Energy Conservation - Utility Savings

1. Save 25% Off Your Utility Bills
EVEN IF YOU HAVE IMPLEMENTED
CONSERVATION MEASURES PREVIOUSLY!
MEC Ohio Energy Conference
February 22nd, 2011
H. Kelly Tisdale C.E.M., LEED AP
Energy Services Division Manager
The Brewer-Garrett Company
1800-686-6869
ktisdale@brewer-garrett.com

2. Agenda
 The Need to be Green
 Measuring Current Consumption
 Benchmarking
 Are you considered efficient or not when compared with similar Businesses
 Assessing Opportunities
 Rebate Programs
 Examine Cost and Savings for Energy Conservation Measures
 Lighting, Ventilation, Automation, Boilers, Chillers
 Sanity Checks – Are savings projections realistic
 New Technologies

3. Greener than Green
“The least expensive and most
environmentally friendly unit of
energy is the one that is never
needed!”
 100 Watt Light Bulb run year
round

4. 100 Watt Light Bulb
 1 MWhr
 750 # of Coal
 45,000 Cubic Feet (Balloons) of Carbon Dioxide

5. Greener than Green
“The least expensive and most
environmentally friendly unit of
energy is the one that is never
needed!”
 100 Watt Light Bulb run year
round
 This represents only about a 50th
of what a US household consumes
 Today‟s technologies can reduce
energy consumption up to 75%

6. Reduction in Pollutants for
Cuyahoga Community College
Annual Reduction – 10,074,032 kWh
Greenhouse Gases 10,600 Tons
VOC 262 Pounds
NOX 30 Tons
Carbon Monoxide 2,100 Pounds
SO2 44 Tons
Particulates 2,500 Pounds
Mercury 270,000 Milligrams

7. Understanding Utility Bills - Electric
Electric Bill
7000
6000
5000
4000
3000
2000
Air Conditioning
1000
0 HVAC Fans
July
January
August
November
June
February
May
March
April
October
December
September
Plug Load
Lighting
kWh
Month

8. Understanding Utility Bills - Gas
Gas Utility - MCF of Gas
1200
1000
800
600
400 Heating
200 Cooking and Misc.
0 Hot Water
July
January
August
November
June
February
May
March
April
October
December
September
Month

9. Measuring Current Consumption
 Convert everything to mmBtu…
 Gas – Total MCF
 MCF = 1 mmBtu
 Electricity – Total kWh
1 kWh = 3412 Btu
 Divide by 1,000,000 = mmBtu
 Example
 1000 MCF = 1000 mmBtu
 100,000 kWh = 341,200,000 Btu = 341.2 mmBtu

10. Benchmarking
 Know the total square footage for you facility –
(example = 10,000 Utility = $225k mmBtu=1,341)
 Calculate mmBtu per square foot
 Example
 Total mmBtu = 1,341
 Total square footage = 10,000
 Total mmBtu per square foot = .1341

11. Benchmarking
Typical mmBtu per square foot
 Schools .03 - .08
 Universities .10 - .17
 Commercial .12 - .15
 Industrials .12 - .25
 Use EERE at Rutgers
 Energy Star

12. Examining Energy Conservation
Opportunities

13. Examining Energy Conservation
Opportunities

14. Rebate Programs
 Lighting
Prescriptive Method
Will pay $7 per Lamp for t-12 or $1 per t-8
$50 per HID fixture
Occ. Sensors, Exit Signs, Parking Lots, Exterior, Motors, VFDs,
Vending, Cooling, PC Power Management, etc.
Custom Program
$.08 per kWh and $100 per kW
Includes anything that reduces electrical load that is
permanently installed
Process- application, Pre-retrofit survey, Post Application, and Proof

15. Examine Energy Conservation
Opportunities
 Lighting
 T-12 to T-8
 T-8 to T-8
 HID to T- 5
 Assume cost at about $1.1 per square foot
 Assume savings at $.17 per square foot
 Example – 10,000 square foot facility
 $11,000 cost
 $1,700 annual savings

16. LED Benefits / Concerns
 Operational Savings
 Reduced recycling costs, Extremely long life, Vibration and orientation proof.
 Energy and HVAC Savings – Up to 50% in some cases.
 Instant-on capabilities
 0-100% dimmability
 Color changing
 Exceptional Lamp Lumen Depreciation
 No UV, No IR, No Mercury
 Small size allows for many new designs and ideas from the ground up that could not have been
possible before.
 Drawbacks?
 COST!
 Glare issues if not properly applied or designed.

