*Data for cost savings and carbon emissions reduction are shown below

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2 Overview During the spring 2016 semester, utilizing support from the Student Sustainability Fund, the WUSM Student Sustainability Committee distributed nearly 1,000 LED lightbulbs to medical students. This project aimed at engaging future physicians in sustainability by encouraging this easy first step retro-fitting action. Students were asked to submit a basic profile of their residence status and subsequently given a matching amount of LED lightbulbs. After the distribution event, students received their free light bulbs and have since been retro fitting their homes, apartments, or dorms. The overall cost analysis for a complete retro fit of all 1,000 lightbulbs displayed a savings of over $15,000 for just the first year. Students were actively excited and engaged during this project. This project as a whole has been a large success, as well as been a stepping stone for future projects by fostering a passion for sustainability in the medical student body. This initiative had two main goals: (i) generate tangible action on energy reduction and (ii) promote a more educated and environmentally-aware student body that will lead to lasting change.

3 Introduction Medicine is an ever growing field with an ever growing environmental impact. Finding unique methods to influence medicine and the professionals within it is vital to reduce the impact of emissions and other environmental challenges. Medical students are at a point in their lives where they are still adapting to their future roles in medicine and are open to change. As is the case with many college age and graduate students, this is an important target audience to influence about the importance of sustainability. Residential retro fitting has become a major priority for many people passionate about lower carbon emissions and creating sustainable living environments. To encourage people to actively retro fit and impact greenhouse emissions, Light Up WUSM was created to give students this very opportunity. By creating a process that is free and easy for students to engage in, we hope that sustainability will become a priority for these future physicians. The large majority of medical students live off-campus housing and have the ability to alter their home lifestyle. An important, but easy, connection for students and sustainability is energy and its related carbon emissions. Given these two vital facts, we realized that retro fitting residential light bulbs would be an impactful project. Light Up WUSM sought to engage as many medical students as possible about energy savings by offering free LED light bulbs to replace less energy efficient bulbs. Along with the light bulbs, students were educated about the importance of this process and how much LED lightbulbs can impact cost and emissions. With a realistic goal of approximately 50% engagement, we purchased 1,000 LED light bulbs to distribute amongst the 250 students of the first and second year medical students, estimating 8-10 light bulbs per person on average. Given a full installment of all 1,000 light bulbs, the yearly savings in USD ($) will be $15, and a reduction in carbon emissions of tons of CO2 (*). On an individual basis, students can expect a reduction $100 in their yearly electric costs for a set of 8 LED replacements.

4 *Data for cost savings and carbon emissions reduction are shown below Light Up WUSM Expected Energy and Cost Results Metrics Equation Unit Number of LED Replacements 999 LEDs Hours of Light Use/Day (estimation) 8 hours Average Watt of old light (estimation) 60 W Watt of LED lightbulb 9 W Missours Eletricity Cost ( $/kwh kilowatt-hour use of 60 W/Day (Hours of Light use/day)*(watt)*(1kw/1000w) 0.48 kwh/day kilowatt-hour use of 9 W/Day (Hours of Light use/day)*(watt)*(1kw/1000w) kwh/day Daily cost of (1) 60 W bulb (kilowatt-hour kwh/day)*(electricity Rate $/kwh) 0.05 USD$/Day Daily cost of (1) 9 W bulb (kilowatt-hour kwh/day)*(electricity Rate $/kwh) 0.01 USD$/Day 30 Day Cost of (1) 60W Bulb (Daily cost $/Day)*(30Days) 1.50 USD $ 30 Day Cost of (1) 9W Bulb (Daily cost $/Day)*(30Days) 0.22 USD $ Yearly Cost of (1) 60W Bulb (Daily Cost $/Day)*( Days) USD $ Yearly Cost of (1) 9W Bulb (Daily Cost $/Day)*( Days) 2.73 USD $ Yearly Savings from (1) 60W 9W (Yearly Cost of (1) 60W) - (Yearly Cost of (1) 9W) USD $ Yearly Savings from (8) 60W 9W (Yearly Savings from (1) 60W 9W)*(8) USD $ Yearly Savings from (999) 60W 9W (Yearly Savings from (1) 60W 9W)*(999) USD $ (Assuming fully participation) Missouri Electricity Source 80 % Coal 20 % Nuclear lbs of CO2 produced from Coal 2.07 lbs/kwh lbs of CO2 produced from Nuclear 0.22 lbs/kwh Averaged lbs of CO2 from MO Electricity (lbs of CO2 from Coal)*(.8)+(Lbs of CO2 from Nuclear*(.2) 1.7 lbs/kwh Total kilowatt-hour Savings (kwh 60W - kwh 9W)*(# LEDs)*(Hours of light Use/Day)*( Days) kwh Total CO2 Emissions Yearly Savings (Total kwh Savings kwh)*(avg lbs of CO2 in MO lb/kwh) lbs Yearly CO2 Emissions Savings 253,084 lbs CO tons CO2 Various Sources Hyperlinked within Spreadsheet Calculations. Dollar savings match online source Calculations for CO2 Savings also match online source

