| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 66.38 |
| Liaison | Olivia Shehan |
| Submission Date | Nov. 13, 2018 |
| Executive Letter | Download |
Wellesley College
OP-5: Building Energy Consumption
| Status | Score | Responsible Party |
|---|---|---|
|
2.42 / 6.00 |
Dorothea
Von Herder Sustainability Coordinator Facilties |
"---"
indicates that no data was submitted for this field
Part 1
This credit is based on energy inputs from offsite sources and electricity produced by onsite renewables. When the institution purchases one fuel and uses it to produce heat and/or power, you should enter only what is purchased. For example, if the institution purchases natural gas to fuel a CHP system and produce steam and electricity, only the purchased natural gas should be reported.
| Performance Year | Baseline Year | |
| Grid-purchased electricity | 29,381.50 MMBtu | 2,331 MMBtu |
| Electricity from on-site renewables | 36.76 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) | 473,759.05 MMBtu | 577,055.55 MMBtu |
| Total | 503,177.31 MMBtu | 579,386.55 MMBtu |
Start and end dates of the performance year and baseline year (or 3-year periods):
| Start Date | End Date | |
| Performance Year | Jan. 1, 2017 | Dec. 31, 2017 |
| Baseline Year | July 1, 2006 | June 30, 2006 |
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):
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Gross floor area of building space:
| Performance Year | Baseline Year | |
| Gross floor area of building space | 2,596,103 Gross square feet | 2,462,855 Gross square feet |
Source-site ratio for grid-purchased electricity:
3.14
Total building energy consumption per unit of floor area:
| Performance Year | Baseline Year | |
| Site energy | 0.19 MMBtu per square foot | 0.24 MMBtu per square foot |
| Source energy | 0.22 MMBtu per square foot | 0.24 MMBtu per square foot |
Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:
8.11
Part 2
| Degree days (see help icon above) | |
| Heating degree days | 5,942 Degree-Days (°F) |
| Cooling degree days | 654 Degree-Days (°F) |
Floor area of energy intensive space, performance year:
| Floor Area | |
| Laboratory space | 69,206 Square feet |
| Healthcare space | 4,900 Square feet |
| Other energy intensive space |
EUI-adjusted floor area, performance year:
2,791,749
Gross square feet
Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
27.33
Btu / GSF / Degree-Day (°F)
Optional Fields
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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):
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A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):
During winter session when fewer students remain on campus for optional January classes, it is mandatory for leaving students to close the blinds and lower the thermostat/ turn off heat in their dorm rooms as the remaining students are moved into one complex such that significantly fewer buildings must remain heated. All appliances must also be unplugged during this time. This policy is a collaborative effort between the Office of Sustainability and Facilities, including Custodial Services and Residential Life.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
The Office of Sustainability has made sure to continue to replace lamps in the Wellesley College lanterns with high efficiency LED lamps, which reduce electrical consumption by over 50%. In addition, student room lights are now being replaced with LEDs as well, which will lower energy consumption from 54 watts to 22 watts per fixture. The quality of the lights also improve with these renovations.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
Our college employs green roofs over parts of our campus center, Alumnae Hall, and our Water Treatment Vault, which assist in passive cooling.
A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):
The college has the ability to island if necessary, but we have agreed to purchase 5% of our electrical energy as renewable through the town. We do use the waste heat from cogeneration for electricity, to produce steam, domestic hot water, and chill water through absorption chillers. Cogen utilizes almost 50% of total energy from the performance year, using natural gas, which is the cleanest burning fossil fuel. Further, the campus utilizes natural gas in its boilers and has significantly reduced its use of number 6 oil.
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):
Where possible in new buildings energy efficient appliances and systems are put in place.
The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
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Data source(s) and notes about the submission:
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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.