Energy audit an energy certification


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Energy audit an energy certification

  1. 1. ENERGY AUDIT AND ENERGY CERTIFICATION Author: Luca Vecchiato (Energol)Energy audit and energy certification 1 Energy: general overviewDirective 2006/32/EC Directive 2012/27/CE “White certificates” UNI 11339: Energy expertD. Lgs. 115/2008 UNI 11352: ESCo UNI 11428: Energy audit Energy Management System certification: ISO 50001Energy audit and energy certification
  2. 2. Directive 2012/27/CE “Energy efficiency”Energy audit and energy certification Share of greenhouse gas emissions in 2010 • The use of energy is responsible for the majority of Agriculture greenhouse gas 10% emissions, with the Industry Processes energy sector 8% Waste 3% representing 31%, Other transport 19%, Energy 0% 79% industry 13%, households 9% and others 7%.Energy audit and energy certification
  3. 3. Meeting all three “20-20-20 by 2020” goals becomes a matter of urgency Reduce greenhouse Increase share of Reduce energy gas levels by 20% renewables to 20% consumption by 20% 100% Current Current trend to 2020 -20% trend to -10% 2020 Current trend to 2020 20% Energy audit and energy certification So far the EU is not on track to meet its 20% energy saving target by 2020 1900 Projections from 2007 business 1850 1842 Mtoe Projections from 2009 as 20% Energy saving objectivePrimary energy consumption*, Mtoe usual 1800 1750 1700 1678 Mtoe Status 1650 today 1600 GAP 1550 1474 Mtoe 1500 -20% objective 1450 1400 2005 2010 2015 2020 Energy audit and energy certification * Gross inland consumption minus non-energy uses
  4. 4. Despite its crucial benefits for europe … Reduce EU’s energy bill by about € 200 bn annualy in 2020 Create up to 2 million new jobs by 2020 Boost R&D & markets for EU global leadership Competitiveness Security of Sustainability Reduce CO2 emissions supply Limit environmental degradation Reduce EU’s energy dependence Reduce investments in energy infrastructures Improve the energy trade balanceEnergy audit and energy certification And the comprehensive set of european policies & measures in place to address energy efficiency in all its aspects EUROPEAN ENERGY EFFICIENCY POLICIES & MEASURES Energy Efficiency Plan International Programmes Targets & networks cooperation Financial R&D tools Energy efficiency legislation “Soft” laws Fiscal toolsEnergy audit and energy certification
  5. 5. Combined with national intentions will not suffice in 400 Mtoe 350 300 EU 20% 250 200 150 Existing 100 national EE targets as 50 of 2011 0Energy audit and energy certification To tap the remaining economic energy saving potentials for 2020 throughout the sectors Savings expected to be achieved with already existing measures Remaining saving potential to be addressed with new measures 29% 11% 16% 2% 5%Energy audit and energy certification
  6. 6. A new impetus is needed: commission puts forward a new energy efficiency directive Public Sectoral House- Energy Services Industry sector measures holds supply Indicative General national EE New measures targets EED promoting EE Monitoring & ReportingEnergy audit and energy certification Public sector to lead by example Status EED proposals • Public sector 19% consumption makes • Purchase of products, services important share of & buildings with high energy EU’s GDP efficiency standards 12% • Share of public • Annual renovation target of 3% buildings in building for public buildings above 250 stock m² • Low average energy performance of • More systematic use of Energy existing buildings Performance Contracting stock, incl. public buildings • Cost optimal renovation can bring up to 60% energyEnergy audit and energy certification savings
  7. 7. Creating benefits for consumers through the provision of tailored energy services and information Status EED proposals • Considerable saving • National energy efficiency potential unused in obligation scheme for utilities the residential and services sectors • Obligation for individual energy • Slow uptake of market meters, reflecting actual energy for energy efficiency consumption & information on services actual time of use • Lack of awareness & access to appropriate information on EE • Ensure accuracy & frequency of benefits billing based on actual • Technological consumption developments (e.g. smart meters/ grids) • Appropriate information with the not sufficiently bill providing comprehensive reflecting households account of current energy costs interestsEnergy audit and energy certification Improving energy efficiency in transformation and distribution of energy Status EED proposals • Fragmented • 10-year national heat & cooling plans: regulations & transparency, predictability & Remaining incentives to address alignment of policies for potential waste across supply investments chain Achieved • Waste heat recovery (CHP) savings • CHP uses 30% less fuel obligation for new and existing for the same amount of power & industrial plants heat & power but level of use in EU low: 11% vs. • Network tariffs design to encourage 21%. offering services for consumers allowing them to save energy & control consumption • New generation installations not systematically • National annual inventories of reflecting level of Best generation installations to monitorEnergy audit and energy certification Available Technologies efficiency levels
