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The second component of our greenhouse gas reduction strategy focuses on stationary assets, which primarily means facilities (excluding the vehicles, planes, trains, and ships used in our transport network). Stationary emissions declined to 8.0 percent of our global carbon inventory in 2012 from 8.2 percent in 2011. We continue to develop, sustain, or expand initiatives to reduce energy use in all our facilities. Below we discuss energy saved due to conservation and efficiency improvements, and initiatives to reduce indirect energy consumption and reductions achieved. A complete listing of our enterprise energy performance appears in Appendix E.

New Process for Measuring Resource Consumption 
At the end of 2012, we rolled out a new process to measure and manage resource consumption at package-handling facilities in our U.S. Domestic Package segment. Each of the 17 geographic districts in the segment now projects its use of electricity, natural gas, and water for the year and then tracks actual usage. Districts measure consumption using data from all their package-handling facilities, which may entail 50 to 100 distinct utilities accounts, and index them to an overall sustainability score for the district. Projects and actual usage are updated and reported to management on a monthly basis. We believe that more regular reporting will help us improve our understanding of local consumption patterns and help identify opportunities for reducing resource consumption over time. 

Energy Generation and Conservation 

In 2011, we substantially completed our multi-year lighting upgrade program in which we replaced or upgraded approximately 100,000 fixtures with more energy-efficient lamps. In 2012, we began to focus on new lighting technologies that can provide a return on investment in small-scale implementations. The first projects in this new phase, all in the United States, are expected to generate energy savings of 862,000 kilowatt hours per year. 

Renewable Energy 
In 2012, we continued to expand our “owner/operator” model for renewable energy. We added two new photovoltaic solar systems to facilities in Parsippany, New Jersey and Secaucus, New Jersey, respectively, each generating 1.125 megawatts of electricity. Our wholly-owned renewable energy generating capacity now stands at 2.6 megawatts in the United States, and can produce more than 3.5 million kilowatt hours a year. We continued to evaluate more sites and facilities for renewable energy production in the future. 

Back-Office Energy Conservation 
Our attention to energy efficiency within our office and operating facilities continued in 2012, with upgrades to heating and cooling systems and improved energy management systems. These projects in the United States are projected to save 185,000 kilowatt hours and 11,300 therms of natural gas annually.