1. Energy Future @ Carleton By Richard Strong, Director of Facilities

2. Minnesota Fuel Mix for Electricity

3. Carleton Energy Use 1987-2003

6. Cost for Energy 1900-2002

7. Cost per CCF of Natural Gas

8. Total Annual Cost of Natural Gas

9. Monthly Electrical Usage

10. Summer Daily Electrical Usage

11. Winter Daily Electrical Usage

12. Cost per KWH of Electricity

13. Annual Cost for Electricity

14. Total Energy Costs

15. Carleton Emissions Survey Total GHG emissions have increased by nearly 40% since 1990. Emissions per student, increased from around 8 metric tons/student to almost 12. Electricity emissions increased even when additional building area was accounted for.

16. Emissions per Student

17. Emissions per Building Area

18. Heating and Electrical Emissions per Building Area

19. Carleton’s Emissions Sources

20. Transportation GHG Emissions Breakdown (in metric tons eCO2)

21. If We Believe This 2006

22. Or If We Believe This

23. And If This Happens Source: United Nations, World Population Prospects, The 1998 Revision; and estimates by the Population Reference Bureau. World Population Growth, 1750–2150

24. And This Happens at the Same Time

25. And This… Should the U.S. Fear Rise of China, India? AMERICANS are having another Sputnik moment: One of those periodic alarms about some foreign technological and economic menace. It was the Soviets in the 1950s and early 1960s, the Germans and the Japanese in the 1970s and 1980s, and now it's the Chinese and the Indians. -Robert Samuelson, The Business Times, 26 May 2005

26. And If Economics Works in This Case 20062023 17 Years

27. Energy Transition Plan We need a transition plan for 1-15 year time period, 2006-2020 Phase One – Conservation/Reduction Phase Two – Efficiency/Conversion Phase Three – Transition

28. Phase 1: 2006-09 Conservation Lower temperature in the winter (68 0 F)/higher in the summer (78 0 F) Manage plug load Good management practices Calibration of system Building new buildings at 40,000 BTU/Sqft rather than the 98,000 BTU/Sqft average Change lighting sources (same light for less energy) CFL/Super 8s

29. Phase 2: 2010-13 Efficiencies/Conversion Hedging on energy markets Interruptible electric energy sources Additional Building Insulation Metering and Building controls Double/Triple pain windows Co-Generation (on campus, within the community) Additional wind turbines interconnect to the campus Commissioning of systems

30. Phase 3: 2014-2020 Year Transition Rebuilding building systems Self generation of energy Alternate fuels –Hydrogen –Bio-Mass –Ethanol –Solar –Wind –Bio-Diesel

31. Common Energy Conservation Energy Paybacks 1-2 YearsSeal Air Leaks (Looking at this) Seal Ducts (Looking at this) Programmable Thermostat (Building Automation System) Insulated Water Heaters (We don’t have Water Heaters) Heating Tune up (Commissioning of Science Buildings) Efficient Shower Heads (Start Program) 2-5 YearsFlooring Insulation (Not Possible) 3-7 YearsCeiling Insulation (Change with re-roofing) 4-10 Years Storm Windows (Have completed) 5-20 YearsFurnace Replacement (When they reach their life cycle) 6-12 YearsWall Insulation (Difficult) 15-20 YearsWindow Replacement

32. Energy Proposals CO2 Detectors plus Drives at: Recreation Center, West Gym, Cowling Gym, Hullings and Library Commissioning Studies at: Hullings, Mudd, Olin, Library, and Leighton Pools Covers at: Cowling and West Gym Metering of all Buildings Lighting Retofits at: Recreation Center, West and Cowling Gym Steam Trap Replacement

33. Three Challenges for the Next 15 Years Where to prioritize our efforts in short run When to invest in newer technologies –Opportunity to save against future price increases vs. ongoing cost reductions and improved efficiencies as technologies mature Building Collaborations that benefit Carleton and expand our market and economic base – eg. Other colleges or organizations in Northfield or beyond.