Post on 03-Jan-2016
Meeting the 10% Conservation Goal
Jennifer L. Gorter, PE, CEMFairfax County GovernmentFacilities Management Department (FMD)
April 11, 2008
FMD’s Energy Responsibilities
• FMD is responsible for managing:– Annual utility costs of approximately $9 million– 170+ facilities totaling approximately 8 million SF
Note: This does not include facilities operated by
Parks, Schools, Housing or Public Works
FMD’s Energy Goal is to reduce energy consumption and energy costs
Reduce Energy Consumption
• Install Energy Management Control Systems (EMCS)– County Engineering Design Guidelines now indicate
that installation is standard in all new buildings– Retrofitting existing buildings during Capital Renewal
Projects
Installation of EMCS will save 25-50%
of utility consumption
(depending on type of facility)
Reduce Energy Consumption (cont’d)
• Evaluate existing buildings– Over 700 utility bills are entered into
EnergyCAP database each month by FMD’s accounting section
– Use EnergyCAP database to identify high energy using facilities
– Track reductions in energy as projects are completed
Facilities ranked by use
• Library• Fire and Rescue
Place SF kBtu/ SF $/ SF
FSC18 : JEFFERSON CO #18 18,700 70.01 $1.38FSC16 : CLIFTON CO #16 8,200 72.17 $2.16FSC11 : PENN DAW CO #11 15,806 95.80 $1.74FSC28 : SEVEN CORNERS CO #28 8,575 104.99 $2.02FSC20 : GUNSTON CO #20 7,782 111.14 $2.55FSC29 : TYSONS CORNER CO #29 9,800 116.38 $2.20FSC04 : HERNDON CO #04 8,162 124.80 $2.42FSC40 : Fairfax Center Station 24,195 126.19 $2.24 LEEDFSC15 : CHANTILLY CO #15 10,742 131.33 $2.28FSC31 : FOX MILL CO #31 8,902 139.57 $2.73FSC38 : WEST CENTREVILLE CO #38 12,014 143.13 $2.81FSC34 : OAKTON CO #34 9,910 145.50 $2.62FSC32 : FAIRVIEW CO #32 7,082 146.53 $3.12FSC09 : MT VERNON CO #09 9,000 149.80 $2.86FSC36 : FRYING PAN C0 #36 9,876 154.72 $3.35FSC39 : NORTH POINT CO #39 13,858 162.07 $2.82 Non-LEEDFSC35 : POHICK CO #35 9,545 167.85 $2.83FSC01 : McLEAN CO #01 16,706 169.22 $2.75FSC25 : RESTON CO #25 7,740 172.60 $3.09FSC37 : KINGSTOWNE CO #37 13,127 181.64 $3.30FSC24 : WOODLAWN CO #24 6,800 183.82 $3.46FSC26 : EDSALL ROAD CO #26 8,974 208.72 $3.80
245,496 137.04 $2.57
Place SF kBtu/ SF $/ SF
LIB10 : KINGSTOWNE 15,000 54.04 $1.54LIB05 : GEORGE MASON REGIONAL 27,745 66.76 $1.86LIB21 : GREAT FALLS LIBRARY 12,983 67.92 $1.40LIB20 : WOODROW WILSON 13,500 68.10 $1.55LIB04 : FAIRFAX REGIONAL 37,800 76.34 $1.40LIB14 : POHICK REGIONAL 25,000 79.00 $1.55LIB12 : MARTHA WASHINGTON 11,695 86.54 $1.66 ALIB11 : LORTON 9,923 90.91 $1.77LIB13 : PATRICK HENERY 13,092 92.45 $2.08LIB17 : SHERWOOD REGIONAL 37,680 92.76 $1.71 BLIB03 : DOLLY MADISON 10,632 102.05 $1.83 ALIB19 : TYSONS PIMMIT REGIONAL 25,000 104.25 $2.06LIB15 : RESTON REGIONAL 29,899 105.47 $1.88 BLIB01 : CENTREVILLE REGIONAL 30,000 114.76 $2.59 BLIB02 : CHANTILLY REGIONAL 52,000 115.31 $2.03 BLIB18 : THOMAS JEFFERSON 10,250 118.23 $2.20 ALIB08 : JOHN MARSHALL 13,594 120.54 $2.22 BLIB07 : HERNDON FORTNIGHTLY 17,400 123.73 $2.21LIB09 : KINGS PARK REGIONAL 17,272 154.33 $2.88LIB16 : RICHARD BYRD 9,375 180.13 $3.13 A
419,840 99.05 $1.94
Reduce Energy Costs
• Meter Totalization
• Utility purchasing – Natural Gas Reverse Auction
• Utility bill audits
• Periodic rate schedule evaluation
How to achieve FMD’s Energy Goals?