  8. 8. Increase awareness for benefits stemming from energy efficiency improvements in industry Status EED proposals • Important share in • Member States to create 28% overall final energy incentives for SMEs to undergo consumption energy audits Remaining • Considerable • Dissemination of best practices on potential progress made but benefits of energy management potential remaining systems for SME businesses Achieved savings • Energy efficient • Mandatory audits for large technologies and companies & incentives for the EE best practices implementation of recommended readily available measures and the introduction ofEnergy audit and energy certification Energy Management Systems Possible time planning after adoption • European Parliament to nominate a rapporteur • First presentation & discussions in the Council Energy July 2011 Working Group under Polish Presidency September • Continuation of discussions in the Council Energy - December Working Group 2011 • Discussion in the EP • Energy Council (November) January – • Achieving of political agreement June 2012 June – • Finalization of the legislative text under the Cyprus December Presidency 2012 • Entering into for force of Energy Efficiency Directive by the end of 2012 December • Implementation of the new Directive in the MS 2013 June 2014 • Assessment of progress towards 20% saving objectiveEnergy audit and energy certification
  9. 9. Certificates for energy savings (“white certificates”)Energy audit and energy certification Establishing long-term synergies between the energy sector liberalization and end-use energy efficiency A possible market-based policy portfolio oriented towards end- use energy efficiency could comprise energy-savings quota for some category of operators (distributors, suppliers, consumers, etc.) coupled with a trading system for energy-efficiency measures resulting in energy savings. The savings would be verified by the regulator and certified by means of the so-called “white” certificates (tradable certificates for energy savings).Energy audit and energy certification
  10. 10. Systems with savings obligations and tradable certificates for energy savings (TCES) in Europe • Four key elements – the creation and framing of the demand, – the tradable instrument (certificate) and the rules for trading, – Institutional infrastructure and processes (such as measurement and verification) to support the scheme. – the cost recovery mechanism in some cases. In Europe variations of this policy mix have been introduced in Italy, Great Italy Britain, and since July 2006, also in France. The Netherlands is Britain France currently considering the implementation of a white certificate system. In Flanders (Belgium) and in Ireland there are savings obligations imposed on electricity distributors without certificate trading option; saving obligations on electricity and heat distributors in Denmark. DenmarkEnergy audit and energy certification White certificates mechanism g s vin Electricity and gas suppliers En Sa e er g yS gy on su El er ati s ec er En blig t /I tri ci vi ce O es C Re ty/ e qu W h d uc Ga R ed s fee Regulatory White Certificates Authority market sk Ri i ce rv Se y e rg Brokers En ESCO’s Other participantsEnergy audit and energy certification
  11. 11. European white certificate systems: general features of the Italian system • Targets in primary energy consumption on electricity and gas grid distribution companies with more than 50,000 customers; • by the end of 2006 the Government is expected to set rules for distributors under this threshold; targets set on an annual basis 2009-2014. • The mechanism is planned to deliver energy savings equivalent to 5,8 millions toe in the five year target period.Energy audit and energy certification Review of experiences with white certificate schemes: eligible projects Italy: all end-use sectors eligible (but “50 % constraint”); an illustrative list of eligible projects; projects contribute to the achievement of targets for up to 5 years (with only some exceptions). So far: generation and distribution systems for various energy carriers (29%); households electricity consumption (28%); energy consumption for heating purposes in the households and the commercial sector (20%) and public lighting (19%). Targets achieved (mostly early action), surplus banked.Energy audit and energy certification
