SCHOOL ENERGY WALK- THROUGH. Andy Robinson, Training and Education, SEDAC

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1 SCHOOL ENERGY WALK- THROUGH Andy Robinson, Training and Education, SEDAC

2 ILLINOIS ENERGY NOW University of Illinois 360 Energy Group 2

3 WHAT WE DO SEDAC Free Services Outreach and Training Energy Assistance and Assessments New Construction Design Assistance New Construction Incentives Energy Performance Contracting Support Retro-Commissioning Application Assistance

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ENERGY EFFICIENCY PORTFOLIO STANDARD ComEd Ameren Illinois Electric Efficiency (75% of $) DCEO Electric Efficiency Gas Efficiency (25% of $) Nicor Gas Peoples/North Shore Ameren Illinois Gas

5 ENERGY EFFICIENCY PORTFOLIO STANDARD ComEd Ameren Illinois Electric Efficiency (75% of $) DCEO Electric Efficiency Gas Efficiency (25% of $) Nicor Gas Peoples/North Shore Ameren Illinois Gas Efficiency (75% of $) Private Sector Businesses Residential Non-profits Public Sector Governments K-12 Schools Community Colleges Public Universities Low-Income Residential Affordable Housing PHAs Implementation Agencies Private Sector Businesses Residential Non-profits SEDAC 5

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7 NEW PROMOTIONS ANNOUNCED Standard and Custom Incentive Program: 1) Waive $300,000 building cap for all facilities. The IL ENERGY NOW Standard and Custom Incentive Programs are waiving the $300,000 building cap for all facilities. If possible, break up large projects into multiple applications not to exceed $150,000 each. 2) The IL ENERGY NOW Standard and Custom Incentive Programs are lifting the incentive cap from 75% of the Total Project Cost to 100% of the Total Project Cost for applications from all State and Federal facilities and school buildings which have never participated in the Standard and Custom Incentive Program received after December 1, Total Project Cost = Equipment + Labor. If you are unsure whether your school building has previously participated in the Standard or Custom Program, please contact Lisa Teubner at Illinois.energy@illinois.gov or

8 ILLINOIS ENERGY NOW INCENTIVES 8

9 ILLINOIS ENERGY NOW INCENTIVES $3.50>50k therms $4.50>100k therms 9

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MORE PROGRAMS FOR IL PUBLIC SCHOOLS Lights

Operator Certification Free resources to help

assistance to improve data centers Email

11 MORE PROGRAMS FOR IL PUBLIC SCHOOLS Lights for Learning STEP Data Center Building Operator Certification Free resources to help K-12 teachers deliver an energy-efficiency lesson Free energy-saving products for schools to self-install Free assessments and engineering assistance to improve data centers Rebated building operator training for large school districts 11

13 EFFICIENCY IS WORKING Total US energy use has leveled off since 2000 Production is up, imports are down, exports are up.

14 EXAMPLES OF EQUIPMENT HVAC Distribution System RTU Chillers Boilers Controls Steam Traps Furnaces Lighting Motors

Heating, Cooling (condensing boilers) 5. Motors & Pumps (VFDs, turn off) 6. Building Automation 7.

15 TOP TEN ENERGY STRATEGIES Loads 1. Lighting 2. Plug Loads (computers, heaters) Heating, Ventilating, & Air Conditioning 3. Ventilation (reduction, heat recovery) 4. Heating, Cooling (condensing boilers) 5. Motors & Pumps (VFDs, turn off) 6. Building Automation 7. Commissioning EXTRA CREDIT: After implementing all of these, consider renewables such as solar and wind. Building Envelope 8. Air Sealing 9. Insulation (roof deck, walls unlikely) 10. Windows (likely very expensive)

16 EXTRA CREDIT Renewables: Plan the infrastructure now for future Select site-appropriate technologies Use to take last step to net-zero Consider a Power Purchase Agreement 16

SUCCESS STORY: LEMENTARY SCHOOL A What they did Replaced existing boiler and chiller New windows Retrofit lighting Occupancy sensors Air sealing Elementary School Building Type

