Meeting the 10% Conservation Goal Jennifer L. Gorter, PE, CEM Fairfax County Government Facilities 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

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

Review New Building Designs from DPWES Review drawings and specifications Review Life Cycle Cost analysis LEED design requirement Commissioning

Results Total energy consumption

Results Consumption/SF

Results Expenditures continue increasing even though consumption is decreasing

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 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!

Contact Information Jennifer L. Gorter, PE, CEM Fairfax County Government Facilities Management Department Projects, Engineering, & Energy Government Center Parkway Suite 424 Fairfax, VA