• Set goal for reducing kBtu/SF
• Established energy guidelines
• Capital Renewal Projects
• Completed Energy Projects
• Review new building designs
• Install Energy Management Control Systems
Completed Energy Projects
• Public Safety Complex Meter Totalization
• Lighting retrofit in facilities– T-12 lamps consume 40W each– T-8 lamps consume 32W (some 28W) each– Reduced from 4 lamps to 3 per fixture for
additional wattage reduction, but overall light output remains the same
• Lighting and Variable Frequency Drive retrofit at the Government Center
Government Center Energy Project Results
• $82,914 Annual Savings
calendar year energy cost kBtu kBtu/SF $/SF $/kBtu2005 $905,434.90 60,373,206 89.45 $1.34 $0.015002006 $878,708.20 55,167,626 81.74 $1.30 $0.01593
Energy project use reduction 8.62%Energy project cost reduction 2.95%
Review New Building Designs from DPWES
• Review drawings and specifications
• Review Life Cycle Cost analysis
• LEED design requirement
• Commissioning
ResultsTotal energy consumption
500,000,000
505,000,000
510,000,000
515,000,000
520,000,000
525,000,000
530,000,000
535,000,000
540,000,000
2001
2002
2003
2004
2005
2006
2007
kBtu
ResultsConsumption/SF
105
110
115
120
125
130
2001
2002
2003
2004
2005
2006
2007
kBtu/SF
Results• Expenditures continue increasing even
though consumption is decreasing
500,000,000505,000,000
510,000,000515,000,000520,000,000
525,000,000530,000,000
535,000,000540,000,000
2001
2002
2003
2004
2005
2006
2007
$0
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
kBtu $
Results
• FMD’s Goal is 10% kBtu/SF reduction over 10 years (average 1%/ year)
• Between FY01-FY07, total kBtu/SF was reduced by 11.1%, which is 1.85% average reduction per year.
Results
Consumption and cost savings per year
460,000,000
480,000,000
500,000,000
520,000,000
540,000,000
560,000,000
580,000,000
600,000,000
base
actual
Total savings since 2001 exceeds $4 million
What’s next?
• Continue existing efforts• Other possibilities available
– Add new EMCS to buildings without them• Currently only have 63 facilities with EMCS in over 170
facilities• Lighting software
– Evaluate renewable energy technologies– Demand side management– Work with code officials and engineers– Energy Audits– Commissioning and Re-commissioning
Conclusion
• Energy savings projects already implemented
• New energy savings = higher initial investment
• Additional 1% reduction/SF/year will be harder
to achieve without significant investment.
• Saving energy saves Fairfax County money!
http://www.fairfaxcounty.gov/living/environment/coolcounties/
Contact Information
Jennifer L. Gorter, PE, CEMFairfax County GovernmentFacilities Management Department
Projects, Engineering, & Energy
12000 Government Center Parkway
Suite 424
Fairfax, VA 22035
703-324-2808
jennifer.gorter@fairfaxcounty.gov