17. Established Types of
LED Products
 General Illumination Replacements
Incandescent Halogen Downlights Linear
Landscape Architectural Signage Area

18. Technologies - OLED
 http://www.youtube.com/watch?v=f8S8tbQMp2k&
feature=related

19. Examine Energy Conservation
Opportunities
 Ventilation
 Nearly 40% of your utility cost can come from
conditioning outdoor air
 ASHRAE requirements allow for different control
 Potential Savings = .02 mmBtu per square foot
 Typically 2 – 4 year payback

20. Examine Energy Conservation
Opportunities
 Building Automation
 Savings of 2% to 3% off total Utility
 Retro-Commissioning also 2% to 3%
 Cost is Low
 Payback typically < 1year to 3 years
 Night set-back
 Control Strategies

21. •The first HVAC controllers were pneumatic
•The use of electromechanical relays in ladder logic, to
switch dampers became standardized.
•The relays became electronic switches
•By 1985, pneumatic control could no longer compete with
this new technology.
•By the year 2000, computerized controllers were common
•Today, some of these controllers can even be accessed by
web browsers and PDA’s?

22. Building Automation
„Energy Harvesting Technology‟

23. Innovative BAS Solutions will..
 Preserve existing investments in control and monitoring
devices and integrate them with new standards-based
technologies.
 Access and control through a standard web browser.
 Combine information from different systems to support
better overall facility management.
 Increase flexibility of vendor selection
 Lower operational costs, improved facility operations,
reduced energy costs, increased occupant/tenant
satisfaction, and greater control, manageability, and
security of building operations.

24. Examine Energy Conservation
Opportunities
 Boilers (15 – 25 year ROI)
 Chillers (10 -20 year ROI)
 Occupancy Sensors (ventilation)
 Rooftops AHU‟s
 Processes
 Others
 Water conservation
 Air Dryers

25. Water Conservation
 New fixtures
 Save nearly 40% of bill
 Cooling Towers
 Deduct Meters
 Water Cooled Condensers
 <1year to 3 year paybacks
 Irrigation
 Deduct Meters
 Storm-water Management
 Retention Ponds / Pervious Surfaces / Gardens

26. Sample Project
ECM Investment Annual Savings
Lighting $11,000 $1,700
Ventilation $12,500 $3,000
Auto / Cx $ 5,000 $1,500
Mechanicals $15,000 $1,500
Totals $43,500 $7,700
Payback 5.65 years 29% of bill

27. Sanity Check
 < 20% = Very Conservative
 20% to 25% = Good Target
 25% to 35% = Aggressive Target
 > 35% = Caution

28. SAMPLE CASH FLOW
Financed
Project: $43,500
APR 4.25%
Period - Length 10
Utility Inflation 5%
Total Cash
Flow: $107,525 10 year $55,955
Annual Annual Cumulative
Energy Operational Total Program Auditing Cash Flow Cash Flow
Year Savings + Savings Savings Cost Fee* (Savings-Costs) (Saving - Cost)
1 7,700 1,000 8,700 5,347 0 3,353 3,353
2 8,085 1,050 9,135 5,347 0 3,788 7,141
3 8,489 1,103 9,592 5,347 0 4,245 11,385
4 8,914 1,158 10,071 5,347 0 4,724 16,109
5 9,359 1,216 10,575 5,347 0 5,228 21,337
6 9,827 1,276 11,104 5,347 0 5,756 27,093
7 10,319 1,340 11,659 5,347 0 6,312 33,405
8 10,835 1,407 12,242 5,347 0 6,895 40,299
9 11,376 1,477 12,854 5,347 0 7,507 47,806
10 11,945 1,551 13,497 5,347 0 8,149 55,955
11 12,542 1,629 14,171 5,347 0 8,824 64,779
12 13,170 1,710 14,880 5,347 0 9,533 74,312
13 13,828 1,796 15,624 5,347 0 10,277 84,589
14 14,519 1,886 16,405 5,347 0 11,058 95,647
15 15,245 1,980 17,225 5,347 0 11,878 107,525

29. NEW ENERGY
TECHNOLOGIES
MEC 2011
H. Kelly Tisdale
The Brewer-Garrett Company

30. Honeywell Wind Turbine
Cut in Speed < 2 mph
Bicycle Wheel Design
$5000 on market in June 2011
2kW
2,000 kWh per year
About 225 watts per hour

31. Micro Nuclear – Hyperion & Toshiba
$50M each…already 100 orders
25 MW units (vs. 1000MW Base Load Plant) = 5 New Locomotives
Construction begins in 2013
5,000 to 10,00 homes, 40 year life cycle, safe

32. Nanosolar
Printing Solar Films
Promise of Low Cost = $1 per watt
Increase Efficiencies

33. Solar Windows
Sprayed on Coatings

34. Hairy Solar Panels
19% Efficiency with potential for 40%
Compared to 6 to 9% from Thin Film
Flexible

35. Solar Power and the Fuel Cell
Solar Panels used for Electrolysis
Hydrogen and Oxygen recombine in Fuel Cell
Heats Domestic Water
Power availability very High – Closed Loop

36. QUESTIONS