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Colorado Public Utilities Commission

Colorado Public Utilities Commission . Aurora Experimental Supercenter Aurora, Colorado September 18, 2008. Wal-Mart in Colorado. 9 Discount Stores 56 Supercenters 15 Sam’s Clubs 2 Distribution Centers As of August, 2008, Wal-Mart has 25,726 associates in Colorado

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Colorado Public Utilities Commission

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  1. Colorado Public Utilities Commission Aurora Experimental Supercenter Aurora, Colorado September 18, 2008

  2. Wal-Mart in Colorado • 9 Discount Stores • 56 Supercenters • 15 Sam’s Clubs • 2 Distribution Centers • As of August, 2008, Wal-Mart has 25,726 associates in Colorado • Wal-Mart spent $1,118,296,258.00 for merchandise and services with 961 suppliers in the state of Colorado which supported 41,523 supplier jobs within the State

  3. The Current Prototype • Daylight Harvesting System • Skylights • Electronic Dimming Ballasts • Computer Controlled Daylight Sensors • High Efficiency HVAC • SEER Rating of new facilities 15.5 – 16.1 • More efficient than the most strict U.S. Energy Code • White Membrane Roofs • High solar reflectivity reduces cooling loads

  4. The Current Prototype • T-8 Flourescent Lamps • All new facilities • Retrofit over 90% complete • LED Lighting • Internally illuminated exterior signage • Refrigeration cases • Heat Reclaim System • Heat from our refrigeration is reclaimed • Provides approximately 70% of hot water needs • Dehumidification • Actively dehumidify our buildings • Higher temperatures/less electrical usage

  5. Energy Management & Metering • All heating, cooling, lighting and refrigeration of all U.S. stores is controlled 24/7 from our home office

  6. Energy Management & Metering • Usage and demand data tracking • Data accessible as soon as interval is complete • Most installations are set up for 15-minute data, but several go down to 5-minute data for demand response program compliance • Real-time data monitoring

  7. 15-Minute Data View Store ramp-up at 6 AM Data drawn same day at 10:40 AM Mountain

  8. Real-Time Data View Sub-meter Real-time demand

  9. Wal-Mart Perspective on Advanced Metering • Wal-Mart has installed or is in the process of installing our own advanced meters • There are several programs around the country where Wal-Mart has been provided incentives for installing our own meters • Another advantage of having our own metering system is it gives full, frequent and easy access to our own meter data.

  10. Wal-Mart Perspective on Advance Metering • Real-time pricing • It has been our experience that RTP provides the most accurate, up to date information so they can manage their load accordingly • RTP also gives us the ability to have the most impact on load reduction at the most critical peak time

  11. Demand Response Project Types • Formal demand response programs at the state, utility, and ISO level • Voluntary demand response to support states, regions, and utilities • Experimentation with back-up generators

  12. Demand Response Programs • ISO-NE • New York ISO • Wisconsin Public Service • Kansas City Power and Light • Austin Energy • PG&E • SDG&E • SCE • TVA • BG&E • Greystone Power Corporation • ComEd • Consumers Energy • PECO • Western Farmer Coop • Canadian Valley Coop

  13. ISO’s • Improve congestion • Coordinate transmission system expansion • Improve regional reliability • Increase economic dispatch of generation resources • Coordinate maintenance schedules of generation • For customers: allows large customers with facilities in multiple utility territories to utilize economies of scale in demand response

  14. Wal-Mart Stores Inc. Thank you

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