Patent ID: 8370092

Claim:
A method of associating chronological time with energy consumption, comprising: a) storing a plurality of energy consumption values including a most recent energy consumption value and a plurality of successively earlier energy consumption values at a storage location, each energy consumption value corresponding to a time interval of a first type; b) sending the plurality of energy consumption values to a source external to the storage location; c) obtaining from the source external to the storage location a first chronological time information regarding one of the plurality of energy consumption values and d) associating each of the plurality of energy consumption values with a time interval of a second type, each time interval of the second type associated with at least one chronological time value obtained from the source external to the storage location, wherein associating each of the plurality of energy consumption values with a time interval of the second type includes first (i) determining a time interval of the second type to be associated with the most recent energy consumption value by associating the most recent energy consumption value with the first chronological time information, and then (ii) determining the time interval of the second type to be associated with the successively earlier energy consumption values by associating the plurality of successively earlier energy consumption values with the first chronological time information less some multiple of the time interval of the first type.