Analysts assessing energy policies and energy modelers forecasting future trends need to have  access to reliable and concise energy statistics. Lawrence Berkeley National Laboratory  evaluated several sources of California energy data, primarily from the California Energy  Commission and the U.S. Energy Information Administration, to develop the California  Energy Balance Database (CALEB). This database manages highly disaggregated data on  energy supply, transformation, and end-use consumption for each type of energy commodity  from 1990 to the most recent year available (generally 2001) in the form of an energy balance,  following the methodology used by the International Energy Agency. This report presents the  data used for CALEB and provides information on how the various data sources were  reconciled. CALEB offers the possibility of displaying all energy flows in numerous ways  (e.g., physical units, Btus, petajoules, different levels of aggregation), facilitating comparisons  among the different types of energy commodities and different end-use sectors. In addition to  displaying energy data, CALEB can also be used to calculate state-level energy-related carbon  dioxide emissions using the methodology of the Intergovernmental Panel on Climate Change.