Middlebury College
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
5.28 / 6.00 |
Jack
Byrne Director of Sustainability Integration Environmental Affair |
Electricity use, performance year (report kilowatt-hours):
| kWh | MMBtu | |
| Imported electricity | 17,747,791 Kilowatt-hours | 60,555.46 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 1,772,245 Kilowatt-hours | 6,046.90 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 196,448.80 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
Gross floor area of building space, performance year:
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 220,000 Square feet |
| Healthcare space | 8,500 Square feet |
| Other energy intensive space | 101,279 Square feet |
EUI-adjusted floor area, performance year:
Degree days, performance year:
| Degree days | |
| Heating degree days | 6,514.20 Degree-Days (°F) |
| Cooling degree days | 1,015.30 Degree-Days (°F) |
Total degree days, performance year:
Start and end dates of the performance year (or 3-year period):
| Start date | End date | |
| Performance period | July 1, 2020 | June 30, 2021 |
Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
Electricity use, baseline year (report kWh):
| kWh | MMBtu | |
| Imported electricity | 21,948,432 Kilowatt-hours | 74,888.05 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 5,826 Kilowatt-hours | 19.88 MMBtu |
Stationary fuels and thermal energy, baseline year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 321,614.90 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
Gross floor area of building space, baseline year:
Start and end dates of the baseline year (or 3-year period):
| Start date | End date | |
| Baseline period | July 1, 2007 | June 30, 2008 |
A brief description of when and why the energy consumption baseline was adopted:
We adopted our carbon neutrality by 2016 goal in May, 2007. We use FY 08 as a baseline year.
Source-site ratio for imported electricity:
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.10 MMBtu per square foot | 0.14 MMBtu per square foot |
| Baseline year | 0.18 MMBtu per square foot | 0.24 MMBtu per square foot |
Percentage reduction in total source energy consumption per unit of floor area from baseline:
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:
The Office of Sustainability Integration has a long running program with our Conservation Psychology faculty and lab to research attitudes and behavior related to environmental and energy conservation. We have developed an Eco-Dorm project that focuses on first year residence halls to engage students in activities and incentives to learn about sustainable living and energy conservation practices. this is part of a larger research effort to identify what kinds of activities make the deepest and longest lasting impact in changing behaviors that are more environmentally and energy conscious.
A brief description of energy use standards and controls employed by the institution:
Over half of the buildings (sq. ft.) on campus are on an energy managment system including timers to regulate temperature based on occupancy hours. We maintain a 68 F setpoint in the winter and 75 F in the summer for buildings with air conditioning. We have a thermal comfort policy that requires avoiding central air conditioning in new buildings and use of siting, design, passive cooling measures first.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
In 2012 we installed about $350,000 worth of LED lighting around campus as the first phase of an ongoing project to convert incandescent and CFL lighting around the campus to LED lighting based on the results and performance of the pilot phase. That work has continued since then and currently about 2/3 of the lighting fixtures on campus are LED.
We had also previously replaced about 80 exterior wallpacks on exterior walls (primarily above doors) with LEDs. There are also several LED surface-mount lights that were put in during recent renovations of residential spaces.
Since 2012
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
Our two solar decathlon houses, Self-Reliance and InSite, which are now student housing both incorporate passive solar design in their construction. We have a geothermal system for the Franklin Envirommental Center which is used to provide cooling to the building in the summer.
A brief description of co-generation employed by the institution:
Middlebury's central heating plant produces steam from biomass gasification and natural gas when needed. We co-generate electricity as a bi-product of steam production to heat and cool the main campus primarily from our our combustion of woodchips. We expect the natural gas component will be phased out starting in 2022-23 with renewable natural gas from an anaerobic digester project on a nearby dairy farm in which the College is a partner.
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
We have a longstanding partnership with the Vermont Energy Investment Corp's Efficiency Vermont program which provides financial and technical support to accelerate energy conservation and efficiency efforts. Over the pas 15 years the College has completed including 123 efficiency projects with an annual savings of $942,300 and a simple payback of 2.5 years. For instance, new insulation on a section of underground steam pipes cost $17,000 and reduces heat loss equivalent to $5,800 a year.
Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
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.