Wakulla Chamber of Commerce July Place your cover photo here. Size and crop it to 4 high x 9.6 wide. Presented by Derick Farfan

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1 Wakulla Chamber of Commerce July 2017 Commercial Energy Efficiency Programs Place your cover photo here. Size and crop it to 4 high x 9.6 wide. Presented by Derick Farfan

2 Energy Efficiency Incentives Question: Why does Duke Energy offer incentives to save energy? Answer: Since 1951, the Florida Public Service Commission (PSC) has maintained regulatory authority over investor-owned electric utilities. As part of the PSC economic and regulatory goals, Duke Energy agrees to assist consumers in their energy efficiency improvements as part of their rate structure plan. 2

3 SMALL RETAIL BENCHMARK ENERGY USAGE DISAGGREGATION 3

4 Commercial Energy Efficiency Programs Duke Energy Florida offers incentive programs* focused within several improvement categories: Building Envelope HVAC Equipment HVAC System Services * Duke also offers a no cost, on-site, Business Energy Assessment. 4

5 2017 Commercial Energy Efficiency Programs Building Envelope HVAC Equipment HVAC System Services Cool Roof Thermal Energy Storage (Custom Program) RTU Recommissioning Roof Insulation Chillers PTAC Steam Cleaning Ceiling Insulation Large Unitary A/C & Heat Pumps Duct Test & Repair Small Heat Pumps & PTHP Energy Recovery Ventilation Demand Control Ventilation Chiller/HVAC Tune-up 5

6 Commercial Energy Efficiency Programs Building Envelope: Cool Roof New Construction or Retrofit $0.15 / SF installed by licensed contractor on flat roof Up to $50,000 per building Solar Reflectance greater than 0.76 Energy Star or Cool Roof Rating Council certified roof product meeting ASTM E-903 or C-1549 testing Roofing must be installed over air conditioned space and cooling system must be electric 6

7 Commercial Energy Efficiency Programs Building Envelope: Roof Insulation Upgrade New Construction or Retrofit $0.07 / SF incentive installed by licensed contractor Up to $50,000 per building Entire facility must be cooled and heated by electricity (non-portable) The weighted average R-value of the existing insulation above the conditioned space for upgrade must be less than R-12 - and brought to a minimum level of R-19. For New Construction, incentives will only be provided for insulation over R-38. Must be integral part of roof deck assembly 7

8 Commercial Energy Efficiency Programs Building Envelope: Ceiling Insulation Upgrade Retrofit only Must be pre-qualified in advance. $0.10 SF upgrade to R-19 An additional $0.075 SF to upgrade from R-19 to R-38 Entire facility must be cooled and heated by electricity (nonportable) Building must be greater than 2 years old The average R-value of the existing insulation above the conditioned space for upgrade must be R-12 or less Radiant barriers will not be accepted as substitution for insulation Commercial multi-family units will count as individual units for incentive purpose A free Business Energy Check is required prior to installation Flat roofs must have a minimum of 3 air space above insulation 8

9 Commercial Energy Efficiency Programs HVAC Equipment: Thermal Energy Storage (TES) New Construction or Retrofit Incentive dollar amount determined on a case by case basis Custom Program No maximum rebate HVAC equipment must be all electric Equipment efficiencies shall be obtained from D.O.E, AHRI or other nationally recognized certification program Must be installed by a licensed and insured mechanical contractor, Class A,B or C A/C in AHJ Used equipment does not qualify Customer must provide design study showing design load calculations and the calculation of reduced or shifted on-peak to off-peak kw 9

10 Commercial Energy Efficiency Programs HVAC Equipment: Electric Chillers New Construction or Retrofit $50 per ton for qualifying units (FL or IPLV) Chiller efficiencies per AHRI 550/590 test ratings at standard conditions. Used equipment does not qualify 10

11 HVAC Equipment: Unitary A/C and Heat Pumps over 65,000 BTUs New Construction or Retrofit Must be installed by a licensed and insured mechanical contractor, Class A,B or C A/C in AHJ $75 per ton for qualifying equipment Unitary efficiencies per AHRI 210/240 for 135,000 BTUs or less Unitary efficiencies per AHRI 340/360 for greater than 135,000 BTUs Water cooled EER based upon EWT 85ºF Used equipment or split parts do not qualify (i.e. evaporator and condenser must both be replaced) Commercial Energy Efficiency Programs 11

12 HVAC Equipment: Small Heat Pumps - under 65,000 BTUs Retrofit only Replacing Less Efficient Heat Pump - $200 for minimum cooling efficiency of 15 SEER and minimum heating efficiency of 8.2 HSPF Replacing Resistance Heat - $375 for minimum cooling efficiency of 15 SEER and minimum heating efficiency of 8.2 HSPF Must be installed by a licensed and insured mechanical contractor, Class A,B or C A/C in AHJ Cooling efficiencies per AHRI 210/ based upon EER (if not available, use SEER) Heating efficiencies shall be rated by Heating Seasonal Performance Factor (HSPF) Used equipment or split parts do not qualify (i.e. evaporator and condenser must both be replaced) Commercial Energy Efficiency Programs 12