  12. 12. Different systems in europe UK (EEC 2, 2005-2008) Italy FranceUnit of target TWh fuel weighted energy benefits toe, annual TWh Duration 2005-2014 2005-2014 2006-2014current phase Residential consumers only All consumers All consumers Sectoral coverage 50 % from ‘priority group’ (low income 50 % from reduction in own energy Restrictions consumers on social benefits). vector (electricity and gas).Obliged parties Electricity and gas suppliers above Electricity and gas distributors above Electricity, gas, LPG, 50,000 residential customers served 100,000 customers served heat, cold and heating fuel above 0.4 TWh/y Trading No certificates; Obligations can be Certificate trade; traded; Savings can be traded after own Spot market sessions; only bilateral obligation met; No spot market; One-way OTC trading; exchange trade in national emission trading scheme; Institutional Energy regulator AEEG + electricity Ministry of Industry structure market operator GME + ADEME Energy regulator OFGEM Energy audit and energy certification Penalty No specific guidance on how penalty Fixed by the Regulator according to 0.02 Euro/kWh would be calculated; criteria such as: the actual possibility to The penalty can arrive up to 10 % of the meet the target, the magnitude of the non- supplier’s turnover. compliance, the state of affairs of the non- Review of experiences with white certificate schemes: evaluation of savings • Baseline definition • Evaluation approaches Energy audit and energy certification
  13. 13. Saving objectivesEnergy audit and energy certification Baseline definition • Present regulation; • Sales average and performance of the most commonly used appliance on the market “average-on-the-market” (appliances and equipment); • Average consumption of installed stock; • Building stock or equipment stock (e.g. in insulation measures in France);Energy audit and energy certification
  14. 14. Measurement and verification: Italy 3 valuation (measurement and verification, M&V) approaches: • deemed savings approach with default factors for free riding, delivery mechanism and persistence: no on-field measurements required; • engineering approach, with some on-field measurement, • a third approach based on monitoring plans: comparison of measured or calculated consumptions before and after the project, taking into account changed framework conditions (e.g. climatic conditions, occupancy levels, production levels); all monitoring plans must be submitted for pre-approval to the AEEG and must conform with pre-determined criteria (e.g. sample size, criteria to choose the measurement technology, etc.) Most of the projects submitted to date are of the deemed saving and engineering method variety. There is ex-post verification and certification of actual energy savings achieved (yearly)Energy audit and energy certification Watt-hour (Wh) meters & What Would Have Happened (WWHH) meters What Would Have Happened Meter WWHH meter 1,000,000 750,000 kWh 500,000 Baseline Period Performance Period 250,000 Watt-hour MeterEnergy audit and energy certification
  15. 15. Types of TEE There are 3 different types of White CertificatesI type: reduction in the final use of EE;II type: reduction in the final use of nautral gas;III type: reduction in the final use of energy for transportation. Types of projects (definizione ) Standard projects(according to a technical schede decided by the authority) The saving are calcolated for number of devices (UFR) thatare object of the intervention (es.: number of burnersinstalled, m2 of windows replaced); Analytical projects (according to a technical schede decided by the authority) The savings are calculated with a simple algorithm andsome few operating parameters. Non-standard project (according to a proposal of measurement plan (pppm)presented by the ESCO)
  16. 16. Minimum dimensions of a project Every project must demonstrate a minimum account of savinf in order to obtain the TEE Tipologia di Soggetti obbligati Soggetti volontari progetto Standard 25 tep/anno Analytical 100 tep 50 tep Non standard 200 tep 100 tep Il rispetto della dimensione minima viene verificato solo nell’ambito della prima richiesta di verifica e certificazione dei risparmi energetici (RVC).Energy audit and energy certification TEE duration La vita utile, definita nell’ambito dei decreti 20.7.04 è pari a: 10 years for high efficiency cogeneration, (art. 30 comma 11 della Legge 23 luglio 2009, n. 99); 8 years for saving in civil application (windows, insulation, bioclimatization, and so on); 5 years in other cases.Energy audit and energy certification