17 SUCCESS STORY: LEMENTARY SCHOOL A What they did Replaced existing boiler and chiller New windows Retrofit lighting Occupancy sensors Air sealing Elementary School Building Type Energy Measures K-5 School HVAC, lighting, windows, occ sensors, controls Annual Energy Savings $16,933 Total DCEO Incentives $29,800 Total Project Cost $138,801 Payback 6.4 years

SUCCESS STORY: ELEMENTARY SCHOOL B What they did New Geothermal New windows Retrofit lighting Occupancy sensors Air sealing (not completed yet) Elementary School Building Type K-5 School Why high

18 SUCCESS STORY: ELEMENTARY SCHOOL B What they did New Geothermal New windows Retrofit lighting Occupancy sensors Air sealing (not completed yet) Elementary School Building Type K-5 School Why high payback was acceptable. Previously heated with boiler and unit ventilators Boiler needed to be replaced They added air conditioning Windows at end of life Energy Measures Total Project Cost $618,501 Total DCEO Incentives $35,393 Final Project Cost $583,108 Annual Energy Savings $19,587 Payback HVAC, lighting, windows, occ sensors, controls 29 years

19 WALL TO ROOF JUNCTION AIR SEALING PRE-RETROFIT POST AIR SEALING From SEDAC report After Air Sealing

20 EXAMPLE: ENVELOPE PROBLEMS Occupants were cold No continuous insulation Don t underestimate the impact of thermal bridging This is not easy to change once the building is occupied

21 EXAMPLE SITE AND BILLS Sep09-Aug10 Annual Consumption Annual Costs Average Unit Cost Electric Energy 2,041,200 kwh $106,176 31% $0.05 $/kwh 2001 High School Standard construction Constant volume system Standard efficiency boilers Ran out of money on the energy budget Electric Demand Natural Gas kw (min-max) $88,812 26% $16 $/kw 165,094 therms $145,097 43% $0.88 $/therm Total $340,085 Floor Area 117,000 sf Occupants 300 Students, 55 Staff Electricity Use Intensity 17.4 kwh/sf/yr Gas Use Intensity 1.41 therms/sf/yr Energy Use Intensity 201 kbtu/sf/yr Energy Cost Intensity $2.91 $/sf/yr $ $88k $175k $260k $350k Sept 07 - Aug 08 Sept 08 - Aug 09 Sept 09 - Aug 10 Targe tfinder kbtu/sf/yr

22 Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Dec-08 Feb-09 Apr-09 Jun-09 Aug-09 Oct-09 Dec-09 Feb-10 Apr-10 Jun-10 Aug-10 Oct-10 Dec-10 Feb-11 Apr-11 Jun-11 Aug-11 Oct-11 Dec-11 Feb-12 Apr-12 Jun-12 Aug-12 Oct-12 Gas Use (therms) Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Dec-08 Feb-09 Apr-09 Jun-09 Aug-09 Oct-09 Dec-09 Feb-10 Apr-10 Jun-10 Aug-10 Oct-10 Dec-10 Feb-11 Apr-11 Jun-11 Aug-11 Oct-11 Dec-11 Feb-12 Apr-12 Jun-12 Aug-12 Oct-12 Dec-12 Electricity (kwh) BILL ANALYSIS 300, , ,000 On-Peak kwh Off-Peak kwh Cooling Degree Days SBHS: Monthly Electricity Usage 2008 had summer school 150, ,000 50,000 Some anomalies in 2007 Fairly high spring and fall baseload 0 25,000 Therms Heating Deg Days SBHS: Monthly Gas Usage 20,000 15,000 HDD line is a relative indicator of gas use 10,000 5,000 Notice pretty good seasonal dependency 0

23 Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Dec-08 Feb-09 Apr-09 Jun-09 Aug-09 Oct-09 Dec-09 Feb-10 Apr-10 Jun-10 Aug-10 Oct-10 Dec-10 Feb-11 Apr-11 Jun-11 Aug-11 Oct-11 Dec-11 Feb-12 Apr-12 Jun-12 Aug-12 Oct-12 Gas Use (therms) Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Dec-08 Feb-09 Apr-09 Jun-09 Aug-09 Oct-09 Dec-09 Feb-10 Apr-10 Jun-10 Aug-10 Oct-10 Dec-10 Feb-11 Apr-11 Jun-11 Aug-11 Oct-11 Dec-11 Feb-12 Apr-12 Jun-12 Aug-12 Oct-12 Dec-12 Electricity (kwh) BILL ANALYSIS 300,000 On-Peak kwh Off-Peak kwh Cooling Degree Days 250,000 SBHS: Monthly Electricity Usage 200, , ,000 Then, things went crazy. 50, ,000 Therms Heating Deg Days SBHS: Monthly Gas Usage 20,000 15,000 10,000 5,000 0

