Overall Rating Gold - expired
Overall Score 65.59
Liaison Victor Udo
Submission Date Sept. 23, 2019
Executive Letter Download

STARS v2.1

Bucknell University
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 3.29 / 6.00 Stephen Durfee
Energy Manager
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 16,420 MMBtu 18,977 MMBtu
Electricity from on-site renewables 58 MMBtu 0 MMBtu
District steam/hot water (sourced from offsite) 0 MMBtu 0 MMBtu
Energy from all other sources (e.g., natural gas, fuel oil, propane/LPG, district chilled water, coal/coke, biomass) 521,588 MMBtu 559,637 MMBtu
Total 538,066 MMBtu 578,614 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2017 June 30, 2018
Baseline Year July 1, 2007 June 30, 2008

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

The baseline year corresponds to the baseline year of the University's climate action plan.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 2,989,249 Gross Square Feet 2,599,344 Gross Square Feet

Source-site ratio for grid-purchased electricity:

Total building energy consumption per unit of floor area:
Performance Year Baseline Year
Site energy 0.18 MMBtu / GSF 0.22 MMBtu / GSF
Source energy 0.19 MMBtu / GSF 0.24 MMBtu / GSF

Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 6,090 Degree-Days (°F)
Cooling degree days 698 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 127,500 Square Feet
Healthcare space 4,900 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
3,344,349 Gross Square Feet

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

Documentation (e.g. spreadsheet or utility records) 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 (e.g. outreach and education efforts):

Campus Energy Manager runs dorm energy competitions as well as giving class talks each semester. Sustainable office program engages community members.

A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):

temperature standards, occupancy sensors, night/weekend setback, automated space scheduling (from campus scheduling system). Fault detection & diagnostic system for major buildings. On-going capital program to replace and retrofit HVAC systems and equipment.

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

29,000 fluorescent lamps replaced with LED over past 2 years.

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

passive solar heating that provides hot water needs for small residential unit

A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):

Bucknell operates a highly efficient natural gas co-gen plant that was installed in 1998. The plant reduced greenhouse gas emissions by 40%. 6.0 MW combined cycle CHP plant.

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment and systems with high efficiency alternatives (e.g. building re-commissioning or retrofit programs):

Occupancy based temperature controls are being installed in dorm rooms each year. The lights in the fieldhouse were retrofitted with LED lights as well as the lights in the performing arts building. The kitchen hoods in the dining areas were retrofitted with a system that allows the fan speed to adjust accordingly to usage. Additionally, the HVAC system in a science building was replaced and heating pumps in the gymnasium were converted to VFDs instead of constant speed drives. Another building was added to the buildings on campus that are automatically controlled so that it can be scheduled when occupied.

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 or simply email your inquiry to stars@aashe.org.