Energy Conservation Efforts

Transcription

1 Hennepin County Property Services Energy Conservation Efforts MEPC Presentation September 2010

2 HENNEPIN COUNTY PROPERTY SERVICES DEPARTMENT MONTHLY ENERGY COSTS $1,200,000 $1,000,000 Cold 2009 October $800,000 $600, $400,000 Mild 2010 Spring Erratic 2010 May Mild 2009 Summer Warm 2009 November $200,000 $0 January February March April May June July August September October November December

3 HENNEPIN COUNTY PROPERTY SERVICES DEPARTMENT MONTHLY ENERGY USE 70,000 60,000 50,000 MMBtu's 40,000 30,000 Cold 2009 October Mild 2010 Spring Mild 2009 Summer 20,000 Erratic 2010 May Warm 2009 November 10,000 0 January February March April May June July August September October November December

4 HENNEPIN COUNTY PROPERTY SERVICES DEPARTMENT Percent Change in Energy Use from 2008 to 2009 per Building Percent Changed

5 HENNEPIN COUNTY PROPERTY SERVICES DEPARTMENT Percent Change in Cost from per Building Percent Changed

6 500,000 HENNEPIN COUNTY PROPERTY SERVICES DEPARTMENT Yearly Energy use in MMBtu's 453, , ,000 MMBTUs 300, , , Year

7 Energy Savings of 28,800 MMBtu s

8 What is a MMBTU? BTU stands for British Thermal Units MM indicates 1 million 1 BTU is the amount of energy needed to raise 1 lb of water 1 degree Fahrenheit A way to combine energy sources into one equivalent unit of measurement

9 HENNEPIN COUNTY PROPERTY SERVICES DEPARTMENT - YEARLY ENERGY COSTS $10,000,000 $9,314,159 $8,376,566 $8,000,000 $6,000,000 Dollars $4,000,000 $2,000,000 $ Year 2009

10 Cost Savings of $960,000

11 Hennergy Awards The Hennepin County Property Services Department - Facilities Management Division held their Third Annual Hennergy Awards Program Wednesday, May 26, 2010 The program provides recognition for excellence in managing energy in Hennepin County buildings under Property Services This year s winners were recognized for the reduction in energy consumption in 2009 as compared to that in 2008

12 Hennergy Awards CATEGORY WINNER Small Building Electrical Large Building Electrical Small Building Natural Gas Large Building Natural Gas Steam & Chilled Water New awards: Best Energy Performance by a Small Library Best 3 Year Energy Performance Best 3 Year Energy Performance Brooklyn Park Transfer Station Brookdale Regional Center Environmental Services Building Ridgedale Regional Center Hennepin County Government Center Sumner Library Hennepin County Government Center Southdale Regional Center

13 How was this Accomplished? URN IT OFF! URN IT DOWN! UNE IT UP! RACK IT!

14 Sumner Library Best Energy Performance by a Small Library 30% Reduction in energy use 23% Energy cost savings - $8,910 Reduced $4.12/sf to $2.89/sf Determined an energy hog CEE energy study Temperature setpoints Reprogrammed air handling units Dedicated building engineer

15 Executive Energy Profile MMBtu s Use Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Month

16 Hennepin County Government Center Best 3 Year Energy Performance Saved over 1,000,000 kwh last year More than 1800 Chicago used last year Reduction of 6.7% in electricity Recommissioning efforts New variable frequency drives Fine tuning equipment schedules

17 Executive Energy Profile 14K 12K MMBtu s Use 10K 8K 6K K 2K 0K Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Month

18 Brookdale Regional Center Large Building Electrical Overall energy reduction of 19% Cost savings of 19% - $51,286 Corrected sensor issues Reduced equipment run times Retrofitted with energy efficient lamps

19 Executive Energy Profile MMBtu s Use Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Month

20 Property Services Department Initiatives Cool County Initiative overall county goal to reduce carbon emissions by 80% by the year Building Recommissioning Building Lighting Retrofits Building Automation System Upgrades

21 New Libraries Exceed existing energy code by 30% by using: Geothermal heating and cooling Daylighting Automated lighting controls Premium efficiency motors Demand ventilation

22 Geothermal Test Sites New Construction Plymouth Library In ground vertical wells Maple Grove Library Closed loop in pond Renovation Nokomis Library In ground vertical wells

23 Green Roofs Central Library 19,300 sq. ft. Plymouth Library 11,220 sq. ft. Maple Grove Library - ~40,000 sq. ft.

24 Daytime Janitorial Estimated to save $100,000 annually in energy costs Over 2,000,000 kwh in electrical consumption Almost 1,700 tons of carbon emissions Equal to 325 cars or 150 homes

25 VendingMiser Bulk Buy Statewide campaign by MN CERTs. Installed 40 Vending Misers across the county Initial cost savings of $1,200 with bulk buy Estimated energy savings of $1,500 annually Payback of under 4 years

26 EECBG Energy Efficiency and Conservation Block Grant Central Library Recommissioning HERC Lighting Retrofits HCMC Recommissioning Property Services Lighting Retrofits Transportation Lighting Retrofits

27 Outcomes Total grant amount is $2,640,600 Estimated annual savings is $1,900,000 Estimated savings of $260,000 annually in Property Services operating budget

28 Cool County Impacts Goal of EECBG is to reduce GHG emissions by 10,000 tons of CO 2 annually. This will reduce Hennepin County s overall GHG emissions by 3%.

29 Facility Cost Share Grant 50/50 ARRA Grant up to $150,000 $350,000 project with $50,000 in rebates ARRA funding through OES HSB Lighting retrofit and controls upgrade Retrofit 3-lamp to 2-lamp fixture Replace outdated control panels Install daylighting and occupancy sensors

30 Fixture Retrofit Retrofit is all done within original housing. Decreases glare and increases light displacement (reducing cave effect)

31 Questions? Leah Hiniker, Energy Manager