24 Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Dec-08 Feb-09 Apr-09 Jun-09 Aug-09 Oct-09 Dec-09 Feb-10 Apr-10 Jun-10 Aug-10 Oct-10 Dec-10 Feb-11 Apr-11 Jun-11 Aug-11 Oct-11 Dec-11 Feb-12 Apr-12 Jun-12 Aug-12 Oct-12 Gas Use (therms) Feb-07 Apr-07 Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 Dec-08 Feb-09 Apr-09 Jun-09 Aug-09 Oct-09 Dec-09 Feb-10 Apr-10 Jun-10 Aug-10 Oct-10 Dec-10 Feb-11 Apr-11 Jun-11 Aug-11 Oct-11 Dec-11 Feb-12 Apr-12 Jun-12 Aug-12 Oct-12 Dec-12 Electricity (kwh) BILL ANALYSIS SBHS: Monthly Electricity Usage 300,000 On-Peak kwh Off-Peak kwh Cooling Degree Days Now it is fixed. 250, , , ,000 50, ,000 20,000 Therms SBHS: Monthly Gas Usage Heating Deg Days 15,000 10,000 5,000 0

25 1 - MS 1 - MS 2 - Elem 3 - HS 4 - Elem 5 - Elem 6 - MS 7 - HS 8 - K Elem 10 - HS 11 - HS 12 - Elem 13 - Elem 14 - HS 15 - Elem 16 - Elem 17 - HS 18 - HS 19 - Elem 20 - Elem 21 - Elem 22 - HS 23 - K Elem 25 - Elem 26 - Elem 27 - MS 28 - MS 29 - HS 30 - Elem 31 - Elem 32 - Elem 33 - MS 34 - Elem 35 - HS 36 - Elem 37 - Elem 38 - Pre-K 39 - Elem 40 - Elem 41 - MS 42 - HS 44 - Elem 43 - HS 45 - Elem 46 - Elem 47 - HS kbtu/sf-yr BILL BENCHMARKING SEDAC Illinois K-12 School Energy Use Intensities Electric kbtu/sf Gas kbtu/sf Bad Year '09-'10 Fixed '10-'11 Original '08-'

26 MAP AND PLAN 26

27 GYM LIGHTING ECRMs T5HO or LED Multi-level lighting capabilities Occupancy sensor controls 27

28 MULTI-LEVEL SWITCHING

29 LED T8 RETROFIT? Hurdles to overcome: Cost ($90 to $20 to $10 to $7) Reduced Savings (32W T8 to 17W LED) Reliability: is it going to fail (or have a short)? Remove ballast, or use a dual-drive? 29

30 EXTERIOR LED LED Parking lot fixtures mainly save energy by having better directionality. Savings of 50-60% are typical. There is also potential for motion sensors, photo cells, and dimming.

31 POOLS ECRMs VFDs Pool Covers High efficiency boilers Dehumidification energy recovery 31

32 POOL FILTERS & PUMPS Multiple 15 HP pumps Horizontal Sand Filters Restrictor valve at 40% open Great opportunity for a VFD 32

33 POOL DEHUMIDIFICATION EQUIPMENT ECRMs Corrosive conditions: Watch out for old valves bleeding hot water Watch out for for hot gas bypass valves failing 33

34 BOILERS - LARGE This 1960 steam unit has a new burner with an O2 sensor and separate gas and air controls to optimize burner efficiency. +2% Options: -Boiler Tune Up -New Boilers -High Impact Incentives 34

35 SMALL BOILER 20,000 sf building New 94% condensing boiler is tiny Included new basement windows Saved $2,000 in 14-15

36 HYBRID BOILER ECRM 4: Add a Condensing Boiler Supplement the two original boilers with a high efficiency modular condensing unit. This will run at peak efficiency during most of the low-load heating hours. ECRM 4 Annual Savings kwh kw therms Energy % $ Estimated Cost Add a Condensing Boiler ,632 9% $18,133 $50,000 Gas for heating $75,000/yr Full engineering analysis is necessary. Isolate the two old boilers with valves. AKA: Shoulder Boiler or Front-Loaded Boiler Full upgrade is always an option if funds allow.

