German energy metering quantities: DST-correct Europe/Berlin and 06:00-Gastag calendar arithmetic, exact decimal values, and the market's own code lists. Zero I/O, no async, no clock.
//! Allocation between metering points: the UTILTS Berechnungsformel, the
//! § 42b community allocation, § 42c energy sharing and charging sessions.
pubmodcommunity;pubmodformula;pubmodsession;pubmodsharing;