Halcyon builds an AI-driven platform and data subscriptions that let energy professionals search and query regulatory filings, dockets, and energy datasets in natural language and deploy alerts to surface critical developments. Its commercial offerings include the Halcyon Platform and Halcyon Data Subscriptions, which provide continuously updated trackers such as Large Load Tariff, Gas Power Plant, Battery Energy Storage System (BESS), Rate Case/Cost-of-Capital, and New Substation Development. The company targets hyperscalers and digital infrastructure providers, financial services firms, energy developers, and utilities to accelerate decision-making around siting, market entry, and commercial opportunities. Halcyon plans to expand its software capabilities and deepen its proprietary data catalog as it scales to meet growing demand. The company was incorporated in 2023 and is headquartered in San Francisco.

Total raised

$32M

Funding rounds

2

Latest round

Series A

Latest activity

Mar 2026