Alamo Colleges Energy Conservation Programs: Continuous Commissioning ® The Achieving the Dream Leader College designation recognizes an institution’s impact in the effort to improve student success and eliminate achievement gaps nationwide. JOHN W. STRYBOS, P.E. ASSOCIATE VICE CHANCELLOR OF FACILITIES DECEMBER 18, 2013

Outline ⋅ Alamo Colleges ⋅ Energy Conservation Programs –Continuous Commissioning ® –Demand Response –Summer Initiatives ⋅ SECO –Lighting Retrofits –Plant Retrofits ⋅ Alternative Energy Initiatives ⋅ Sustainability –American Colleges and University President’s Climate Commitment (ACUPCC) reporting –Texas Senate Bill 898 2

Alamo Colleges San Antonio College (SAC) St. Phillip’s College (SPC) Palo Alto College (PAC) Northwest Vista College (NVC) Northeast Lakeview College (NLC) ,591,739 ft 2 31 Buildings ~ 20,000 students ,005 ft Buildings ~ 15,000 students ,996 ft Buildings ~ 6,000 students ,342 ft Buildings ~ 8,000 students ,843 ft Buildings SWC: 381,195 ft 2. 6 Buildings Total Area: 4,512,648 ft² MLK: 3

Continuous Commissioning ® at Alamo An ongoing process to resolve operation problems, improve comfort, indoor air quality, and optimize energy consumption ; using existing systems of commercial and institutional buildings. 4 Energy savings typically pay for process in less than 2 years

CC ® Targets for Alamo Colleges ⋅ Air Handler Optimization –Occupied/unoccupied schedules –Supply air temperature reset schedule –Duct static pressure reset schedule –Economizer mode –Humidity control ⋅ Terminal Box Optimization –Minimum flow setting –Air flow calibration/verification ⋅ Central Plant Optimization –Chilled and hot water reset schedules –Chiller staging Training of Facilities Personnel! 5

CC ® Savings: New Buildings Performing Arts (Convocation) Building at Palo Alto College CC ® measures implemented: September 20, 2011 Approximately 50% demand and consumption reduction The $20.4 million facility built in May

CC ® Savings: New campus - NLC Temp. StPts Outside air intake TU Min. Airflow CEP Optimization CO 2 control DP StPt DAT & SP Resets SP Resets Equipment verification Pseudo- Economizer 7

Summer Initiatives ⋅ Turn off boilers when outside air temperature is above 90 °F ⋅ Four day work week schedules. ⋅ CC ® Measures Summer 2013 total cost savings: $303,340 $272,313 are due to electricity savings, $31,026 are due to gas savings. 8

Summer Total Utility Cost The total utility cost for all the campuses has continued to reduce despite the rate and weather variations. 9

District-Wide Energy Monitoring District online access:

State Energy Conservation Office's (SECO) Texas LoanSTAR Program ⋅ Interior and Exterior Lighting Projects ⋅ Boiler Retrofits ⋅ Chiller and cooling tower replacements ⋅ Pump VFD installation ⋅ Solar Thermal Pool Heating System ⋅ Install thermal storage systems: NLC, NVC and PAC ⋅ AHU Fan VFD installation ⋅ Enhanced Commissioning (CC ® ) 11

Light Retrofits Interior Lighting Retrofit Retrofit existing 32 W, T8 lamps with 28 W, extended life T8 lamps. High Bay Lighting Retrofit Replace existing HID light fixtures with 32 W, T8 and/or T5 high bay fluorescent lamps with >1.15 ballasts factor. $ Savings NLCNVCPACSACSPCSWC Grainger$ 37,574$ 37,671$ 49,120$ 67,375$ 44,066$ 31,827 TEESI$ 10,236$ 14,285$ 32,889$ 54,510$ 30,775$ 16,751 Building Energy Savings Campus Cost Savings 12

Central Plant Retrofit: SAC Replacement of two water cooled centrifugal chillers of the same capacity, and the existing wooden cooling tower. Existing chillers efficiency: ⋅ kW/Ton and the New chillers efficiency: ⋅ 0.54 kW/Ton. Implementation date: March

