Overall Rating Silver
Overall Score 53.67
Liaison Stephen Ellis
Submission Date Oct. 7, 2021

STARS v2.2

Boston University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 3.66 / 6.00 Stephen Ellis
Director, Data Analytics
BU Sustainability
"---" indicates that no data was submitted for this field

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 189,934,511 Kilowatt-hours 648,056.55 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 0 Kilowatt-hours 0 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 810,705 MMBtu
Imported steam, hot water, and/or chilled water 154,829 MMBtu

Total site energy consumption, performance year:
1,613,590.55 MMBtu

Gross floor area of building space, performance year:
15,221,297 Gross Square Feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 672,331.80 Square Feet
Healthcare space 70,684.20 Square Feet
Other energy intensive space 226,335.50 Square Feet

EUI-adjusted floor area, performance year:
16,933,664.50 Gross Square Feet

Degree days, performance year:
Degree days
Heating degree days 5,084 Degree-Days (°F)
Cooling degree days 988 Degree-Days (°F)

Total degree days, performance year:
6,072 Degree-Days (°F)

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period July 1, 2019 June 30, 2020

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
15.69 Btu / GSF / Degree-Day (°F)

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 200,415,800 Kilowatt-hours 683,818.71 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 0 Kilowatt-hours 0 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 932,112 MMBtu
Imported steam, hot water, and/or chilled water 178,326 MMBtu

Total site energy consumption, baseline year:
1,794,256.71 MMBtu

Gross floor area of building space, baseline year:
13,426,870 Gross Square Feet

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period July 1, 2005 June 30, 2006

A brief description of when and why the energy consumption baseline was adopted:

For consistency, Boston University uses a Fiscal Year 2006 baseline for its sustainability metrics.


Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.11 MMBtu / GSF 0.19 MMBtu / GSF
Baseline year 0.13 MMBtu / GSF 0.24 MMBtu / GSF

Percentage reduction in total source energy consumption per unit of floor area from baseline:
18.82

Documentation to support the performance year energy consumption figures reported above:
---

A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:

Campus Planning & Operations (CPO) works to achieve a balance between comfort and efficiency when installing lighting retrofits and advanced HVAC technology. The University purchases its electricity from third party suppliers and the local distribution company, Eversource Energy. Through Eversource, CPO has taken advantage of incentive programs to help fund and encourage the replacement of aging, inefficient equipment with new energy-saving technology. For example, occupancy sensors, which can potentially save about 30% of energy for lighting, were installed at 33 Harry Agganis Way, FitRec, Walter Brown Arena, Mugar Library, in the garages at both 700 and 730–750 Comm. Ave., and the College of Arts & Sciences.


A brief description of energy use standards and controls employed by the institution:

Seven buildings employ unoccupied modes in their Building Management Systems. BU has Schneider and Siemens BAS systems. 25% of all building space (square footage) is equipped with schedules.


A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:

LED lighting has been and continues to be a major part of the University's energy efficiency program with new LED fixtures being installed daily across campus.


A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:

N/A


A brief description of co-generation employed by the institution:

N/A


A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:

Buildings with existing building energy management systems (EMS) undergo independent 3rd-party engineering studies to determine and quantify savings related to introducing setbacks and controls, occupancy schedules, VFDs, efficient lighting, etc. that are connected to the EMS to be monitored and controlled for optimization.


Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
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This represents FY2020 BU Metrics.

Boston University's approach and progress on energy efficiency can be found on the following websites:
https://www.bu.edu/sustainability/projects/improving-energy-efficiency/
http://www.bu.edu/facilities/what-we-do/energy/

Calculating energy, water, and greenhouse gas metrics involves an ongoing process of validation. This process resulted in a refinement of our data from 2005 through the present.

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.