Overall Rating Silver
Overall Score 53.97
Liaison Dennis Carlberg
Submission Date Aug. 2, 2019
Executive Letter Download

STARS v2.1

Boston University
OP-1: Greenhouse Gas Emissions

Status Score Responsible Party
Complete 4.76 / 10.00 Stephen Ellis
Data Manager
sustainability@BU
"---" indicates that no data was submitted for this field

Has the institution conducted a GHG emissions inventory that includes all Scope 1 and 2 emissions? :
Yes

Does the institution’s GHG emissions inventory include all, some or none of its Scope 3 GHG emissions from the following categories?:
All, Some, or None
Business travel None
Commuting None
Purchased goods and services None
Capital goods None
Waste generated in operations None
Fuel- and energy-related activities not included in Scope 1 or Scope 2 None
Other categories None

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, including how the institution accounted for each category of Scope 3 emissions reported above:

Boston University (BU) used the University of New Hampshire's Sustainability Indicator Management and Analysis Platform (SIMAP) to calculate greenhouse gas emissions. Prior to BU's FY2018 STARS submission, we used an institutional boundary that included just the Charles River and Medical Campuses. Starting in our FY2018 STARS submission, we have expanded our institutional boundary and associated metrics to off-campus facilities within New England. In addition, on June 1, 2018, Wheelock College merged with BU, becoming the Fenway Campus; this campus will also be included in our institutional boundary for the last month of the 2018 fiscal year (FY). We intend to include Global Programs when that data becomes available in the coming years.

We have uploaded FY 2006 through 2018 data into SIMAP. BU uses an FY2006 baseline year for all sustainability-metric data. We account for Scope 1 emissions of (1) stationary combustion of fossil fuels on campus, (2) transportation-related fossil fuel consumption, (3) emissions from refrigerants & chemicals, and (4) fertilizers, Scope 2 emissions of purchases of (5) electricity and (6) steam.

We included emissions from the Boston University Shuttle (BUS) for the first time in our 2018 STARS submission. In that submission, we included the same amount of emissions in our baseline year (FY06) as our performance year (FY16). In our FY2018 STARS submission, we include more precise estimates of the emissions from the BUS. Specifically, we used nearly complete BUS fuel consumption data from FY13-18 to estimate FY06-12 using a linear regression model. The FY13-18 data had 5 months of missing data; we estimated the fuel consumption of these missing months as the average of the other four years of data for the specific month missing.

Overall for our baseline, we estimate a 4% decrease in our Scope 1 Stationary Emissions, a 50% decrease in our Scope 1 Other Emissions, and a 1% increase in our Scope 2 Electricity Emissions due to the reanalysis of FY06 utility data and the more precise estimation of FY06 BUS-related fuel consumption.

Regarding water consumption: We used BU's Facilities Management and Planning Department records of water consumption on campus.

Regarding transmission and distribution losses: We use the values reported by SIMAP that are generated by entering in electricity consumption data.


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?:
No

A brief description of the internal and/or external verification process:
---

Documentation to support the internal and/or external verification process:
---

Does the institution wish to pursue Part 2 and Part 3 of this credit? (reductions in Scope 1 and Scope 2 GHG emissions):
Yes

Gross Scope 1 and Scope 2 GHG emissions:
Performance Year Baseline Year
Gross Scope 1 GHG emissions from stationary combustion 48019 Metric Tons of CO2 Equivalent 58825 Metric Tons of CO2 Equivalent
Gross Scope 1 GHG emissions from other sources 1614 Metric Tons of CO2 Equivalent 1802 Metric Tons of CO2 Equivalent
Gross Scope 2 GHG emissions from purchased electricity 66250 Metric Tons of CO2 Equivalent 91795 Metric Tons of CO2 Equivalent
Gross Scope 2 GHG emissions from other sources 10387 Metric Tons of CO2 Equivalent 13013 Metric Tons of CO2 Equivalent
Total 126270 Metric Tons of CO2 Equivalent 165435 Metric Tons of CO2 Equivalent

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Year July 1, 2017 June 30, 2018
Baseline Year July 1, 2005 June 30, 2006

