essential for new electricity generation and data center buildout; they are developing the technology to propel our aging electric grid into a software-defined, AI-native 21st century, manufactured at scale domestically."

Beyond the lead investors, the funding round saw strong participation from existing backers, including Capricorn Investment Group, Energy Impact Partners, Valor Atreides AI Fund, and Gigascale Capital. This continued support underscores confidence in Heron Power's vision and technological prowess. Dave Danielson, Partner at Breakthrough Energy Ventures, reiterated this sentiment, stating, "Heron is reengineering one of the grid’s most critical bottlenecks with next-generation solid-state transformers, manufactured at scale in the U.S. Their deep expertise in power electronics and commercialization uniquely positions them to redefine how power moves across the grid."

The market's appetite for such solutions is evident, with Heron Power already identifying over 40 gigawatts of early interest from leading developers in utility-scale solar, energy storage, and data center projects. This strong demand signals a clear shift towards innovative power infrastructure that can meet the stringent requirements of modern digital loads. As Sheldon Kimber, CEO of Intersect, a prominent energy infrastructure developer, commented, "As we build some of the largest data centers on the planet, co-locating with massive new power generation, partners like Heron will provide the innovative solutions we need to tie it all together." Heron Power's mission to accelerate electricity sector growth while maintaining reliability and affordability positions it as a critical player in the evolving energy landscape.