  17. 17. Some example of standard schede•Scheda tecnica n. 17* Installazione di regolatori di flusso luminoso per lampade a vapori di mercurio e lampade a vapori di sodio ad alta pressione negli impianti adibiti ad illuminazione esterna; •Scheda tecnica n. 5* Sostituzione di vetri semplici con doppi vetri; •Scheda tecnica n. 6* Isolamento delle pareti e delle coperture; •Scheda tecnica n. 7* Impiego di impianti fotovoltaici di potenza elettrica inferiore a 20 kW; •Scheda tecnica n. 8* Impiego di collettori solari per la produzione di acqua calda sanitaria;•Scheda tecnica n. 19* Installazione di condizionatori ad aria esterna ad alta efficienza con potenza frigorifera inferiore a 12 kWf;•Scheda tecnica n. 20* Isolamento termico delle pareti e delle coperture per il raffrescamento estivo in ambito domestico e terziario;•Scheda tecnica n. 23 Sostituzione di lampade semaforiche a incandescenza con lampade semaforiche a LED;• Scheda tecnica n. 24 Sostituzione di lampade votive a incandescenza con lampade votive aLED;Energy audit and energy certification Laste standard schedes (2011) Scheda tecnica n. 28 - Realizzazione di sistemi ad alta efficienza per l’illuminazione di gallerie autostradali ed extraurbane principali; Scheda tecnica n. 29a - Realizzazione di nuovi sistemi di illuminazione ad alta efficienza per strade destinate al traffico motorizzato; Scheda tecnica n. 29b - Installazione di corpi illuminanti ad alta efficienza in sistemi di illuminazione esistente per strade destinate al traffico motorizzato.Energy audit and energy certification
  18. 18. Obatained savings From 1° january 2005 to 31 december 2010: - 8,0 milions T.e.p. saved. - 21,5 milions tonn CO2 avoided. “The authority estimates that every white certificate has obtained saviongs from 118 to 587 euro/Tep, with a cost from 89,92 to 100 euro/Tep.”Energy audit and energy certification Energy Service Companies (ESCo)Energy audit and energy certification
  19. 19. Definition of Energy saving • energy service – means the physical benefit, utility or good derived from a combination of energy with energy-efficient technology or with action, which may include the operations, maintenance and control necessary to deliver the service, which is delivered on the basis of a contract and in normal circumstances has proven to result in verifiable and measurable or estimable energy efficiency improvement or primary energy savings;Energy audit and energy certification Definition of Energy performance company • energy performance contracting – means a contractual arrangement between the beneficiary and the provider of an energy efficiency improvement measure, verified and monitored during the whole term of the contract, where investments (work, supply or service) in that measure are paid for in relation to a contractually agreed level of energy efficiency improvement or other agreed energy performance criterion, such as financial savings. energy service provider means a natural or legal person who delivers energy services or other energy efficiency improvement measures in a final customers facility or premises;Energy audit and energy certification
  20. 20. FTT with financing by the clientEnergy audit and energy certification FTT with financing by the ESCOEnergy audit and energy certification
  21. 21. Build-Own-Operate & Transfer (BOOT) contract Customer & Power Grid Special Purpose Corporation Asset Equity & Ownership & ESCO Non-recourse Management Debt Repayment Turnkey Plant Design/Build Performance Guarantees Fuel Procurement Plant O & MEnergy audit and energy certification Italian requirements for ESCo • For the italian law the requirements ne3cessary to become an energy service provider are very low: a company has only to have the phrase “energy service” on its Chamber of Commerce company registration • In order to increase the professional level of the ESCo the UNI (Ente Nazionale Italiano di Unificazione) has introduced a specifica standard: • UNI CEI 11352 "Società che forniscono servizi energetici (ESCO) - Requisiti generali e lista di controllo per la verifica dei requisiti“ • (general requirements and check list)Energy audit and energy certification
  22. 22. UNI 11352:2010 • At the moment there are about 20 ESCo certified according to this standards • A new law of march 2012 obblige the Public administration to buy energy services only by ESCo that have the requirement specified in the UNI 11352; • (if an ESCO is certified the requirements are automatically verified)Energy audit and energy certification Energy manager (D. Lgs. 10/1991) and Energy expertEnergy audit and energy certification
