Modern electrical grids are no longer static, one‑directional power networks. They are dynamic, cyber‑physical ecosystems composed of distributed energy resources, microgrids, storage systems, electric vehicles, industrial loads, renewable generation, real‑time market signals, and autonomous grid controllers. These systems operate under continuous uncertainty: fluctuating demand, intermittent generation, frequency drift, voltage instability, topology changes, equipment failures, and cyber‑physical disturbances. I introduce Lume‑Grid, a deterministic governance substrate for electrical grids. Built on the Lume‑OS kernel, Lume‑Grid integrates grid invariants, load‑flow envelopes, frequency‑stability envelopes, topology‑coherence invariants, deterministic arbitration across nodes, timing‑corrected ordering, safe‑state override, grid‑event certificate fabric, and replay‑identical grid behavior. Lume‑Grid transforms grid control from heuristic to deterministic, from opaque to auditable, from asynchronous to timing‑corrected, from nondeterministic to replay‑identical, and from fragile to invariant‑preserving.
Ronald Jason Andrews (Mon,) studied this question.