| Overall Rating | Gold |
|---|---|
| Overall Score | 78.11 |
| Liaison | Kristin Larson |
| Submission Date | Oct. 23, 2023 |
San Diego State University
OP-1: Emissions Inventory and Disclosure
| Status | Score | Responsible Party |
|---|---|---|
|
2.17 / 3.00 |
Risto
Beatty Decarbonization Program Manager Ackerstein 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:
SDSU utilized our new Energy Information System (EIS), SkySpark, that has centralized all campus meters into one interface allowing us to streamline regulatory reporting. We have imported the emissions factors from SIMAP for all scopes.
Scope 3 commuting data was generated and received via the University's annual transportation survey. Other Scope 3 business travel mileage was received from Accounts Payable. Other categories include water and wastewater, in which we analyzed the actual carbon content of San Diego water to come up with this value.
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 | 50,250.75 Metric tons of CO2 equivalent |
| Other sources (mobile combustion, process emissions, fugitive emissions) | 453.85 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 | 2,922.47 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 | Yes | 4,862.84 Metric tons of CO2 equivalent |
| Commuting | Yes | 28,045.19 Metric tons of CO2 equivalent |
| Purchased goods and services | --- | --- |
| Capital goods | --- | --- |
| Fuel- and energy-related activities not included in Scope 1 or Scope 2 | Yes | 6,552.77 Metric tons of CO2 equivalent |
| Waste generated in operations | Yes | 0 Metric tons of CO2 equivalent |
| Other sources | --- | --- |
Total Scope 3 GHG emissions, performance year:
A brief description of how the institution accounted for its Scope 3 emissions:
Commuting emissions were based on university transportation surveys con ducted by Dr. Appleyard. Financed travel data was provided by accounts payable using a cost based method. Solid waste and waste water is tracked within SkySpark and converted to GHG emissions with SIMAP default factors. Fuel FERA and T&D emissions were calculated using SIMAP factors specific to the California region.
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) | 16.58 Tons |
| Sulfur oxides (SOx) | 0.22 Tons |
| Carbon monoxide (CO) | 1.73 Tons |
| Particulate matter (PM) | 2.52 Tons |
| Ozone (O3) | --- |
| Lead (Pb) | 0.03 Tons |
| Hazardous air pollutants (HAPs) | --- |
| Ozone-depleting compounds (ODCs) | --- |
| Other standard categories of air emissions identified in permits and/or regulations | --- |
Do the air pollutant emissions figures provided include the following sources?:
| Yes or No | |
| Major stationary sources | Yes |
| Area sources | --- |
| Mobile sources | Yes |
| Commuting | Yes |
| Off-site electricity production | Yes |
A brief description of the methodology(ies) the institution used to complete its air emissions inventory:
Fuel use is from gas turbines, duct burners, and boilers at the cogeneration plant. The emissions factors are from the 2022 Fiscal Year (attached below).
SDSU's cogeneration plant consists of 2 Taurus 60 natural gas turbines rated at 27,000 lbs/hr of steam each and a steam turbine for the combined cycle. Total rated steam output with duct burners is 88,000 lbs/hr.
For all categories outside of major stationary sources, air emissions inventory was calculated using SIMAP.
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.