  23. 23. Energy Manager • From the law 10/1991 every firm with a total consuption of – More than 10.000 TOE for the industrial firm; – More than 1.000 TOE for other sector; • must nominate an Energy Manager. • The Energy Manager is in charge for the rational (=efficient) use of the energy and must support the high management in every decision regarding the energy production and use.Energy audit and energy certification Calculation of the total consuption • The conversion factors for •Gasolio 1 t = 1,08 tep •Olio combustibile 1 t = 0,98 tep the calculation of the total •Gas di petrolio liquefatto (GPL) 1 t= 1,10 tep energy consuption are •Benzine 1 t = 1,20 tep established by law: •Carbon fossile 1 t = 0,74 tep •Carbone di legna 1 t = 0,75 tep •Antracite e prodotti antracinosi 1 t = 0,70 tep •Legna da ardere 1 t = 0,45 tep •Lignite 1 t = 0,25 tep •Gas naturale 1000 Nm3 (*) = 0,82 tep Consumo in tep = 0,23 x consumo in MWh (*) se in alta o media tensione Consumo in tep = 0,25 x consumo in MWh (*) se in bassa tensioneEnergy audit and energy certification
  24. 24. Calculation exampleEnergy audit and energy certification Calculation exampleUso Consumo EE Consumo Consumo Consumo Totale (TEP/anno) metano gasolio pellet (TEP/a incidenza (TEP/anno) (TEP/anno) (TEP/anno) nno)Produzione 3,4 75,6 79,0 40,7%vapore ---- ----Produzione 40,9 40,9 21,1%Linea 1 ---- ---- ----Produzione 38,0 38,0 19,6%Linea 2 ---- ---- ----Produzione 23,0 23,0 11,9%Linea 3 ---- ---- ----Logistica 6,7 6,7 3,5% ---- ---- ----Uffici 2,1 4,3 6,4 3,3% ---- ----Energy audit and energy certification Totale 194,0 100%
  25. 25. Energy Expert • Furthermore to the traditional Energy Manager (that is usually a worker of the company) the UNI has introduces also a new figure, an “energy expert”, a professional that has certified his knowledge with a specific exam. • UNI CEI 11339:2009 "Gestione dellenergia. Esperti in gestione dellenergia. Requisiti generali per la qualificazione • (Energy management expert. Requirements for the qualification)Energy audit and energy certification Energy expert • At the moment there are 40 energy expert certified in Italy. • The professional value of the certification is little recognized from the market • Nevertheless in the short future they could have a strong development: for istance the ESCo certified according to UNI 11352 must have a certified Energy Expert in their organization chartEnergy audit and energy certification
  26. 26. Energy expert in an ESCoEnergy audit and energy certification Certification of the Energy Management System ISO 50001:2011Energy audit and energy certification
  27. 27. The new ISO 50001 standard • In June 2011, the International Organization for Standardization released ISO 50001, a standard for energy management systems • The standard aims to help organizations establish the systems and processes to improve their energy performance, including efficiency and consumption. The standard is applicable to all types and sizes of organizations. • The standard has replaced the european standard EN 16001:2009.Energy audit and energy certification What can an Energy Management System do for your company? • Save money with improved operational efficiencies • Decrease your energy intensity • Provide data for fact based decisions • Give support for organizational and cultural change • Reduced environmental impact • Visible demonstration of corporate social responsibility • Positioning for future carbon accounting, regulations and taxes • Positioning for future supply chain requirementsEnergy audit and energy certification Copyright (Purdue Research Foundation 2010)
  28. 28. Industrial Energy Efficiency BenefitsEnergy efficiency has demonstrated, time and again, that It saves industrial firms money It increase reliability of operations It has a positive effect on productivity and competitiveness It can offer attractive financial and economic returns Reduces exposure to rising energy prices Increases security of supply …. then Why it is not happening?Energy audit and energy certification Barriers to greater energy efficiency • Management focus is on production and not on energy efficiency • Lack of information and understanding of financial and qualitative benefits • First costs are more important than recurring costs disconnection between capital and operating budgets • Lack of technical training on systems energy efficiency (energy and management) • Technical knowledge exists resides with individuals rather than with the organization sustainability risk • Poor monitoring system and data for overall operationsEnergy audit and energy certification
