1. An energy conservation metering system, comprising: one or more energy load meters operably coupled with a facility's energy supply system suitably to either individually or collectively measure a total energy load of the facility, wherein the one or more energy load meters further collectively include data output circuitry suitable to produce data indicative of the measured total facility energy load during a first time period; a data record stored at a tangible, machine-readable medium, including data indicative of an external environmental temperature during the first period measured at one or more thermal meters disposed and configured suitably to measure an external environmental temperature proximate the facility and to produce the data indicative of an external environmental temperature during the first period; and data processing circuitry operably coupled with one or more non-transitory data storage media, wherein the data storage media either individually or collectively include stored device-executable coded instructions configured, when executed by the data processing circuitry, to cause the data processing circuitry to: process both of the data indicative of the measured facility total energy load during the first time period and the data indicative of the measured external environmental temperature during the first time period; disaggregate plural identified end-use energy load portions from the measured facility total energy load; and produce a first analog facility model comprising the plural identified end-use energy load portions corresponding to the measured external environmental temperature during the first time period.