Calls for 80% greenhouse gas (GHG) emissions reductions by mid-century are becoming the norm worldwide, and these reductions are likely to include a large component of energy' efficiency-based GHG reduction strategies. The'2030 "extreme energy efficiency" goal'to halve US energy use by 2030 can be viewed as a way to achieve deep GHG reduction targets such as reducing GHG by 80% from 1990 levels in 2050 (Obama 2009) using energy efficiency strategies only. This very challenging goal 'might be made easier for the industry sector if indirect reductions such as those due to reduced demand for high embodied energy materials in buildings and -transportation- translated into large-reductions in industrial energy use. For example, iirthe US, roughly 30% of all industrial energy use is related to buildings, mostly owing to materials manufacturing. In this paper we examine such indirect impact's for the industrial sector. From our analysis, we see that indirect industrial impacts of energy efficiency increases in buildings and transportation, while significant, are still only a fraction (～11%) of the impacts of direct energy efficiency requirements for- industry under the extreme energy efficiency scenario. Similarly, preliminary analysis appears to show gains or losses in different materials industries lead to relatively minor gains or losses in other industries. We also found even the most energy intensive industries have the largest indirect effects on service industries.
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