PPS Energy Management Program. Report to Board of Education June 4, 2012

Transcription

1 PPS Energy Management Program Report to Board of Education June 4, 2012

2 Overview of Presentation Brief Description of Terms Brief Program Review Program Timeline Results Challenges Comments Questions

3 Brief Description of Terms Cost Avoidance Difference between baseline month or year cost and program month or year cost (adjusted for weather and any other significant factors -- in our case, construction and demolition) ECAP Industry standard software that calculates cost avoidance. All utility bills for the district are entered into this database EMS Energy Management System Guidelines Specific expectations for energy use. Adopted by the Board in June, HVAC Heating, Ventilation, and Air Conditioning

4 Program Review Maintain Comfort & Safety in Occupied Areas Different protocols for Occupied vs. Unoccupied periods Monitor building use to make certain comfort is maintained during occupancy Monitor building use to make certain equipment (HVAC, lights, computers, copiers, etc.) run times correspond to occupancy Eliminate Energy Waste and Save Dollars on Utility Costs Implement Guidelines Change behaviors of all staff and end-users of our facilities Track and analyze consumption

5 Program Timeline Spring 2009 Initiated Four-year performance contract with EEI Summer 2011 Continue ECAP adjustments. for new construction Fall / Winter 2011/12 Monitor and adjust EMS Weather Challenges Summer 2009 ECAP Data entered Adopted District Guidelines Winter 2010/11 Complete install of EMS and begin monitoring. Adjustment of ECAP based on Simulation Programming Summer 2012 Extend EMS areas of control to include boilers Fall 2009 Building staff awareness & expectations Fall 2010 Install EMS and refine ECAP Simulation Fall / Winter Fine tune building management to extract maximum savings Winter 2009/10 Discovery & recognition of need to update control systems throughout district Summer 2010 Control Systems Update Procurement Spring 2013 Contract ends Six months deferred

6 Program Timeline Spring 2009 Initiated Four-year performance contract with EEI Summer 2011 Continue ECAP adjustments. for new construction Fall / Winter 2011/12 Monitor and adjust EMS Weather Challenges Summer 2009 ECAP Data entered Adopted District Guidelines Winter 2010/11 Complete install of EMS and begin monitoring. Adjustment of ECAP based on Simulation Programming Summer 2012 Extend EMS areas of control to include boilers Fall 2009 Building staff awareness & expectations Fall 2010 Install EMS and refine ECAP Simulation Fall / Winter Fine tune building management to extract maximum savings Winter 2009/10 Discovery & recognition of need to update control systems throughout district Summer 2010 Control Systems Update Procurement Spring 2013 Contract ends Six months deferred

7 Mean Temperatures (2010/ /12)

8 Cost Avoidance 11/11 3/12 Total District Savings = $315,307 $105,351 $209,956 Energy Program Weather

9 Savings and Program Costs Total District Savings = $829,162 $212,462 $616,700 EEI Contract / Energy Manager Actual Savings

10 Monthly CA Percentage January 4.2% 16.1% 21.1% February 15.1% 19.5% 22.0% March 13.8% 15.6% 31.4% April 2.3% 10.3% 12.1% May 7.5% 17.0% 9.6% June 13.4% 20.9% 12.5% July 28.3% 18.1% 15.8% August 22.1% 12.0% 18.0% September 11.0% 12.3% 22.0% October (2.3%) 17.5% 24.4% November 1.8% 14.0% 15.9% December 15.6% 21.8% 20.7%

11 Annual Savings Comparison 25.0% 20.0% 15.0% 10.0% April - March '10 April - March '11 April - March '12 5.0% 0.0% Savings Percentage

12 Cumulative Greenhouse Gas Reduction Equivalency 1,195Passenger cars not driven for one year 170,322 Tree seedlings grown for 10 years

13 Challenges Construction Requires constant data adjustments Burn-in periods, glitches, etc. Controls Learning Curve System adjustments Scheduling Building Use Metering Individually metering every building is cost prohibitive Complicates data analysis Compliance An ongoing challenge

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17 Comments Seems Simple But is indeed very complicated Reports Are Easy But virtually all require interpretation, and a broad understanding of context Cultural Traps Efficiency is not the same as economy Technology presents challenges for unoccupied periods (Vampire Electronics) Energy saving devices still require human monitoring

18 Questions