Why don the estimates of total energy consumption (Industrial, Residential, Commercial) match the energy estimates in other parts of the EIA Web site (e.g., the State Energy Data Report)?
EIA collects two types of energy statistics by end use sector. The first type is energy supply statistics which are obtained through sales data provided by the energy suppliers. For energy supply statistics, allocations of energy consumption among sectors are based on how the suppliers classify customer accounts. A second type is energy demand statistics. These estimates of energy use are based on EIA definitions of the predominant energy consuming units within each sector, such as residential households, commercial buildings, and manufacturing establishments. The demand statistic also include information on the characteristics of the energy consuming units, thereby allowing analysis of the relationships between energy consumption and the unit characteristics. Differences between supply and demand statistics are due primarily to (1) differences in sectorial definitions — energy consuming units verses energy accounts–and (2) coverage of each sector. For example, the commercial buildin