37 STEAM TRAPS Float steam trap testing with IR camera and ultrasonic probe. Up to 30% failed open is common But this client was already proactive with maintenance

38 CHILLERS AND COOLING TOWERS 38

39 KITCHEN EXHAUST HOODS ECRMs Ventilation reduction: Automatic controls Dishwasher interlock Manual VFD controls 39

CASE STUDY NEW CONSTRUCTION INCENTIVES High School Building Type K-12 Energy Measures Annual Energy Savings $9,061 Lighting, HVAC, envelope Total DCEO Incentives $110,336 Net Incremental Cost

40 CASE STUDY NEW CONSTRUCTION INCENTIVES High School Building Type K-12 Energy Measures Annual Energy Savings $9,061 Lighting, HVAC, envelope Total DCEO Incentives $110,336 Net Incremental Cost $34,137 Simple Payback 3.7 years What they did 147,867 sf addition and renovation Improved lighting Improved envelope High Efficiency HVAC What they got Incentive for 18% beyond code Case study by SEDAC 40

SUMMARY SEDAC is in place to help identify cost effective energy efficiency solutions for buildings in Illinois We are a first-stop for all your ILLINOIS ENERGY NOW questions Trade Allies are private

41 SUMMARY SEDAC is in place to help identify cost effective energy efficiency solutions for buildings in Illinois We are a first-stop for all your ILLINOIS ENERGY NOW questions Trade Allies are private sector partners to help make changes There are many examples of other owners who have taken advantage of these programs. Get your buildings involved in these programs! Energy Assessments Retro-Commissioning New Construction Design Assistance New Construction Incentives Andy Robinson, CEM, LEED AP Training and Education Director, SEDAC 41

42 Illinois Energy Now

ENERGY COST BREAKDOWN Cooling $29,906 17% Kitchen $3,717 2% Water Heating

8% Heating $75,707 45% Envelope $22,698 13% Reheat $24,396 15% Ventilation

envelope losses Lights use more than cooling and have great potential for

43 ENERGY COST BREAKDOWN Cooling $29,906 17% Kitchen $3,717 2% Water Heating $5,380 3% Fans and Pumps $15,300 9% Lights $32,307 18% Plug Loads $13,338 8% Heating $75,707 45% Envelope $22,698 13% Reheat $24,396 15% Ventilation $28,612 17% Of the 45% spent for heating, about one third is for building envelope losses Lights use more than cooling and have great potential for savings Based on a typical good year In problem year, HVAC is double.

44 KEEP IT SIMPLE: SMALL HVAC 44

45 PORTFOLIO MANAGER 45

46 Jan-10 Mar-10 May-10 Jul-10 Sep-10 Nov-10 Jan-11 Mar-11 May-11 Jul-11 Sep-11 Nov-11 kwh CDD UTILITY DATA 60,000 50,000 40,000 30,000 20,000 kwh CDD ,000 Actual monthly utility 0 consumption data More is better than less Multiple years can illustrate anomalies Changes in consumption other than weather related may be highlighted Watch out for (and note) estimated consumption (vs. actual meter reading) Preparation for site visit

47 Election Day, school is closed. But some portions are open for polling. 160 ) November 2010 W (k 140 d n a m e D 120 y rg e n E 100 tric c le E d re te e M l a rv te In r u o -H / :00 AM to 12:30 AM 1:00 AM to 1:30 AM 2:00 AM to 2:30 AM 3:00 AM to 3:30 AM 4:00 AM to 4:30 AM 5:00 AM to 5:30 AM 6:00 AM to 6:30 AM 7:00 AM to 7:30 AM 8:00 AM to 8:30 AM 9:00 AM to 9:30 AM 10:00 AM to 10:30 AM Tuesday November 2, 2010 Figure 1: 1/2-Hour Interval Metered Electric Energy Demand November :00 AM to 11:30 AM 12:00 PM to 12:30 PM 1:00 PM to 1:30 PM 2:00 PM to 2:30 PM 3:00 PM to 3:30 PM 4:00 PM to 4:30 PM 5:00 PM to 5:30 PM Monday November 1, :00 PM to 6:30 PM 7:00 PM to 7:30 PM 8:00 PM to 8:30 PM Don t forget the power of interval data analysis when available! 9:00 PM to 9:30 PM 10:00 PM to 10:30 PM 11: 00 PM to 11:30 PM Mo Tue We Thu Frid Sat Sun Mo Tue We Thu Frid Sat Sun Mo Tue We Thu Frid Sat Sun Mo Tue We Thu Frid Sat Sun Mo Tue

