The data in question appears to be simulated and intended for use in developing energy calculations for buildings: http://apps1.eere.energy.gov/buildings/energ

The data in question appears to be simulated and intended for use in developing energy calculations for buildings: http://apps1.eere.energy.gov/buildings/energyplus/weatherdata_sources.cfm http://apps1.eere.energy.gov/buildings/energyplus/weatherdat... That said, DOE is probably keenly interested in gathering reliable weather data so that they can keep the power grid working.