//! Energy conversion settings for `config.json → energy`.
use ;
/// Energy conversion settings (`config.json → energy`).
///
/// Controls reservoir reference-volume computation for FPHA hydros.
/// `V_ref = V_min + fraction · (V_max − V_min)` is the reference storage
/// used to evaluate the equivalent head `h_eq` (and thereby `ρ_eq`).
/// Per-plant per-season overrides are loaded from
/// `system/hydro_reference_volume_fractions.parquet`.