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Halcyon Data Subscriptions

Quickly evaluate energy market dynamics and find new growth opportunities with regularly updated data sets collated from authoritative sources nationwide 
UPDATED - April 15 2026

Gas Power Plant Tracker

247 Plants 153GW Capacity

US gas-fired power plant costs have tripled this decade. Halcyon has built a multi-state, centralized feed of all planned US assets, with asset-level technology, timelines, prices, and changes.

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UPDATED - April 13 2026

Large Load Tariff Tracker

152 Tariffs

Large load tariffs are specialized electricity rate structures designed for customers with significant power demand, like data centers. These tariffs are used to allocate costs more equitably, ensure grid stability, and manage risk.

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UPDATED - April 27 2026

Rate Case Tracker

278 Rate Cases 84M Utility Customers

Track key metrics from all IOU-submitted rate cases across the country.

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UPDATED - April 10 2026

Battery Energy Storage
System Tracker

648+ BESS representing ~289 GWh 

Track planned U.S. utility-scale storage, with asset-level technology, timelines, prices, and changes.

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UPDATED - May 1 2026

New Substation
Development Tracker

Track 445+ projects informing new substation development nationwide.

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December 3 2025

FERC ANOPR Comment Analysis

175 Organization comments

This workbook summarizes comments submitted regarding FERCs proceeding on the interconnection of large load (RM26-4-000).

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We have a pipeline of Data Subscriptions in development, we’d love to hear what’s important to you. Please reach out.

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The Next Phase of Energy, Power, and AI
Latitude Media - Transition AI 2026 Opening Keynote

Across 10 concepts and 20 charts, Nat Bullard uses Halcyon's data to examine the physical constraints emerging as hyperscaler capex approaches $700 billion and data center power demand scales from 50 to 300 gigawatts. The presentation traces what this means for the grid – from surging interconnection queues and utility load forecasts, to 77GW of new gas generation in the pipeline, and open questions about interference workloads. 

Download the full keynote presentation now, for free.

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