Search millions of energy dockets, filings, and regulatory documents for free. Filter by Topic, Keywords, and Filing Type — and ask follow-up questions in plain English. Halcyon combines the precision of structured search with the ability to understand what you actually want to find.
Energy filings can run hundreds of pages. Knowing they're new isn't the same as knowing what changed. Halcyon's free Agentic Alerts combine precise search filters with AI-powered analysis — so you get the signal, not the stack
Monitor geothermal forecasts, evaluations, reports, and projects across the U.S.
~25 documents per alertMonitor the PUCT rulemaking, recommendations, and impact of TX Senate Bill 6
~7 documents per alertMonitor Data Centers powered by Gas across the U.S.
~59 documents per alert
Most energy data is too expensive, too stale, or too much work to build in-house.
Halcyon's Data Subscriptions give you asset-level precision across gas plants, large load tariffs, rate cases, battery storage, and new substations — sourced from authoritative regulatory filings, updated monthly.
Track planned U.S. gas plants, with asset-level technology, timelines, prices, and changes
201 Gas Plants - Updated Feb 18State-level market intelligence on how utilities are engaging with data centers and other large load customers
108 Large Load Tariffs - Updated Feb 12Track planned U.S. substations, with asset-level development, timelines, prices, and changes
189 Substations - Updated Feb 2Let's talk about how we can improve your team's productivity.
Last week, we issued our latest update to the New Substation Development Tracker. This edition adds 93 net new projects — all built under the purview of the Electric Reliability Council of Texas (ERCOT) — bringing the total from roughly 200 to 293 substations and switching stations tracked across ERCOT, Northern Grid, West Connect, and CAISO.
Everyone loves antiques. At Halcyon, we believe decommissioned electrical infrastructure makes the best antiques. Nothing brightens up a living room — both figuratively and, depending on residual charge, literally — quite like a piece of retired utility equipment with real character.
