General Services. CML s 91 st Annual Conference June 18 21, 2013 Vail, Colorado. Greenprint Denver. Agenda. New Buildings 6/3/2013

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1 CML s 91 st Annual Conference June 18 21, 2013 Vail, Colorado General Services Facilities Management 125 buildings 6 million SF Utilities $29 million annual budget Purchasing $260 million annually Chilled Water 5% 2012 Utility Budget Water 2% Streetlights 41% Sewer 4% Steam 8% Storm Drainage 2% Building Electricity 31% Solar Power 0% Heating Gas 7% Greenprint Denver Green Building and Energy Efficiency Christian Williss Sustainability Program Administrator June 21 st, Year Action Agenda Energy and Emissions Natural Resource Stewardship Materials and Waste Management Land Use and Transportation Community and Economic Development Executive Order 123 Agenda Overview of Denver s energy efficiency program New buildings Existing buildings Next steps From Executive Order 123: All new City buildings and major renovations shall be certified to LEED NC (New Construction) Silver Certification, with the goal of achieving LEED NC Gold. It shall be the policy of the City to improve efficiency in all City facilities and to pursue renewable energy projects and programs. 1

2 Better Denver Bond $550 million 319 projects Deferred maintenance, new and renovated vertical and horizontal construction including 10 new buildings Better Denver Bond Sustainability Requirements Materials and Resources Construction Waste Recycling Recycled content materials Regional Materials Indoor Environment Quality Construction IAQ Management Low Emitting Materials Energy Commissioning: Ensure enhanced commissioning per LEED NC ver. 3.0, Energy & Atmosphere (E&A) Credit 3. Energy Optimize Energy Performance: Earn at least 8 points by achieving an increased level of energy performance above the baseline established by ASHRAE/IESNA Standard per LEED NC, ver. 3.0, EA Credit 1. LEED SILVER: Van Cise Simonet Detention Facility Justice Center Parking Garage LEED Certification LEED PLATINUM: Denver Municipal Animal Shelter LEED GOLD: Lindsey Flanigan Courthouse (ENERGY STAR 87) Denver Police Traffic Operations/Training Facility Denver Crime Lab Central Park Recreation Center Green Valley Ranch Library Eastside Human Services Office Building (ENERGY STAR 81) Sam Gary Library Central Platte Fleet Maintenance Central Platte Gary Price Ops Better Denver Bond Sustainability Requirements Site Selection Bicycle Storage and Changing Rooms Storm Water Design Heat Island Effect Light Pollution Reduction Water Efficiency Water Efficient Landscaping Water Use Reduction Energy and Atmosphere Optimize Energy Performance Enhanced Commissioning Existing Buildings From Greenprint Denver: Reduce energy use by 1% per year per building square foot in City government facilities. Reduce energy use by 5% from 2006 levels per building square foot in City facilities. From Executive Order 123: All capital improvement projects shall be designed and constructed using LEED best practices. 2

3 Existing Buildings Capacity building + capital improvements Energy audits + strategic capital improvements Re/retro commissioning + operational improvements Ongoing Commissioning + persistence of savings Energy Audits ASHRAE Energy Audits Preliminary Energy Use Analysis Level I Walk through Analysis Level II Energy Survey and Analysis Building Capacity Sustainability Fund Annual budget of $200,000 Quarterly funding review process All utility rebate checks deposited in this account for reinvestment in new projects Over 85 projects funded since 2007 Re/retro-commissioning a systematic, documented process that identifies low cost operational and maintenance improvements in existing buildings and brings the buildings up to the design intentions of its current usage. RCx typically focuses on energy using equipment such as mechanical equipment, lighting and related controls and usually optimizes existing system performance, rather than relying on major equipment replacement, typically resulting in improved indoor air quality, comfort, controls, energy and resource efficiency. CA.gov Commissioning and Retro Commissioning Buildings Capital Improvements Conventional energy efficiency and sustainability projects Limited demonstration projects where a case can be made for expansion to other facilities Lighting T8s, T5s, CFLs, and LEDs Mechanical VFDs, timers, valve replacement Controls occupancy and CO2 sensors, new controls, PC power management Energy Audits and Retro Commissioning of City Facilities Project Goals 1. Develop a comprehensive list of energy efficiency opportunities including project cost, energy and cost savings, payback, and emissions reduction information 2. Identify and implement no and low cost operational improvements that result in immediate energy use and cost savings 3. Enable more strategic energy efficiency investments for remaining EECBG and future capital funding 4. Project goals evolved leading to additional benefits 3

4 Energy Audits and Retro Commissioning of City Facilities Phase I 51 rec centers, libraries, and City data center Phase II 9 large office buildings, high energy users, and 24/7 facilities, most with building automation systems Phase III 5 of the City s largest energy users with a focus on all aspects of building operation and move toward ongoing commissioning Castro Building Capital Improvements Retrofit Project Results Retro-commissioning Phase I (51 buildings) $8.1 million in improvements identified $743,000 in potential annual energy savings $321,000 in utility rebates 11.3 year overall simple payback Phase I 6% 22% 72% Fire Station #2 Retro commissioning/improvements Phase II (9 buildings) $3.4 million in improvements identified $424,000 in potential energy savings $235,000 in utility rebates from Xcel Energy 6.7 year overall simple payback Phase II 4% 22% 74% RCx Savings Improvement Savings Remaining Utility Spend Project Results What s Next? Phase III (5 buildings) $2.4 million in improvements identified $519,680 in potential annual energy savings 45 recommendations 4.6 year overall simple payback 6% Ongoing commissioning pilot in progress 85% Phase III 9% RCx Savings Improvement Savings Remaining Utility Spend Facility Commissioning and Assessment Program Ongoing commissioning Greater use of existing (and new) technology Process, design, and construction guidelines Occupant engagement Strategic energy management plan 4

5 City of Denver, CO Energy Performance GOAL 20% Reduction in Energy Intensity by 2020 from a 2011 Baseline CHALLENGE COMMITMENT 6.64 Million Square Feet PROGRESS TO DATE Cumulative (vs. Baseline) 6% Annual (2012) 6% Portfolio Energy Performance Better Buildings Challenge Partners strive to decrease portfolio-wide source energy use intensity (EUI) and to increase the percent improvement compared to a set baseline. Denver's portfolio consists of more than 140 buildings and 7 million square feet. Since 2011, Denver has improved energy performance by 6 percent. Energy savings have been achieved by implementing various capital improvements, retrocommissioning in numerous facilities including 5 of the City's largest energy users, and creating a culture of efficiency. Source EUI (kbtu/sq. ft.) EUI and Percent Improvement vs. Baseline Baseline 2012 Energy Performance by Facility Looking at the percent improvement in energy performance across all facilities can provide insight into how an organization is saving energy. Denver has achieved energy performance improvement of greater than 6% at more than 50 of its facilities. There are forty facilities that have experienced an increase in Source EUI. Some of these have recently expanded hours as a result of the improved economy. We will continue to work with these facilities to identify opportunities to improve efficiency. Number of Facilities Number of Facilities by Cumulative % 50 Improvement Cumulative % Improvement Category Christian Williss Sustainability Program Administrator christian.williss@denvergov.org 5