A brief description of when and why the GHG emissions baseline was adopted (e.g. in sustainability plans and policies or in the context of other reporting obligations):

In an effort to capture a more complete picture of our emissions, we have included fleet, fugitive, and shuttle emissions for the first time under Scope 1 - other sources. These figures had not been included in the past because of missing or incorrect data dating back to FY 2006. Historically, the boundary for the University's STARS reports has been limited to the Charles River and Medical Campuses. This year, for the first time we have been able to capture emissions data from facilities off campus within New England. We intend to include Global Programs when that data becomes available in the coming years. In addition, on June 1, 2018, Wheelock College merged with BU, becoming the Fenway Campus; this campus will also be included in our institutional boundary for the last month of the 2018 fiscal year (FY). We intend to include Global Programs when that data becomes available in the coming years.


Figures needed to determine total carbon offsets:
Performance Year Baseline Year
Third-party verified carbon offsets purchased (exclude purchased RECs/GOs) 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent
Institution-catalyzed carbon offsets generated 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent
Carbon sequestration due to land that the institution manages specifically for sequestration 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent
Carbon storage from on-site composting 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent
Carbon offsets included above for which the emissions reductions have been sold or transferred by the institution 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent
Net carbon offsets 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent

A brief description of the offsets in each category reported above, including vendor, project source, verification program and contract timeframes (as applicable):
---

Emissions reductions attributable to Renewable Energy Certificate (REC) or Guarantee of Origin (GO) purchases:
Performance Year Baseline Year
Emissions reductions attributable to REC/GO purchases 0 Metric Tons of CO2 Equivalent 0 Metric Tons of CO2 Equivalent

A brief description of the purchased RECs/GOs including vendor, project source and verification program:
---

Adjusted net Scope 1 and 2 GHG emissions:
Performance Year Baseline Year
Adjusted net Scope 1 and 2 GHG emissions 126270 Metric Tons of CO2 Equivalent 165435 Metric Tons of CO2 Equivalent

Figures needed to determine “Weighted Campus Users”:
Performance Year Baseline Year
Number of students resident on-site 11504 11185
Number of employees resident on-site 175 181
Number of other individuals resident on-site and/or staffed hospital beds 0 0
Total full-time equivalent student enrollment 27168 24623
Full-time equivalent of employees (staff + faculty) 9253 8439
Full-time equivalent of students enrolled exclusively in distance education 993 1605
Weighted campus users 29490.75 26434.25

Adjusted net Scope 1 and 2 GHG emissions per weighted campus user:
Performance Year Baseline Year
Adjusted net Scope 1 and 2 GHG emissions per weighted campus user 4.28 Metric Tons of CO2 Equivalent 6.26 Metric Tons of CO2 Equivalent

Percentage reduction in adjusted net Scope 1 and Scope 2 GHG emissions per weighted campus user from baseline:
31.58

Gross floor area of building space, performance year:
15029385 Gross Square Feet

Floor area of energy intensive building space, performance year:
Floor Area
Laboratory space 678619.76 Square Feet
Healthcare space 63946.99 Square Feet
Other energy intensive space 229416.27 Square Feet

EUI-adjusted floor area, performance year:
16743934.77 Gross Square Feet

Adjusted net Scope 1 and 2 GHG emissions per unit of EUI-adjusted floor area, performance year:
0.01 MtCO2e / GSF

Scope 3 GHG emissions, performance year:
Emissions
Business travel ---
Commuting ---
Purchased goods and services ---
Capital goods ---
Fuel- and energy-related activities not included in Scope 1 or Scope 2 ---
Waste generated in operations 0 Metric Tons of CO2 Equivalent
Other categories ---

A brief description of the institution’s GHG emissions reduction initiatives, including efforts made during the previous three years:

BU's initiatives to reduce greenhouse gas emissions can be found at the following two websites:
1. BU's Climate Action Plan: http://www.bu.edu/climateactionplan/
2. BU's sustainability@BU Climate Action website: http://www.bu.edu/sustainability/what-were-doing/climate-action


The website URL where information about the programs or initiatives is available:
Additional documentation to support 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 and complete the Data Inquiry Form.