Energy use at a Glance at Carnegie Mellon University

1. Energy use at a Glance at Carnegie Mellon University Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

2. Interesting Facts About Energy Use • Annual energy cost is roughly equivalent to 25 assistant professors, plus 25 associate professors, plus 50 full tenured professors • Campus facilities consume the equivalent of 50,000,000 pounds of coal every year, or about 6000 pounds per student per year • Energy expenditures exceed that of annual capital renewal • For every tuition dollar in revenue, five cents goes to energy expense • Water used on campus is equivalent to filling the UC lap pool, daily • GHG (greenhouse gas) emissions are approximately 110,000 tons every year, or about 25,000 pounds per student per year • It takes 75,000 trees to print the Sunday edition of the NY Times! • How much do you think we spend on energy annually? *From Fiscal 2002 records September 13, 2014 slide 2;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

3. Myths and Truths • MYTH. Leaving a light on uses less energy than turning it off and on several times. TRUTH. Leaving an incandescent light on actually uses more energy than turning it on and off as needed. • MYTH. Keeping your thermostat at the same temperature day and night uses less energy than turning it down at night and heating your home up again in the morning. TRUTH. It takes less energy to warm up a cold home in the morning than it does to maintain a constant temperature throughout the night. • MYTH. Setting your air conditioner thermostat to its lowest setting when you start it will cool your home faster. TRUTH. This won’t cool your home any faster, it’ll just use more energy. September 13, 2014 slide 3;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

4. Myths and Truths cont. • MYTH. Compact fluorescent lights are those glaring, humming, flickering tubes seen in some offices. TRUTH. They screw into the same light socket and produce the same quality of light as an incandescent bulb; they use 70% less electricity and lasts up to 10 time longer. • MYTH. It is more energy efficient to leave your computer running when not in use. TRUTH. Any time you turn your computer off, it will save energy; many computers have energy-saving “sleep” features that save energy when the computer is not being used. September 13, 2014 slide 4;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

5. Campus Energy Use Carnegie Mellon University consumes annually: • 91,000,000 kWh of Electricity • 350,000 Mlbs of Steam • 45,000 Mcf of Natural Gas • 136,000 kGal of Water • This equates to about $9.5 in annual utility bills. • If the university reduced energy costs by 20%, how might it be allocated. *From Fiscal 2003 records September 13, 2014 slide 5;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

6. Why Conserve Energy? • Environmental Quality • reduce global warming and acid rain • Economic Competitiveness • reduce resource costs and create jobs • Energy Security • reduce oil imports and balance of payments September 13, 2014 slide 6;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

7. Energy Quiz 1) A 1/4 inch gap at the bottom of a standard size door results in as much energy loss as...     a) A 3 inch by 3 inch hole in the wall    b) Using your hair dryer for 45 minutes    c) Setting your thermostat 10 degrees higher     d) Using a blender to make fruit drinks for 20 people 2) A single inch of insulation has the "heat stopping" ability of...    a) 16 inches of solid concrete    b) 16 inches of solid wood    c) 16 inches of solid steel    d) A single slice of cheddar cheese 3) Of the following options, I can save the most on my home energy bill by...    a) Using the fireplace for heating    b) Letting my hair air dry rather than blowing it dry    c) Installing a programmable thermostat    d) Eating dinner every night by candlelight September 13, 2014 slide 7;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

8. Energy Quiz cont. • 4) One of the least efficient users of energy is...    a) The television    b) An incandescent light bulb    c) The microwave    d) My spouse • 5) What consumes the most energy in your home...    a) Heating    b) Water heater    c) Refrigerator    d) Electric train set • 6) The term "Btu" stands for...    a) Baseline temperature unit    b) British thermal unit    c) Bolivian transformer utility    d) Beverage time utensil • Answers: 1- a, 2- a, 3- c, 4- b, 5- a, 6- b. September 13, 2014 slide 8;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

9. Capital Investment Projects • LEED certified new construction • Energy savings performance contract • Laboratories for the 21st Century • Metering/ sub-metering of building utility use • Web access to building utility data • Alternative fuel vehicles & refueling station • Green roofs September 13, 2014 slide 9;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

10. Behavior/Institutional Change • Sleep is Good campaign…Power Naps • Turn-off lights when not in room • Turn up/down thermostat a couple of degrees • Climate neutral campus • Net-zero energy buildings • Full-cost accounting systems • Survey question: Green Power Challenge September 13, 2014 slide 10;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

11. Financial Aspects of Conservation • First, what are the estimated capital (and recurring) costs • Second, what are the projected annual utility bill savings • Then, simple payback=implementation costs/utility savings • Other financial approaches are ROI or Present Value; these are preferred September 13, 2014 slide 11;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

12. Potential Student Projects • ESPC liaison • Energy Fest Planner • University Challenge(s) • Green Practices communications • Space lighting & temperature survey • Residence dorm room energy consumption • Laboratory fume hood energy use & savings • Others September 13, 2014 slide 12;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!

13. If Interested in a Project • Contact Brad Hochberg, energy manager, at bradh@cmu.edu • Thank you September 13, 2014 slide 13;Every Dollar Spent on Energy…is One Less Dollar Spent on Education!