48 12:00 12:30 1:00 AM 1:30 AM 2:00 AM 2:30 AM 3:00 AM 3:30 AM 4:00 AM 4:30 AM 5:00 AM 5:30 AM 6:00 AM 6:30 AM 7:00 AM 7:30 AM 8:00 AM 8:30 AM 9:00 AM 9:30 AM 10:00 10:30 11:00 11:30 12:00 12:30 1:00 PM 1:30 PM 2:00 PM 2:30 PM 3:00 PM 3:30 PM 4:00 PM 4:30 PM 5:00 PM 5:30 PM 6:00 PM 6:30 PM 7:00 PM 7:30 PM 8:00 PM 8:30 PM 9:00 PM 9:30 PM 10:00 10:30 11:00 11:30 Electricity Use (kw) HOURLY ENERGY USE All Lights On January 2011 Cleaning Done - Lights Off Staff Arrives Turns On ½ Lights Fans and Pumps

49 kw CHANGING THE SCHEDULE Red: Spring Break 2011 (March 28-April 02) 5am - 5pm Reduced Schedule Fri, Mar 25, 2011 Sat, Mar 26, 2011 Sun, Mar 27, 2011 Mon, Mar 28, 2011 Tue, Mar 29, 2011 Wed, Mar 30, 2011 Thu, Mar 31, 2011 Fri, Apr 01, 2011 Sat, Apr 02, 2011 Sun, Apr 03, 2011 Mon, Apr 04, 2011 Tue, Apr 05, :00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 Spring break was used as a test Morning start was changed from 5am to 6am Evening shutdown was changed from 10pm to 5pm This saved $250/wk (or $13,000 per year) in fan electricity alone

50 ONGOING COMMISSIONING Requires a full-time energy watchdog Nights, weekends, holidays You can t turn things off when you aren t around Someone to put eyes on all the dampers, valves, VFDs, boilers, chillers, and plug loads Potential for 10-25% savings 50

51 12:00:00 AM 1:10:00 AM 2:20:00 AM 3:30:00 AM 4:40:00 AM 5:50:00 AM 7:00:00 AM 8:10:00 AM 9:20:00 AM 10:30:00 AM 11:40:00 AM 12:50:00 PM 2:00:00 PM 3:10:00 PM 4:20:00 PM 5:30:00 PM 6:40:00 PM 7:50:00 PM 9:00:00 PM 10:10:00 PM 11:20:00 PM 12:30:00 AM 1:40:00 AM 2:50:00 AM 4:00:00 AM 5:10:00 AM 6:20:00 AM 7:30:00 AM 8:40:00 AM 9:50:00 AM 11:00:00 AM 12:10:00 PM 1:20:00 PM 2:30:00 PM 3:40:00 PM 4:50:00 PM 6:00:00 PM 7:10:00 PM 8:20:00 PM 9:30:00 PM 10:40:00 PM 11:50:00 PM AHU 2 and associated VAV box 201 VAV Damper Reheat Coil Supply Fan Outside Air Damper 12/9/ /10/2011 System fans do not throttle down at night Outdoor air % stays high 40% VAV boxes stay open Night setpoints are the same as the day setpoints Reheat runs excessively through the night

LIBRARY ENERGY WALK- THROUGH. Andy Robinson, Training and Education, SEDAC

LIBRARY ENERGY WALK- THROUGH. Andy Robinson, Training and Education, SEDAC LIBRARY ENERGY WALK- THROUGH Andy Robinson, Training and Education, SEDAC ILLINOIS ENERGY NOW University of Illinois 360 Energy Group 2 WHAT WE DO SEDAC Free Services Outreach and Training Energy Assistance