Demand Response Program Program Option Performance Period: Call Ahead Notice: Max Events per Year: Max Hours per Year: 1-Year Term: Option 2June 1 to September 302 hours2575$67.00 ⋅ Program Description: ⋅ Alamo Colleges Performance: ⋅ Rebate: $95,800 Contract kW 20-Jun27-Jun28-Jun11-Jul24-Jul31-Jul1-Aug2-Aug6-Aug7-Aug3-Sep12-Sep30-Sep PAC Meter# SPC - New NLC - Main PAC Meter # SPC - old NVC SAC ACCD Total1,3001,2891,1851,1201,5011,7691,2791, ,9121,7011,6311,428 1,340 14

Green Initiatives: Solar Panels Southwest campus ⋅ 400 kW PV power generation ⋅ Federal Stimulus grant award ($3 Million) 15 Northwest Vista College ⋅ 155 kW PV power generation ⋅ CPS Rebate for educational institutions: $100,000

Senate Bill 898 “Reduce entity electrical consumption by at least 5 percent each year for 10 years, beginning September 1, 2011” FY2012FY2013 Alamo Colleges 6%8% SAC 6%7% SPC -4%4% PAC 21%3% NVC 4%8% NLC 10%19% SWC 0%5% Annual Reduction Achieved: 16

ACUPCC ⋅ Commitment signed by Chancellor, August 2008 ⋅ Develop a comprehensive climate neutrality Plan (2050) ⋅ Adopted an energy efficiency purchasing plan (Energy Star certified products) ⋅ Developing new construction policies that comply with the U.S. Green Building Council LEED standards. ⋅ Provide Action Plan, Greenhouse Gas Reports (every 2 years), and Progress reports ⋅ Adopting a District-Wide Environmental and sustainability policy 17

Energy Savings and Emission Reduction Items Total Energy Savings Electricity Usage (MWh)149,339 Electric Demand (kW)214,535 Gas Use (MCF)485,927 Emission ReductionsFY07FY08FY09FY10FY11FY12FY13 Electricity Emissions NOx (tons) SOx (tons) CO 2 (tons)6,3575,6217,4433,4624,6496,6958,246 Gas Emissions NOx (tons) CO 2 (tons)1,9772,3481,5702,3492,2822,7992,786

Alamo Colleges Annual Savings 19

Cumulative Savings 20

Return on Investment 21 The Return on Investment for fiscal year 2013:

Accomplishments (Major Completed Projects) ⋅ 2012 – District wide – SAWS toilet Fixture replacement ⋅ 2011 – SPC-SWC - SECO Solar Panels ⋅ 2011 – District Wide – CPS Energy Audits ⋅ 2011 – District Wide – SECO ECRM Assessment ⋅ 2009 – District Wide – 4 day work week ⋅ 2008 – NVC Recycled water ⋅ Recycling ⋅ 2004 – PAC – 4 Day work week ⋅ 2003 – SAC, SPC and PAC - SECO ECRM Projects 22

Alamo Colleges Awards Received for Green Commitment ⋅ 2010 Going Green Award in the Building Management category sponsored by the San Antonio Business Journal ⋅ Second Nature’s 1st annual Climate Leadership Award for Institutional Excellence in Climate Leadership (American College & University Presidents’ Climate Commitment) 23

Current Projects ⋅ NLC – Recycled Water ⋅ SAC – First Responders Academy Water line ⋅ SAC – First Responders Academy On Site Package Treatment Plant ⋅ District Wide – SECO projects ⋅ District Wide – Sustainability Policy and Procedures 24

Next Steps ⋅ Possible LEED Certified Projects –Manzanillo Hall at Northwest Vista College (In progress) –Mountain Laurel –Huisache Hall ⋅ District Wide Solar Panel installations where possible ⋅ PAC, SAC, SPC Rainwater harvesting 25

Thanks. The Achieving the Dream Leader College designation recognizes an institution’s impact in the effort to improve student success and eliminate achievement gaps nationwide. Contact: John Strybos Associate Vice Chancellor of Facilities Alamo Community College District Website: