Directional Drift Before Electricity Price Breaks: Evidence from Load Growth and Constraint Accumulation

Boundary note (added 2026-07-23): the Ω-centered empirical layer was self-retracted on 2026-05-31. Ω-centered validation is not currently supported as the active empirical basis; this record remains a historical, fixed, Ω-centered record and must not be cited as current validation. See the VOT Empirical Layer Boundary Note — https://doi.org/10.5281/zenodo.20474232. A later four-dataset head-to-head found that order gated by critical slowing does not beat free-energy signals (10.5281/zenodo.21422215, negative result). Electricity price spikes are often interpreted as sudden shocks caused by weather events, generator outages, or unexpected demand changes. However, high-frequency electricity market data suggest that extreme price events may be preceded by gradual structural changes in system conditions. This paper introduces a drift-to-break framework in which system stress accumulates through load growth and transmission constraint intensification before reaching a critical threshold where price breaks occur. Using publicly available electricity market data, the paper examines both a detailed case study of a major spike event and a multi-event alignment analysis across multiple spike episodes. The results show that system load and constraint pressure tend to rise systematically before price spikes occur. These findings suggest that electricity price spikes are not purely instantaneous shocks but often emerge from structural drift in system conditions. Monitoring such drift may provide early signals of emerging stress in electricity markets. The paper presents a conceptual framework together with empirical evidence from event-level and multi-event analysis.