Halcyon Raises $21M in Series A Funding

Why it matters: Companies are looking for help accessing power more quickly.

Zoom in: Energize Capital, which invests in digital-focused energy and climate startups, led the round.

• Zero Infinity Partners, Congruent Ventures, Obvious Ventures and Sabanci Climate Ventures participated.

What's next: The company, founded in 2023, plans to hire across engineering, sales and customer service. "We're focused on nailing the product," says Falck.

• Halcyon is riding the wave of energy demand growth. "The biggest uptake is essentially solving time to power," says co-founder and chief strategy officer Nat Bullard.

Catch up quick: Halcyon was co-founded by Falck, Twitter's former head of revenue product; Bullard, a long-time energy analyst; and engineer Alexander Huras, who's Chief Technology Officer.

• The company raised a $10.8 million seed round in 2024 led by Obvious Ventures and Congruent Ventures and joined by Overture Climate VC.

How it works: Halcyon uses machine learning and large language models to aggregate documents and organize data from public utility commissions, energy regulators and grid operators.

• The company sells data subscriptions, like its natural gas plant tracker, and also enables customers to search and query the energy data.
• Halycon's machines read between two and 20,000 new documents a day, and any of these documents could be between one and 20,000 pages, says Falck: "It's an enormous volume of content."

Customers include hyperscalers like OpenAI and digital infrastructure providers like Cloverleaf, as well as financial firms, energy developers, infrastructure companies and equipment providers.

Zoom out: Electricity demand is growing quickly for the first time in decades in the U.S., thanks in part to the deployment of AI data centers.

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