Ameresco, Inc. 2015, All Rights Reserved. Expenses. $ Utility. Current Year Utility Budget. Ameresco, Inc. 2015, All Rights Reserved

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1 Ageda Eergy Savigs Performace Cotract Prelimiary Fidigs City of Makato Admiistratio Project Review Ameresco Itroductio Eergy Savigs Performace Cotractig Prelimiary Assessmet Fidigs Next Steps Your trusted sustaiability parter December 2, 2015 Ameresco, Ic. 2015, All Rights Reserved 2 Ameresco, Ic. 2015, All Rights Reserved Re--Purposig of Curret Utility Budget Dollars Re Broad Base of Solutios ESPC Example Aual Cash Outlay from Operatig Budget (Tagible) Utility Expeses Ameresco offers a comprehesive array of eergy solutios to address eergy at every stage before, at, ad after the meter ad o a itegrated basis supportig best practices ad customer value. Curret Year Utility Budget Miesota State Statute Eergy Efficiecy Projects Eergy savigs pay for ifrastructure improvemets Eergy savigs guarateed Ameresco to pursue grats, utility rebates, local icetives, etc. Self-fuded with little or o capital Project guarateed up to 20 year term Fiace Rates are still LOW Re-Purposed Portio of Curret Utility Budget to Fiace Project Costructio Future Aual Eergy Budgets After Eergy Eff. Improvemets = Utility Costs = Project Paymet Ameresco, Ic. 2015, All Rights Reserved Ameresco, Ic. 2015, All Rights Reserved 3 Key Differeces Beefits of Performace Cotractig Traditioal Spec / Bid Performace-Based Low bid awarded based o specificatios (writte by staff or cosultat?) Awarded based o performace & lifecycle costs Project costs fuded by capital budget Project Paymets are offset by guarateed cost savigs freeig up capital for other o eergy city project eeds Piecemeal approach based o available fudig Comprehesive approach (6 12 moth project completio) Up-frot fee for evaluatio/studies No up-frot fee required Performace & savigs are ot guarateed Log-term performace & savigs are guarateed Cotractors have o accoutability to lifecycle costs Performace-based cotractor is tied to guarateeig savigs over term of cotract City assumes cost savigs risk Ameresco shoulders cost savigs guaratee ad risk Multiple cotracts with multiple vedors Oe cotract, sigle-poit accoutability Ameresco, Ic. 2015, All Rights Reserved 5 City of Makato Use of Eergy Overall, the City spet approximately 2,535,256 i 201 o gas ad electric utilities for City Facilities ad Ifrastructure (Buildigs, Water & Waste Water Treatmet, Street Lightig, etc). The chart below shows the breakdow betwee electric ad gas costs. * * Eergy use costs are based o Data provided by the City of Makato Ameresco, Ic. 2015, All Rights Reserved 6 1

2 201 Utility Cosumptio by Facilities Buildig or Facility Public Works City Hall Parks Street Lights Water Treatmet Waste Water Treatmet Public Housig Covetio Ctr Fire Halls Airport NOTE: Prelimiary Assessmet Idetified Facility Improvemet Measures follow Miesota Gree Step Cities best practices for Buildigs ad Lightig ** Electric 2,317 88,178 91, ,728 09, ,06 11, ,299 5,261 59,026 2,061,311 Gas 71,3 30,233 16,93 30,13 12,72 2,639 11,712 12,692 30,965 73,95 City of Makato Opportuities for Facility Improvemet * Utilities based o data provided by City of Makato Ameresco Proud Sposor of the 201 GreeSteps Cities Award 2015 GreeSteps Cities Award Ameresco, Ic. 2015, All Rights Reserved 7 Lightig Improvemets Iterior, Exterior, Street Lights Ameresco, Ic. 2015, All Rights