| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 47.51 |
| Liaison | Mike Evans |
| Submission Date | Feb. 2, 2016 |
| Executive Letter | Download |
Williams College
OP-8: Building Energy Consumption
| Status | Score | Responsible Party |
|---|---|---|
|
2.70 / 6.00 |
Amy
Johns Director Zilkha Center for Environmental Initiatives |
Total building energy consumption, all sources (transportation fuels excluded):
| Performance Year | Baseline Year | |
| Total building energy consumption | 369,439 MMBtu | 427,927 MMBtu |
Purchased electricity and steam:
| Performance Year | Baseline Year | |
| Grid-purchased electricity | 124,300 MMBtu | 139,546 MMBtu |
| District steam/hot water | 0 MMBtu | 0 MMBtu |
Gross floor area of building space::
| Performance Year | Baseline Year | |
| Gross floor area | 2,491,400 Gross square feet | 2,298,096 Gross square feet |
Floor area of energy intensive space, performance year::
| Floor Area | |
| Laboratory space | 258,401 Square feet |
| Healthcare space | 7,016 Square feet |
| Other energy intensive space |
Degree days, performance year (base 65 °F)::
| Degree days (see help icon above) | |
| Heating degree days | 7,756 |
| Cooling degree days | 296 |
Source-site ratios::
| Source-Site Ratio (see help icon above) | |
| Grid-purchased electricity | 3.14 |
| District steam/hot water | 1.20 |
Start and end dates of the performance year and baseline year (or 3-year periods)::
| Start Date | End Date | |
| Performance Year | July 1, 2013 | June 30, 2014 |
| Baseline Year | July 1, 2004 | June 30, 2005 |
A brief description of when and why the building energy consumption baseline was adopted:
A brief description of any building temperature standards employed by the institution:
Williams has a campus wide building management system. One of the many things that the BMS is used for is turning buildings to unoccupied mode at appropriate times, with both reduced temperatures and reduced ventilation rates.
A brief description of any light emitting diode (LED) lighting employed by the institution:
Williams has installed indoor LED lighting in several campus buildings, often in high locations where the additional longevity of LED bulbs will make for easier maintenance. We have also installed LED walk way lights in one location. They are located in parking lot on Spring St, Lasell gym track, and exit lights.
A brief description of any occupancy and/or vacancy sensors employed by the institution:
Occupancy sensors that turn off lights (and ventilation) have been installed in most buildings across campus. The particular technology used is generally a dual sensor that responds to both motion and sound.
A brief description of any passive solar heating employed by the institution:
A brief description of any ground-source heat pumps employed by the institution:
A brief description of any cogeneration technologies employed by the institution:
In 2002, Williams replaced one of the three boilers at the heating plant with a boiler capable of supporting cogeneration, and installed a steam turbine/generator at the same time.
A brief description of any building recommissioning or retrofit program employed by the institution:
A brief description of any energy metering and management systems employed by the institution:
Williams has a building management system that is connected to most buildings on campus. The BMS allows for remote monitoring of building conditions and energy use, and allows staff to control temperature, ventilation and humidity set points remotely. Humidity control only exists in limited necessary spaces such as the art museum, science center, and music building.
A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:
A brief description of any energy-efficient landscape design initiatives employed by the institution:
A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
Several years ago, Williams installed vending misers on several campus vending machines. As vending machines are replaced, they are replaced with Energy-Star machines that have built-in shut down capabilities.
A brief description of other energy conservation and efficiency initiatives employed by the institution:
The website URL where information about the institution’s energy conservation and efficiency initiatives is available:
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.