NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 Pursuing Energy...
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Transcript of NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 Pursuing Energy...
![Page 1: NCAT- Butte 3040 Continental Drive P.O. Box 3838 Butte, MT 59702 1-866-723-8677 Pursuing Energy Conservation Opportunities in YOUR School.](https://reader036.fdocuments.us/reader036/viewer/2022062511/5519e5a0550346443e8b5140/html5/thumbnails/1.jpg)
NCAT- Butte 3040 Continental Drive
P.O. Box 3838Butte, MT 597021-866-723-8677www.ncat.org
Pursuing Energy Conservation Opportunities
in YOUR School
Start with an Energy Audit
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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
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NCAT Role
• NWE Program Contractor
• Marketing
• Project Facilitation
• Engineering Analysis
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Topics of Discussion
• Understanding Energy Usage
• Recognizing Savings Opportunities
• Why get an audit? • How do you get there from here?
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Understanding Energy Usage
Energy Usage in a Typical Montana School
21%
3%
5%
2%
58%
5%6%
Lighting
Office Equipment
Other
Refrigeration
Space Heating
Ventilation
Water Heating
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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
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Case study ~ Large GymnasiumExisting 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
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Case study ~ Small GymnasiumExisting 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
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Case study ~ ClassroomExisting 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
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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
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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
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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
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Why get an Audit?
• Identify action items and incentives
• Defend taking further action
• Not to keep dust off the shelf
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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
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Investor-Owned Energy Company Incentives
Service Offered
Northwestern Energy
Montana Dakota Utilities
Free Commercial Energy Audit
Yes No
Commercial Lighting Rebate Program
Yes Yes
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Federal Administration
• Bonneville Power Administration
• Commercial Technical Services• Commercial and Industrial
Lighting Rebates
• Western Area Power Administration
• Commercial Technical Services
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Montana Electric Cooperatives
Free Energy Audits• Flathead Electric Cooperative • Glacier Electric Cooperative
Lighting Rebate Programs• Flathead Electric Cooperative • Glacier Electric Cooperative• Lincoln Electric Cooperative
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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 3838Butte, MT 59702
406-494-4572www.ncat.org