| Overall Rating | Silver |
|---|---|
| Overall Score | 54.05 |
| Liaison | Tony Gillund |
| Submission Date | March 23, 2023 |
Purdue University
OP-1: Emissions Inventory and Disclosure
| Status | Score | Responsible Party |
|---|---|---|
|
1.42 / 3.00 |
Tony
Gillund Director of Sustainability Campus Planning, Architecture and Sustainability |
Has the institution conducted a GHG emissions inventory within the previous three years that includes all Scope 1 and 2 emissions? :
A copy of the most recent GHG emissions inventory:
A brief description of the methodology and/or tool used to complete the GHG emissions inventory:
Purdue’s utilities are utilized on campus in three primary forms: electricity, chilled water and steam. Around 50% of the university’s electricity need is supplied by the university owned and operated combined heat and power (CHP) plant, and the other 50% is from grid purchased electricity. 100% of chilled water is produced by the university’s owned facilities. Around 60% of the steam demand is supplied by the Purdue CHP plant, and the other 40% is purchased from Duke Energy’s onsite CHP facility.
For Scope 1 emissions, the university is required to submit greenhouse gas emissions reports to the EPA as a compliance activity under 40 CFR Part 98 of the Clean Air Act. These emissions are Tier 1, and include the university boilers, the purchased steam from the duct burner on the Duke’s CHP facility, and numerous small accounts across campus using natural gas, propane, and diesel fuel. The university boilers have Continuous Emissions Monitoring Systems that gathers the vast majority of the university’s Scope 1 emissions. The remaining Scope 1 emissions are calculated inhouse and reported to the EPA for review.
For scope 2 emissions, Purdue uses an Emission Factor calculation to determine the associated emissions for purchased electricity. Emission factors are used from the EPA website for the Indiana Electricity Profile.
Has the GHG emissions inventory been validated internally by personnel who are independent of the GHG accounting and reporting process and/or verified by an independent, external third party?:
A brief description of the GHG inventory verification process:
Documentation to support the GHG inventory verification process:
Gross Scope 1 GHG emissions, performance year:
| Weight in MTCO2e | |
| Stationary combustion | 364,235 Metric tons of CO2 equivalent |
| Other sources (mobile combustion, process emissions, fugitive emissions) | 0 Metric tons of CO2 equivalent |
Total gross Scope 1 GHG emissions, performance year:
Gross Scope 2 GHG emissions, performance year (market-based):
| Weight in MTCO2e | |
| Imported electricity | 151,604 Metric tons of CO2 equivalent |
| Imported thermal energy | 0 Metric tons of CO2 equivalent |
Total gross Scope 2 GHG emissions, performance year:
Gross GHG emissions from biogenic sources, performance year:
Does the GHG emissions inventory include Scope 3 emissions from the following sources?:
| Yes or No | Weight in MTCO2e | |
| Business travel | No | --- |
| Commuting | No | --- |
| Purchased goods and services | No | --- |
| Capital goods | No | --- |
| Fuel- and energy-related activities not included in Scope 1 or Scope 2 | No | --- |
| Waste generated in operations | No | --- |
| Other sources | No | --- |
Total Scope 3 GHG emissions, performance year:
A brief description of how the institution accounted for its Scope 3 emissions:
Purdue University does not currently track Scope 3 emissions
Has the institution completed an inventory within the previous three years to quantify its air pollutant emissions?:
Annual weight of emissions for::
| Weight of Emissions | |
| Nitrogen oxides (NOx) | 270 Tons |
| Sulfur oxides (SOx) | 216 Tons |
| Carbon monoxide (CO) | 0 Tons |
| Particulate matter (PM) | 0 Tons |
| Ozone (O3) | 0 Tons |
| Lead (Pb) | 0 Tons |
| Hazardous air pollutants (HAPs) | 0 Tons |
| Ozone-depleting compounds (ODCs) | 0 Tons |
| Other standard categories of air emissions identified in permits and/or regulations | 0 Tons |
Do the air pollutant emissions figures provided include the following sources?:
| Yes or No | |
| Major stationary sources | Yes |
| Area sources | No |
| Mobile sources | No |
| Commuting | No |
| Off-site electricity production | No |
A brief description of the methodology(ies) the institution used to complete its air emissions inventory:
At Purdue’s combined heat and power plant, NOx and SO2 data is collected from 40 CFR Part 60/75 certified emissions monitoring systems.
Gross Scope 2 GHG emissions from purchased electricity (location-based):
Gross Scope 2 GHG emissions from imported thermal energy (location-based) :
Website URL where information about the institution’s emissions inventories is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.