Reserved LED Maiteace Cost Savigs: % LIGHTING Solutios Retrofit Iterior/Exterior/Street Lightig Fixtures w/ LED lightig techology Icrease use of cotrols & sesors to optimize operatios. Itercoect existig Eergy Maagemet Cotrol (EMS) system for uoccupied cotrol Optimize light levels HPS fixture 0 YEARS Relamp Relamp & reballast Relamp Relamp & reballast LED fixture Beefits Ameresco, Ic. 2015, All Rights Reserved Reduces eergy ad operatig costs Improves overall lightig quality Icreases avoided future O&M ad capital cost eeds Improves work eviromet Reduces summer buildig coolig loads 9 LED Light Techology YEARS 80% Less Maiteace (ad Expese) This schedule represets the average time to replace key compoets of both HID ad LED cobra heads. The LED fixture requires far less maiteace. Ameresco, Ic. 2015, All Rights Reserved Color quality Eergy cosumptio Service life (100,000+ hours for street lights) Precise optical cotrol (better uiformity) Dimmig / Cotrollability Lowest total cost of owership LED driver: every years HID lamp: every years Photocotrol every 20 years Photocotrol: every 10 years 10 LED Street Lightig Beefits 60-75% average eergy savigs over metal halide (HID) or high/low pressure sodium Low light level depreciatio over time meas your streets will always be bright Maiteace savigs potetial 300% plus No mercury i the product makig it the ultimate gree ad evirometal optio LED directioal cotrol capabilities miimizes light pollutio(ex: up-lightig) Ameresco, Ic. 2015, All Rights Reserved HID ballast: every 8 years Saves Makato Everyday! LEDs are rapidly becomig the light source of choice for applicatio, beatig other techologies i every category: 0 11 Ameresco, Ic. 2015, All Rights Reserved Other Tagible Savigs Reductio work order requests & maiteace paperwork Reduced procuremet effort ad materials ivetory 12 2

3 LED Street Lightig Maiteace Savigs Example Next Phase of Project Developmet will idetify Implemetatio Costs ad Guarateed Eergy Savigs 100,000+ hours LED Node life (20+ years) Excess Aual Savigs ca be redirected to other ufuded city projects Ameresco, Ic. 2015, All Rights Reserved Ameresco, Ic. 2015, All Rights Reserved 13 LED Parkig Ramp Lightig Upgrade 1 Lightig Improvemets / Restroom Improvemets South West Trasit Authority Ede Prairie RESTROOM Solutios Istall water cotrol devices Properly adjustmet flow for each idividual porcelai fixtures Istall water flow aerators Beefits Reduces water resource cosumptio Lowers water/sewer ad supplies costs Improved fixture flow & operatio Future capital cost avoidace LED Lightig High Pressure Sodium Lumes = 365 Lumes = 8550 Color Temp = 000 K; CRI = 65 Color Temp = 2000 K; CRI = 22 Estimated Bur hrs. = 300,000 Estimated Bur hrs. = 2,000 Watts = 56 Watts = 115 Ameresco, Ic. 2015, All Rights Reserved 15 Buildig Evelope Ameresco, Ic. 2015, All Rights Reserved 16 Buildig Cotrol Improvemets BUILDING CONTROL Solutios AIR INFILTRATION Solutios Seal Wall/Roof coectios Weather strip ad caulk widows ad doors Adjust exterior door closers for improved close timig Seal wall/roof peetratios Beefits Reduces eergy cosumptio while icreasig eergy cost savigs Elimiate air ifiltratio Improves moisture barrier Beefits Ameresco, Ic. 2015, All Rights Reserved 17 Upgrade remaiig peumatics cotrols to Direct Digital Cotrol Upgrade Eergy Maagemet program to optimize occupied space set back operatios ad settigs Stadardize city wide cotrol set poits Upgrade graphical display for easy operatio, moitorig ad reports Istall additioal cotrols - CO2, CO, NO sesors for makeup ad outdoor air systems Ameresco, Ic. 2015, All Rights Reserved Eergy cosumptio/costs reductio Ehaced operator cotrol 2/7 system wide troubleshootig ad moitorig Simple web access to all systems/buildigs reports Improved comfort / work eviromet Historical tredig for operatioal costs aalysis 18 3

