Methods of controlling a resource demand system are disclosed. One method includes obtaining weather data from at least one data source that collects weather data at a plurality of areas. A weather value for a target location is calculated from the weather data. A weather value is sensed for the target location. The calculated weather value is compared with the sensed weather value to validate at least one of the calculated weather value and the sensed weather value, and a control value is calculated based on at least one of the calculated weather value and the sensed weather value.
