The promotion of US energy efficiency policy is seen as a very important activity by the Energy Information Agency (EIA …). Generally, the level of energy efficiency of a state is approximated by energy intensity, commonly calculated as the ratio of … energy use to GDP. However, energy intensity is not an accurate proxy for energy efficiency, because changes in energy …

Aggregate data show a large and decades-long decline in construction sector productivity. This decline in such a large … sector has had a material effect on secular productivity growth for the economy as a whole. Prior work has focused on the … role of potential measurement problems in construction, particularly output deflators in the measurement of productivity …