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

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Alamo CollegesSan Antonio College (SAC)

St. Phillip’s College (SPC)

Palo Alto College (PAC)

Northwest Vista College (NVC)

Northeast Lakeview College (NLC)

19251,591,739 ft2 31 Buildings~ 20,000 students

2007367,005 ft2. 16 Buildings~ 15,000 students

1995587,996 ft2. 12 Buildings~ 6,000 students

1985571,342 ft2. 24 Buildings~ 8,000 students

1898779,843 ft2. 18 Buildings

SWC: 381,195 ft2. 6 Buildings

Total Area: 4,512,648 ft²

MLK:

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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.

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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!

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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 2009.

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CC® Savings: New campus - NLC

Temp. StPts

Outside air intake

TU Min. Airflow

CEP Optimization

CO2 control

DP StPt

DAT & SP Resets

SP Resets

Equipment verification

Pseudo-Economizer

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Summer Initiatives

⋅ Turn off boilers when outside air temperature is above 90 °F

⋅ Four day work

week schedules.

⋅ CC® MeasuresSummer 2013

total cost savings: $303,340 $272,313 are due to electricity savings, $31,026 are due to gas

savings.

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Summer Total Utility Cost

The total utility cost for all the campuses has continued to reduce despite the rate and weather variations.

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District-Wide Energy Monitoring

District online access:http://ac-em-iaq/

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®)

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Light Retrofits

Interior Lighting RetrofitRetrofit 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

NLC NVC PAC SAC SPC SWC

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

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Central Plant Retrofit: SAC

Replacement of two water cooled centrifugal chillers of the same capacity, and the existing wooden cooling tower.

Existing chillers efficiency: ⋅0.682 kW/Ton and the New chillers efficiency:⋅0.54 kW/Ton.

Implementation date: March 2013

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Demand Response Program

Program Option

Performance Period:Call Ahead

Notice:Max

Events per Year:Max

Hours per Year:1-Year Term:

Option 2 June 1 to September 30 2 hours 25 75 $67.00

⋅ Program Description:

⋅ Alamo Colleges Performance:

⋅ Rebate: $95,800

Contract kW 20-Jun 27-Jun 28-Jun 11-Jul 24-Jul 31-Jul 1-Aug 2-Aug 6-Aug 7-Aug 3-Sep 12-Sep 30-Sep

PAC Meter#2 50 20 33 13 31 51 46 43 69 46 40 22 35 41SPC - New 100 0 26 0 0 0 24 54 37 120 124 0 55 39NLC - Main 150 245 136 219 201 268 166 223 239 382 216 584 139 218PAC Meter #1 150 277 133 0 295 380 181 213 234 293 305 254 261 214SPC - old 200 140 167 113 266 246 221 300 0 222 198 224 256 147NVC 300 245 300 552 380 300 301 300 83 363 312 135 353 173SAC 350 362 390 224 327 525 340 423 209 486 505 412 329 508

ACCD Total 1,300 1,289 1,185 1,120 1,501 1,769 1,279 1,556 872 1,912 1,701 1,631 1,428 1,340

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Green Initiatives: Solar PanelsSouthwest campus⋅400 kW PV power generation⋅Federal Stimulus grant award ($3 Million)

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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”

FY2012 FY2013

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:

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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

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Energy Savings and Emission Reduction

ItemsTotal Energy

Savings

Electricity Usage (MWh) 149,339

Electric Demand (kW) 214,535

Gas Use (MCF) 485,927

Emission Reductions FY07 FY08 FY09 FY10 FY11 FY12 FY13

Electricity Emissions

NOx (tons) 6.13 5.42 7.18 3.74 5.02 7.24 8.91SOx (tons) 4.15 3.67 4.86 1.35 1.82 2.61 3.22CO2 (tons) 6,357 5,621 7,443 3,462 4,649 6,695 8,246

Gas Emissions

NOx (tons) 2.31 2.74 1.83 2.74 2.66 3.27 3.25CO2 (tons) 1,977 2,348 1,570 2,349 2,282 2,799 2,786

Alamo Colleges Annual Savings

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Cumulative Savings20

Return on Investment

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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⋅ 2004 - Recycling⋅ 2004 – PAC – 4 Day work week⋅ 2003 – SAC, SPC and PAC - SECO ECRM Projects

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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)

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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

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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

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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 StrybosAssociate Vice Chancellor of FacilitiesAlamo Community College Districtjstrybos@alamo.edu

Website:www.alamo.edu