4 Motor & Speed Cotrol Improvemets Vetilatio Improvemets MOTOR AND SPEED CONTROL Solutios Electrical Trasformer Solutios Replace City owed Electrical Trasformers Istall New High Efficiecy Trasformer uits Upgrade remaiig high efficiecy electric motors Implemet variable speed cotrols/drives to precisely match operatioal eeds for Air Hadlig Uits or Equipmet Beefits Eergy Coservatio Reduced Summer buildig heat loads Exteds life of Trasformers (capital cost avoidace) Beefits Eergy use/cost reductio Icreases equipmet/motor life cycle Improved operatioal cotrol of buildig/equipmet Capital cost avoidace for equipmet replacemet (old motors) Ameresco, Ic. 2015, All Rights Reserved 19 Vetilatio Improvemets Ameresco, Ic. 2015, All Rights Reserved Saitary Lift Statio Improvemets AHU REPLACEMENT Solutios Lift Statio Solutios Ivestigate opportuities to make the lift statios more eergy efficiet ad moitor performace. Utilize soft starters or variable speed drives o the lift pumps where applicable Utilize SCADA cotrols to remotely moitor lift statio operatio Replace Air Hadlig Uits which are beyod life expectacy as applicable (Office Spaces/Verizo Ctr.) Istall Eergy Recovery systems where possible Modify existig uits to maximize outdoor air ecoomizers Covert Costat Volume to Variable Air Volume (VAV) Systems Recommissioig Existig Air Hadlers for efficiet operatios Beefits Reduced electrical demad charges Real time moitorig to maage costs ad maitai system itegrity Beefits Reduced fuel use ad eergy costs Better comfort of occupied zoes Exteds life of product Allows for improved space utilizatio ad flexibility Ameresco, Ic. 2015, All Rights Reserved Ameresco, Ic. 2015, All Rights Reserved 17 Waste Water Treatmet Plat Cosideratios WWTP Solutios Ivestigate positive displacemet blower uit(s) replacemet water with alterative blower uits. Ivestigate coversio air dispersio equipmet i treatmet process Beefits Reduced electrical eergy cosumptio costs ad demad charges Reduce future operatioal maiteace costs Reduce excessive equipmet soud levels Improve BOD ad COD cotrol Ameresco, Ic. 2015, All Rights Reserved 18 Prelimiary Savigs Aalysis Ameresco, Ic. 2015, All Rights Reserved

5 Prelimiary Utility Savigs Potetial Additioal Areas of Savigs Potetial To Be Quatified Expese City of Makato 2,061,311 Electricity Natural Gas Total Utility % Rage Reductio 5%-7% Savigs Rage 103k- 177k Expese 73,95 % Rage Reducti o Savigs Rage City of Makato Proposed Eergy Reductio Expese 10%- 15% 7k-75k 2,535,256 % Rage Reducti o Savigs Rage 6%-8% 150k- 215k Operatio & Maiteace (TBD) Lightig maiteace materials lamps ad ballasts Log-Term Operatioal Savigs (TBD) Deferred Maiteace/Future Capital Costs Based o capital improvemet projects selected 3,000,000 2,500,000 2,000,000 73,95 02,85 1,500,000 1,000,000 2,061,311 1,917, , Electricity Gas Potetial Aual Savigs Rage - 75K - 10K+ / year Ameresco, Ic. 2015, All Rights Reserved 25 Ameresco, Ic. 2015, All Rights Reserved 26 City of Makato Cost Savigs Opportuity Ameresco s Prelimiary Eergy Assessmet Fidigs Aual Eergy ad Maiteace Costs