5 Current Progress The application for engaging in Light Up WUSM was sent to approximately 250 students of the first and second year medical class. 105 students signed up with the initiative. With each student, we received a basic profile of their residential status including the type of residence and how many light bulbs they are planning to retro fit. With the 105 students signed up, all approximately 800 light bulbs were accounted for and claimed. On May 2 nd, we held the official distribution event within the FLTC building of the medical school. Prior to the event, the application was sent out to students for several weeks. Those that signed up were contacted to come and receive their light bulbs. We also extended the offer for people who wanted to sign up the day of, since we have ~200 unclaimed light bulbs. During the event, over 100 students showed up to receive light bulbs, to sign up, and to learn what made LED light bulbs better than incandescent.

6 Number of Students Each participant received a housingdependent amount of LED lightbulbs. This ranged from some students in dorms needing only 3 light bulbs to students living in a home that received 30 light bulbs. At the end of the event, all 1,000 light bulbs had been claimed as many students signed up during the event. Currently, 900 have been distributed and we are working on personally distributing the remaining Light Up WUSM Light Bulb Distribution Quantities Number of LED Light Bulbs By tracking the residence status, even to the point of unit number in apartments, we will be able to gain a topographical sense of the impact of this project. By mapping out the apartments and houses that these bulbs go to, students can see the spatial result of this project. As shown below, the large majority of the bulbs went to apartments. However, nearly a fourth went to houses, which had large quantities as shown on the histogram above with numbers greater than 20.

7 A very important aspect of this project is the actual installation of the light bulbs. If the students simply took the bulbs and had them sit in the closet, there would be no impact on energy efficiency. Thus, 3 weeks after the distribution event, a post survey was sent out to all who received light bulbs asking whether or not they had installed the new LED light bulbs. The results below show that the large majority have begun to or completed installation.

8 Expense Report The Student Sustainability Fund (SSF) awarded us $2, for the purchase of 1000 light bulbs. We originally quoted the price of 1,000 light bulbs to cost $2.83 per light bulb, leading to the awarded amount. However, thanks to further discussion with the distributor, Batteries Plus, Inc., we were able to get an even further reduced price on the LED light bulbs of $2.33 per light bulb. This lead to a total of $2, that was purchased with through the Washington University Office of Sustainability. This will serve to explain to SSF why not the full amount of the award was used. Project Name: Light Up WUSM Project Description: Distributing LED light bulbs to WASH U medical students for residential retro-fitting Contact Person: David Ebertz ( ) (debertz@wustl.edu) Date: 3/6/2016 Item Code* Item Category* Item Description Number of Units Cost per Unit Total Cost 3487 Supplies A19 9W LED Light Bulbs 334 $6.99 $2, $0.00 Total

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11 Future Plans The most important aspect of this project s success is the full installation of all the distributed light bulbs. Given that there is still a small portion of the class that has not installed them, or has not installed all of them, we must tackle this in the upcoming months. Personal communication with the few people will be used to pressure students into installing the light bulbs. We will make sure to communicate the importance of this and how it will began to save them energy usage and cost immediately. Also, we will reach out to anyone that may have had issues with installation. So far, we have only had one complaint as shown below with student who had trouble with their ceiling fan light bulbs. (However, they still managed and got them installed!) Overall, Light Up WUSM can serve as a stepping stone for these students to see the impact and importance of energy reduction. Further programs or initiatives will build off of this stepping stone and further connect medical students with a passion for sustainability. By influencing students during school, Light Up WUSM inspired future physician leaders to care about sustainability.

12 This initiative will build upon itself in future semesters by further retrofitting apartments and residences near WUSM. With these new LED light bulbs installed, many students will leave them installed in the residences after their 4 years here. In the following years, if we plan to do a follow up Light Up WUSM, the amount of LEDs needed will start to decline as the residences will start to accumulate these modifications. This will be possible by tracking not only the residences, but the individual unit numbers from the students. However, this is not the full potential. As this passion in the student body continues to grow, a future-long term project (Green Up WUSM) can continue to develop as we move towards other retrofit modifications, such as low-flow shower heads, clothes lines, and even solar panels. This movement will start to make an impact on the students here at WUSM and support better residential retro-fitting. This can then even extend to the on campus housing and study areas.

13 As stated, this initiative has two separate purposes: (i) generate tangible action on energy reduction and (ii) promote a more educated and environmentally-aware student body that will lead to lasting change. With the overwhelming success of Light Up WUSM and the overall positive feedback from many students, we are confident that this is merely a first step towards making Washington University School of Medicine a model of sustainably minded medical students.