13 Commercial Energy Efficiency Programs HVAC Equipment: Packaged Terminal Heat Pumps (PTHP) and Air Conditioners (PTAC) New Construction or Retrofit $100 per ton for qualifying units, $75 for SPVHPs Cooling / Heating efficiencies per AHRI 310/380 Must be able to handle heating load at 31ºF outdoor temperature without the use of electric strip heating PTHP must be all electric Incentives for (PTAC to PTHP) or (PTHP to PTHP) Mini-Split HP qualify under PTHP program Used equipment or split parts do not qualify 13

14 HVAC Equipment: Energy Recovery Ventilation (ERV) New Construction or Retrofit $1.40 / CFM (Minimum 450 CFM per unit) Efficiencies per AHRI Must be greater than 65% certified winter effectiveness at 100% design air flow heating total Does not qualify where ERV is required by code Equipment life design must be equal or greater than 15 years with (1) membrane change out Equipment and supplemental devices must be UL Listed Commercial Energy Efficiency Programs 14

15 Commercial Energy Efficiency Programs HVAC System Services: RTU Recommissioning Packaged units only $25 / ton up to 50% of the project cost Duke Energy must be notified to have an inspector on-site for random inspection of the procedure Must be performed by a licensed and insured mechanical contractor, Class A,B or C A/C Contractor in AHJ Contractor must follow Duke Energy procedures (available online) and documentation submittal requirements for both pre and post commissioning All equipment servicing and calibration must be performed to manufacturer s standards 15

16 Commercial Energy Efficiency Programs HVAC System Services: HVAC Coil Cleaning $20 per unit (PTHP/PTAC) $20 Per Ton for all other AC units Duke Energy must be notified to have an inspector on-site for random inspection of the procedure Steam cleaning recommended as 305ºF at 42 psi One-time incentive not to exceed 50% of the project cost. A free Business Energy Check is required prior to cleaning. 16

17 Commercial Energy Efficiency Programs HVAC System Services: HVAC/CHILLER TUNE-UP Equipment must be all electric HVAC - $25 per ton Chiller - $5 per ton One-time incentive not to exceed 50% of the project cost. 17

18 Commercial Energy Efficiency Programs HVAC System Services: Duct Test & Leakage Repair Existing equipment only 50% of test cost up to $30 for 1 st unit 50% of test cost up to $20 for 2 nd unit Repair duct up to 25% of the cost up to maximum of $50 per unit Repair duct with electric heat shall be 50% of the cost up to max of $150 per unit. Multi-family buildings must review online procedures and terms Central HVAC systems only 5.5 tons or less Must use preferred contractor trained and certified by Duke Energy 18

19 HVAC System Services: Demand Control Ventilation (DCV) New Construction or Retrofit $50 / ton up to 50% of project cost DCV does not qualify where required by code Must include sensors in the conditioned space that automatically adjust OSA dampers either directly or via building EMS In retrofit applications, the building HVAC should be re-commissioned to ensure proper system balance is maintained Commercial Energy Efficiency Programs 19

20 UNDERSTANDING YOUR BILL 20

21 UNDERSTANDING YOUR BILL 21

22 UNDERSTANDING YOUR BILL 22

23 DEMAND MEASUREMENT INTERVAL Average power over the 15 minute interval Not an instantaneous peak Not caused by motor current inrush Not the peak for 1 minute or 5 minutes This example - the 15 minute demand is 100 kw Demand (kw) min. demand = 100 kw 1:05 PM 1:10 PM 1:15 PM Time 23

24 BILLING DEMAND The maximum 30-minute kw demand in the billing period Sliding or rolling 30 minute average of 2 demand intervals Intervals #1 and #2 (90 kw kw) / 2 = 105 kw Intervals #2 and #3 (120 kw + 100kW) / 2 = 110 kw Intervals #3 and #4 (100 kw + 80 kw) / 2 = 90 kw Demand (kw) :15 PM - Interval #1 1:30 PM - Interval #2 1:45 PM - Interval #3 2:00 PM - Interval #4 110 kw 105 kw 90 kw 15 Min. Intervals 24

25 RATE COMPARE 25

26 REAL WORLD CONDITIONS FOUND DURING ENERGY SURVEY 26

27 REAL WORLD CONDITIONS FOUND DURING ENERGY SURVEY 27

28 REAL WORLD CONDITIONS FOUND DURING ENERGY SURVEY 28

29 THE THERMOSTAT Types of Thermostats: Analog, Digital Non-Programmable, Digital Programmable 5+2, 7 Day Wi-Fi, Smart Thermostats 29

30 THE COST OF THE THERMOSTAT (WHY TO BE LEARY OF HOLD SETTING) 30

31 THERMOSTAT SETTING SAVINGS 32

32 LED LIGHTING 33

33 SIMPLE LIGHTING ENERGY SAVINGS EXAMPLE Example of how energy efficiency rebates can benefit the customer (Lighting) Parameters Old New Current Wattage T12, 40W, 4LAMP LED TROFFER - 36 Number of Fixtures Watts per Fixture 160W 35W Total Wattage 4000W 875W Estimated Energy Cost $0.12 / kwh $0.12 / kwh Annual Operating Hours 2,160 2,160 Annual Energy Consumption 8,640 kwh 1,890 kwh Annual Energy Cost $1,036 $227 Estimated Annual Energy Savings - $809 * Duke Energy Florida no longer offers rebates for lighting projects as of 1/1/

34 Derick Farfan, CEM, CDSM, EI Business Energy Manager Duke Energy Business Assessments O: C: