The computer creates a utility demand forecast model for weather parameters by receiving a plurality of utility parameter values, wherein each received utility parameter value corresponds to a weather parameter value. Determining that a range of weather parameter values lacks a sufficient amount of corresponding received utility parameter values. Determining one or more utility parameter values that corresponds to the range of weather parameter values. Creating a model which correlates the received and the determined utility parameter values with the corresponding weather parameters values.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OF DEVELOPMENT
 This invention was made with Government support under DE-OE0000190 awarded by Department of Energy. The Government has certain rights in this invention.