Executive Summary The objective of this report is to assess the Greenhouse Gas (GHG) Inventory for the Pittsburgh Campus of the University of Pittsburgh (Pitt). The report presents a fiscal year (FY) 2017 GHG emissions inventory from direct and indirect activities of Pitt. This is Pitt’s fourth GHG inventory document since its initiation in 2008, and it builds on and compares to the previous three inventories [1,2,3]. We anticipate that the report will serve as a guideline for any committee or group aiming to reduce the emissions of Pitt in the future. Understanding current GHG emissions is a necessary step towards developing strategies to lower future GHG emissions. Pitt has set specific goals related to its sustainability. A Sustainability Plan was published in January 2018 and details goals for 15 categories that fall into three overarching ideas: Exploration, Community & Culture, and Stewardship [4]. Most of these goals are on a timeline parallel to the Pittsburgh 2030 District, which Pitt is a member. The Pittsburgh 2030 District Goals are to reduce water consumption, energy consumption, and CO2 transportation emissions by 50% by 2030 [5]. Pitt intentionally aligned goals within the Sustainability Plan with those of the 2030 District, as well as adding many more. For this study, fiscal year 2017 was selected as the temporal boundary with the goal of comparing results to FY 2008, 2011, and 2014 GHG inventories. There have been numerous changes in campus infrastructure over the years, with a potential to change source distribution and GHG emissions. One of the most significant projects has been the construction of the state of the art Carrillo Street Steam Plant (CSSP). The CSSP is an ultra- low NOx control plant, considered one of the cleanest heating plants of any higher educational institutions in the United States [6]. Reaching full operation in FY14, the CSSP services Pitt and the University of Pittsburgh Medical Center (UPMC), meeting 64% of Pitt’s steam demand. The construction of this plant allows the university to steadily decrease its dependence on coal, impacting its GHG profile. The overall distribution of GHG emissions by source remained similar to previous years as shown in Figure 1. Table 1 shows greenhouse gas emissions totals for the four inventoried fiscal years with sources corresponding to source distributions shown in Figure 1. The most significant shift happened due to Pitt’s switch to consuming primarily CSSP’s steam for heating. Due to this switch, the distribution in GHG emissions for heating has shifted from 20% purchased steam and 0% on-site generated steam in 2008, to 11% and 8.3% in 2011, to 10% and 14% in 2014, to the latest 8% and 12% in 2017. It should be noted that this inventory saw a shift in the tool used to evaluate the greenhouse gas emissions of the campus. Previously, a tool called Clean Air-Cool Planet was used; this Excel-based tool has since been discontinued and users were transitioned to an online tool called SIMAP (Sustainability Indicator Management & Analysis Platform). Therefore, in order to allow for accurate comparison from year to year, all previous data were imported into this online tool; all tables in this year’s report reflect these updated results from SIMAP. Although overall total emissions for each fiscal year are effectively the same, it should be noted that the emissions from some categories do change slightly. This can primarily be attributed to slight changes in emissions factors that varied from one tool to the other; these specific instances will be highlighted throughout the report.
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