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  • AASHE-STARS

The Sustainability Tracking, Assessment & Rating System™ (STARS) is a transparent, self-reporting framework for colleges and universities to measure their sustainability performance.

Overall Rating Silver
Overall Score 58.08
Liaison Kristi Wiedemann
Submission Date March 13, 2015
Executive Letter Download

STARS v2.0

Princeton University
IN-3: Innovation 3

Status Score Responsible Party
Complete 1.00 / 1.00 Shana Weber
Director
Office of Sustainability
"---" indicates that no data was submitted for this field

Title or keywords related to the innovative policy, practice, program, or outcome:
Carbon Dioxide Shadow Pricing Tool - An Internal Carbon "Tax"

A brief description of the innovative policy, practice, program, or outcome:

When evaluating whether to undertake a more energy efficient design or technology, the Facilities Department calculates the net present value (NPV) of all the costs associated with the proposed efficient system over the course of its estimated life, and compares this value to the NPV of the baseline system. The university will usually select the system with the lowest NPV. The costs in the NPV analysis include the capital cost to install the system, energy cost, maintenance costs and the CO2 tax. By applying this theoretical “tax,” the University places a monetary value on environmental impact, which in turn increases the “savings” by undertaking the efficient design. To date, this concept has led Princeton to install a geothermal system at Lakeside Graduate Apartments, a decision that would not have been made without this shadow-pricing tool.


A brief description of any positive measurable outcomes associated with the innovation (if not reported above):
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A letter of affirmation from an individual with relevant expertise:
Which of the following STARS subcategories does the innovation most closely relate to? (Select all that apply up to a maximum of five):
Yes or No
Curriculum ---
Research ---
Campus Engagement ---
Public Engagement ---
Air & Climate Yes
Buildings Yes
Dining Services ---
Energy ---
Grounds ---
Purchasing ---
Transportation ---
Waste ---
Water ---
Coordination, Planning & Governance ---
Diversity & Affordability ---
Health, Wellbeing & Work ---
Investment ---

Other topic(s) that the innovation relates to that are not listed above:
---

The website URL where information about the innovation is available:
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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 and complete the Data Inquiry Form.