demand side energy management & conservation lighting retrofits the university of texas at...

Demand Side Energy Management & ConservationLighting RetrofitsThe University of Texas at Austin

The University of Texas at Austin

• Founded in 1883 – some infrastructures more than 100

years old

• ~ 22 million gross square feet

• 427 acres of Main Campus + 400 acres at Pickle Research

Campus

• ~50,000 students and ~20,000 faculty and staff

University Profile

2

Energy Use and Production

• Generate our own electricity for main campus• Purchase water and natural gas• Estimated annual costs for FY 2009/10 greater than

$38 million

4

Energy Use and Production

Main Campus Demand

5

844682

25%

875052

25%

171595950%

Electric Steam Chilled Water

222741052%

109381526%

965229.7

523%

Electric Steam Chilled Water

Campus Use (MMBTU)

Campus Use – Production (MMBTU)

Focus on Electricity and Steam Reductions

• Electric: Fixture, lamp & ballast replacement, occupancy sensors

• Water: Fixture replacement, aerators, flush valves, shower heads

• Steam: Steam trap & valve replacement or repair

What We Accomplished – Lighting, Steam & Water

Project Cost Annual Avoided Costs Simple Payback

Lighting $12.2M $1,888K 6.5 Yrs

Water $1.7M $611K 2.8 Yrs

Steam $1.2M $235K 5.1 Yrs

Total $15.1M $2.8M 5.6 Yrs

6

DSEMC Retrofit Projects

Conducted full inventory of 122 E&G buildings

Utilized Federal Energy Management Program (FEMP) guidelines

Developed project measurement and verification procedures

Sampled existing conditions

Measured performance factors (e.g., watts/fixture, gallons/flush)

Estimated and verified savings at building level

The ProcessAudit, Measurement & Verification

7

Lighting Project

• Renewed or replaced more than

200,000 lighting fixtures

• Installed 2,300 lighting occupancy

sensors

• Recycled 471 tons of materials

8

Case Study Example

Lighting ProjectEnergy Conserving Lighting Products

9

Ceiling Mounted Occupancy Sensor

T12 Lamp (Top) vs. T8 Lamp (Bottom)Electronic Ballast

Photo Referenceshttp://www.allproducts.com/http://ep.yimg.com/http://news.thomasnet.com/http://www.hk-phy.org/

Benefits

• $1.9 million per year in lighting savings

• 25 million KWh per year in electricity

• More than 21 million pounds of CO2E emissions

avoided

• Lamps and ballasts warranties

• 39% reduction in project areas

Electricity for1,500 average

homes

Source: City of Austin

Lessons Learned

10

FY2004 FY2005 FY2006 FY2007 FY2008 FY2009 FY2010 FY20113,000,000

3,500,000

4,000,000

4,500,000

5,000,000

5,500,000

MMBTU - No DSEMC MMBTU - DSEMC

11

Lessons LearnedMain Campus Production – Plant Input

1%MM

BT

U

Project Manager

Professional ServicesProvider

Water

Lighting

Steam

Project Coordinators

Management

Inspection and Coordination

Contractors

aCAT

cCAT

lCAT sCAT wCAT uCAT

Executive

Implementation and Oversight

Teams

12

Lessons LearnedEffective Communications

Project Management

Conservation Action Teams

• Design Build – Very Effective

• Cautious use of energy “savings” as funding strategy

• Leverage for Auxiliary Organizations

• Communications as important as “savings”

• Lighting is an “emotional” issue

• Revisit Lighting Standards

– Energy / Maintenance / Client Expectations

– Are we “agile enough” for the technology

Lessons Learned

13

Questions?

14