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NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 ncat

Pursuing Energy Conservation Opportunities in YOUR School. Start with an Energy Audit. NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 www.ncat.org. Introduction. Dave Houser, P.E. ~ Director of Business Development-Energy Services, NCAT

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NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 ncat

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  1. Pursuing Energy Conservation Opportunities in YOUR School Start with an Energy Audit NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 www.ncat.org

  2. Introduction • Dave Houser, P.E. ~ Director of Business Development-Energy Services, NCAT • Tom Pelletier ~ Energy Efficiency Marketing Specialist, NCAT • NCAT Background and Services • Non-profit • Sustainability • Energy + Agriculture • NWE Program Contractor • 30+ Years Experience

  3. NCAT Role • NWE Program Contractor • Marketing • Project Facilitation • Engineering Analysis

  4. Topics of Discussion • Understanding Energy Usage • Recognizing Savings Opportunities • Why get an audit? • How do you get there from here?

  5. Understanding Energy Usage

  6. Energy Conservation Strategies • Lower wattage lighting and lighting controls • Advanced HVAC controls • Upgrading process equipment • Building Envelope Improvements • Maintenance of existing equipment • Reduced operating hours

  7. Case study ~ Large Gymnasium Existing Condition • Approximately 13,000 Square Feet • Fifty 400-Watt Metal Halide Fixtures • 50 Foot-Candles @ 1.73 Watts / Sq. Ft. • Estimated Lighting Cost - $10,300 /Yr Recommend Conversion to Fifty 4-lamp T5HO/WM Fixtures with Occupancy Sensors on each Fixture • 42 Foot-Candles @ 0.83 Watts / Sq. Ft. • Retrofit Cost Estimate - $ 25,000 • Annual Bill Savings - $7,000 • Utility Rebate - $7,500 • Simple Payback 2.5 Years • Larger Facilities • Higher Light Levels

  8. Case study ~ Small Gymnasium Existing Condition • Approximately 6,500 Square Feet • Sixteen 400-Watt Metal Halide Fixtures • 30 Foot-Candles @ 1.11 Watts / Sq. Ft. • Estimated Lighting Cost - $3,300 / Year Recommend Conversion to Sixteen 4-lamp T5HO/WM Fixtures with Occupancy Sensors on each Fixture • 26 Foot-Candles @ 0.5 Watts / Sq. Ft. • Retrofit Cost Estimate - $ 8,000 • Annual Bill Savings - $2,200 • Utility Rebate - $2,400 • Simple Payback - 2.6 Years

  9. Case study ~ Classroom Existing Condition • Approximately 1,000 Square Feet • Eight 4-lamp 32 Watt T8 Fluorescent Fixtures • 50 Foot-Candles @ 0.9 Watts / Sq. Ft. • Estimated Operating Cost - $400 / Year Recommend Conversion to 25 Watt T8 Fixtures with one Classroom Occupancy Sensor • 45 Foot-Candles @ 0.7 Watts / Sq. Ft. • Retrofit Cost Estimate - $ 300 • Annual Bill Savings - $ 200 / Year • Utility Rebate - $ 100 • Simple Payback – 1 Year

  10. Comprehensive School Retrofit Existing Condition • Estimated Annual Energy Consumption: 704,809 KWh • Obsolete building controls • Dual duct system with air mixing at constant volume • Standard efficiency motors • Inefficient lighting • No lighting controls • Oversized and aged boilers

  11. Recommend Conversion HVAC system Improvements Dual Duct air system modifications Control upgrade VAV conversion 60 Hp Supply and 20 Hp return fan motor replacement CO2 sensor in return air duct to control outdoor air New motor and VFD on CP-1 pump Gymnasium HV system improvements Modify ventilation units for one unit to run most of the time Install variable frequency drives Replace motors with premium efficiency motors Install CO2 sensors to control ventilation Reduce locker room exhaust; balance air systems Replace 32 Watt T-8 lamps with 25 Watt T-8 lamps

  12. Comprehensive School Retrofit Annual Energy Savings • 47,138 KWh electricity = $16,940/yr • 567.8 DKT of natural gas =$6,960/yr • $23,900 per year Estimated Project Cost • HVAC measures = $67,315 • Lighting retrofit = $25,312 • Total estimated project cost = $92,627 • Simple payback without rebates = 3.9 yrs • Rebates =$2,531 • Simple payback with rebates = 3.76 years

  13. Why get an Audit? • Identify action items and incentives • Defend taking further action • Not to keep dust off the shelf

  14. How do you get there from here? • Define the project scope • Obtain buy-in/board approvals • Communicate project economics • Project financing options • Identifying qualified contractors • Competitive bidding • Construction oversight

  15. Investor-Owned Energy Company Incentives

  16. Federal Administration • Bonneville Power Administration • Commercial Technical Services • Commercial and Industrial Lighting Rebates • Western Area Power Administration • Commercial Technical Services

  17. Montana Electric Cooperatives Free Energy Audits • Flathead Electric Cooperative • Glacier Electric Cooperative Lighting Rebate Programs • Flathead Electric Cooperative • Glacier Electric Cooperative • Lincoln Electric Cooperative

  18. Next Steps • Energy Audit Break out Sessions • 8:30-9:15 am ~ NCAT & Northwestern Energy • 10:20-11:05 am ~ NCAT & Northwestern Energy • 9:25-10:10 am ~ Western Utilities • 11:15-12:00 noon ~ Eastern & Central Utilities NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 406-494-4572 www.ncat.org

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