Loudoun County Government Support Center Integrated Energy Plan

Transcription

1 Loudoun County Government Support Center Integrated Energy Plan December 14, 2011

2 County-wide Energy Strategy It is funded by Energy Efficiency & Conservation Block Grant (EECBG), Federal Economic Stimulus Package. The County Board of Supervisors Endorsed County-wide Energy Strategy (CES)on December 15, It encompasses a 30 year horizon to the year Energy Strategy was selected to serve as a national model of community-wide energy planning by: NACO Vision Statement: Loudoun County will Always have reliable & affordable energy, be energy efficient and reduce greenhouse gasses

3 Energy Strategy Goals Be recognized as a location of choice for investment in part because of its innovative energy strategy Strive to have consistently lower energy costs relative to surrounding areas Be recognized as a regional-state-national model of effective energy and climate management Loudoun County s greenhouse gas emissions will be among the lowest in the country Major investments will visibly contribute to meeting the CES goals

4 Government Support Center Overview, EECBG Funded Project 672 acres site 19 Existing buildings 20 New buildings 5 in construction/final design

5 Land Use Master Plan The County is currently developing a land use master plan to support the planned expansion of the campus Future expansion of the campus is based on the current CIP Land use configuration in IEP is based on current master plan layout Important connection between land use master plan constraints and the assumptions used in the development of the IEP

6 Government Support Center IEP Framing Goals Achieve at least 8% Internal Rate of Return Reduce primary energy by 40% from Base Case Reduce GHG Emissions by 55% from Base Case Be platform for public outreach and awareness Include Energy Performance Labeling for all buildings Possible with current Legal & Regulatory framework Contribute to County CHP and Solar PV targets

7 Developing IEP Scenarios Framework Used Energy efficiency If you don t need it don t use it Efficient retrofit of existing buildings More efficient new buildings Heat Recovery If it s already there use it Distributed combined heat and power Evaluate waste heat sources including data centers Renewable energy If it makes sense, go carbon free Renewable electricity Large scale Solar PV Renewable heat - Solar thermal, geothermal Renewable heat and power Energy distribution Invest where it makes sense Flexible distribution electricity, gas, district energy. Avoided grid investments summer peak reduction Same Loading Order as County Strategy

8 Four Scenarios Evaluated 1. Efficiency Existing buildings Efficiency retrofits and solar hot water New buildings Minimum case 10% more efficient than base year Energy Performance Labels and continuous commissioning 2. Energy Supply Alternative A On-site Combined Heat and Power District energy islands 3. Energy Supply Alternative B Waste heat recovery from Hybrid Energy Park District Energy cluster 4. Energy Supply Alternative C Same As 3 with Absorption Chilling Note: Renewable Option for all Scenarios Large Scale Solar Photovoltaic

9 Efficiency Future Buildings Scenario 1 Future Buildings in Construction At least 10% more efficient than category baseline Other Future Buildings At least 10% plus 1.5% per year from 2012 County LEED Silver and future code changes in Virginia Performance-based procurement in place Typical measures Improved envelope insulation, glazing, infiltration Reduced lighting levels, add motion and daylight sensors Overall efficiency of all equipment Active outdoor air management Enhanced Metering and Control System

10 Scenario 1: All Buildings Energy Performance Labeling Public Awareness Displayed in all Buildings Actual energy & GHG performance Regularly updated Validates commissioning Validates ongoing performance Basis for continuous improvement Basis for commissioning validation

11 Scenario 2: Heat Supply Islands Combined Heat & Power with Solar PV option All measures of Scenario 1 plus Island 1: Around Adult Detention Center Co-generation with gas-fired engines 2 X 400 (350) kw electricity Peak heat demand from existing boilers Island 2: Juvenile Detention Center (JDC) and Government Space (GS) Co-generation with gas-fired engines 2 X 55 (40) kw electricity Peak heat demand from existing boilers Solar PV (Option) 1.6 MW ~2.15 M sq ft at current efficiency Summer electrical peak reduction by 1 MW and GHG reductions Roof/wall/surface mounted

12 Scenario 3: Heat Supply Network Heat from Energreen with Solar PV Option All measures of Scenario 1 plus Heat purchase from Hybrid Energy Park (Energreen) Supply area 1: Around Adult Detention Center District heating pipe for interconnection of Power plant and ADC Linking pipes to Fire & Rescue Training Center (and High Bay) Supply area 2: Juvenile Detention Center (JDC) and new Government Space (GS) District heating pipe for interconnection of ADC and new JDC Pipes linking Juvenile Probation Residence and Government Space Solar PV (Option) as for Scenario 2

13 Scenario 3 and 4: Heat Supply Network Heat from Energreen for Heating/Cooling

14 Investment Recommendations Invest $7.3M in Efficiency Existing and new buildings Improved metering Consider investment of $1.9M District Heating subject to: Making building district heating ready Suitable heat supply agreement with Evergreen Prototype for larger potential (e.g. Moorefield Station) Consider investment of $0.5M Absorption Cooling subject to: Suitable heat supply agreement for summer cooling with Evergreen Consider phased investment in Solar PV considering: Rapidly declining market prices and rising efficiencies CES and IEP framing targets Possible future incentives Avoid investment in on-site CHP unless: Significant incentives in future District energy impossible and site selected for CHP training Scenario 4 with PV as Future Option

15 Other Alternative Energy Supplies Wind Generation Wind quality and scale inappropriate Biomass heat Unattractive due to low heat demand and heat recovery alternative Fuel Cell CHP Even higher cost alternative than conventional CHP Low-temperature geo-thermal Youth Center will have small system (Currently under construction) Existing buildings need high heating system temperatures Negative GHG balance in all buildings Dependent on grid fuel mix Recommend review after 2015 for stand alone buildings Potentially viable for Passive Buildings

16 Management Recommendations Hire Site Energy Manager for at least five years Implement Energy Star management practices Manage commissioning and retro-commissioning Establish public outreach programs Included in budget estimates Train County Planning and Construction Staff Performance based building specification and procurement Developing non-binding narrative examples Implement Energy Performance Labels All buildings County-led example EPL training Superior Energy Management Practices

17 Recommendations Economic Development & Public Outreach Configure and Manage GSC as Living Example Multiple examples Community Smart Network Efficient construction and operation Energy & GHG Performance certification and validation Solar Thermal Solar PV Peak and GHG Reduction District energy/heat recovery linked to data center cluster Energy & GHG Management for Continuous Improvement Performance based procurement Future monetization of efficiency and emissions reductions Education, outreach and workforce training Site Energy Manager program lead Role model for many CES Strategies

18 Land Use/IEP Coordination Tie recommendations of IEP back to land use master planning efforts to ensure that planning and site development processes do not preclude implementation of recommended actions Develop exhibits/documentation to identify likely physical improvements that could be necessitated by the recommendations of the IEP (for example, utility corridors and other real estate needs) Treat the IEP recommendations as a component of the land use master plan to ensure that mutually beneficial opportunities are identified

19 Thank You! Najib Salehi Energy Manager Chris depascale Project Manager