Avoidace Savigs 20 year Performace Cotract Self Fuded Performace Cotract Self Fudig Project Redirects a portio of Curret Eergy Budget No New Taxes * Based o 201 aual eergy cosumptio costs ~ 220k-300k Cost Savigs each year * Project Size ~ 2.6M - 3.6M * Fuded from Eergy Savigs, Future O&M ad Capital Cost Avoidace, Est. Utility Rebates - 75K+ Prelimiary Project Scope ad Fudig Geeral List of Facility Improvemets for Further Ivestigatio Lightig retrofits & cotrols Water coservatio retrofits Lift Statios High efficiecy trasformers Waste water treatmet equip upgrades Buildig cotrols & automatio Peumatic to direct digital cotrol Street light upgrade Water treatmet Eqpt Fudig Sources to be fully evaluated i Detailed Aalysis Eergy, operatios ad other short/log term budget savigs opportuities Xcel Eergy Rebates - 60K - 80K (based o fial project scope) Private or 3 rd Party Fiacig Other sources to be explored i detailed aalysis Ameresco, Ic. 2015, All Rights Reserved 27 Ameresco, Ic. 2015, All Rights Reserved 28 AMERESCO - Asset Sustaiability Developmet Process & Next Step Ameresco, Ic. 2015, All Rights Reserved 29 Ameresco, Ic. 2015, All Rights Reserved 5

6 Eergy Performace Cotract - Project Developmet Stages Scope of Detailed Aalysis Log-Term Partership Process from Cocept through Savigs Recociliatio Cocept Approval Admiistratio City Coucil Letter to Proceed No-bidig No Cost Prelimiary Aalysis (o cost) Site Surveys Feasibility Aalysis 30 Days Ivestmet Grade Audit Scope Fudig Sources Eergy Services Agreemet Developmet Costs carried Forward to Performace Agreemet 3- Moths Performace Agreemet Costructio Measuremet & Verificatio (M&V) 6 9 Moths Savigs Moitorig (6-9 Moths) Itroduce Needs Assessmet Detailed Aalysis Project Plaig Savigs M&V Cocept Utility Baselie Project Goals Costructio Aual Reports Build Cosesus Project Optios Gather Iformatio Commissioig Aual Budgets /Reports Recociliatio Over Term of Agreemet Egieerig desig with project scope for each Facility Improvemet Measures (FIM) Ameresco to establish eergy cost savigs for FIM Quatify utility rebates ad other available icetives Prioritize facility improvemet measures Recommeded project & optios Cash flow aalyses Approximately days to complete Streamlied Implemetatio Miimizes I-House Staff Time & Quicker Results Ameresco, Ic. 2015, All Rights Reserved 31 Ameresco, Ic. 2015, All Rights Reserved 32 Next Step Key Project Milestoes & Prelimiary Timelie Coucil Resolutio Preset Prelimiary Assessmet Fidigs to Coucil Coucil approves Project Developmet Agreemet to develop a self-fudig Eergy Savigs project Ameresco will complete a Detailed Aalysis to idetify a self-fudig project, or there is No Cost to City of Makato There are No Up-Frot costs to proceed at this time Should a viable self-fudig project ot be approved for implemetatio, a exit fee of 65k to 85k* would be due to Ameresco to cover a portio of icurred egieerig expeses Milestoes Coucil Resolutio Project Developmet Agreemet Deliver Detailed Fidigs & Recommedatios to Coucil Prelimiary Timelie Dec 2015 March 2016 Coucil Facility Improvemet Selectio April 2016 Coucil Approves Project ad Fiacig Optio May 2016 Implemetatio Phase Begis Jue 2016 Costructio Acceptace Jauary 2017 * Depedet o agreed upo Project Scope i the Project Developmet Agreemet Ameresco, Ic. 2015, All Rights Reserved 33 Ameresco, Ic. 2015, All Rights Reserved 3 AMERESCO Iformatio ad Resources Thak You! Ameresco, Ic. 2015, All Rights Reserved 35 6