  29. 29. Barriers to greater energy efficiency • Management focus is on production and not on energy efficiency • Lack of information and understanding of financial and qualitative benefits • First costs are more important than recurring costs disconnection between capital and operating budgets • Lack of technical training on systems energy efficiency (energy and management) • Technical knowledge exists resides with individuals rather than with the organization sustainability risk • Poor monitoring system and data for overall operationsEnergy audit and energy certification Industry and Energy Management • Most energy efficiency in industry is achieved through changes in how energy is managed in an industrial facility, rather than through installation of new technologies; • Actively managing energy requires an organizational change in culture • Top management needs to be engaged in the management of energy on an ongoing basis. • At its core, energy management requires a group of people to change their behavior and sustain the change Scope of energy management facilities equipment personnel systems processesEnergy audit and energy certification 58
  30. 30. Business Benefits Implementation of an energy management plan assists a company to: •Actively managing energy use and costs, reducing exposure to rising energy costs •Reduce emissions without negative effect on operations •Continual improvement of energy intensity (energy use/product) •Document savings for internal and external use (e.g. emission credits) •Utilize company personnel and resources wiselyEnergy audit and energy certification Energy Management Results • Companies who have used energy management to achieve major energy intensity improvements1 include: – Dow Chemical achieved 22% improvement ($4B savings) between 1994 and 2005, and is now seeking another 25% from 2005 to 2015 – United Technologies Corp reduced global GHG emissions by 46% per dollar of revenue from 2001 to 2006, and is now seeking an additional 12% reduction from 2006 to 2010 – Toyota’s North American (NA) Energy Management Organization has reduced energy use per unit by 23% since 2002; company-wide energy-saving efforts have saved $9.2 million in NA since 1999. 1 Btu/lb of productEnergy audit and energy certification 60
  31. 31. Why an Energy Management Standard? An energy management system (EnMS): • Strengthens management focus on energy • Creates awareness /encourages commitment across a company/organization • Introduces and sustains a systematic approach to efficiency • Requires management commitment of resources appropriate to the goals of the EnMS • Is based on measurement • Provides continuity through changes in personnelEnergy audit and energy certification Ad hoc approach to energy management…Energy audit and energy certification Source: UNIDO 2010
  32. 32. Structured Approach Senior management commit to program Costs Initial savings +5% sustained 0 -5% Housekeeping first – then investment -10% Becomes company -15% culture -20% Investment -25% 0 Years 3Energy audit and energy certification Source: UNIDO 2010 What can an EnMS achieve? • Most industrial enterprises that have implemented EnMS achieved average annual energy intensity reductions of 2.0- 3.0% against the 1.0% reduction of business as usual (Ireland, Netherlands, Denmark, USA) • However, for companies new to energy management, savings during the first 2 years are 10-20% • EnMS accelerate adoption of energy efficient best-practices and technology upgrades, enhancing productivity and competitiveness An EnMS improves a company’s bottom lineEnergy audit and energy certification
  33. 33. Benefits of a ISO 50001 system • Interoperability - ISO 50001 is based on the plan-do-check-act approach, as used in ISO 14001 and other management systems standards. • Promote Energy Management and Performance in organizations - Create transparency on the management of energy resources • Promote Energy Savings - Assist organizations in making better use of their existing energy-consuming assetsEnergy audit and energy certification The PDCA cycleEnergy audit and energy certification
  34. 34. Energy performance • Energy performance is a larger concept than the simply energy consumptionEnergy audit and energy certification Energy planning processEnergy audit and energy certification
  35. 35. Energy review: some examples • Evaluate existing power consumption and metrics – Utility bill analysis – Benchmarking – HVAC/Mechanical system audit – Evaluate gas requirements (process & heating systems) – Evaluate ventilation (efficiency & effectiveness) – Controls (programmable thermostats, etc.)Energy audit and energy certification Energy review: some examples • Electrical system audit – Motor efficiency / type – Variable frequency drives – Lighting (systems, bulb type, controls) • Process system audit – Process improvement – Operations optimization – Efficiency planningEnergy audit and energy certification
  36. 36. Energy audit according the UNI/TR 11428Energy audit and energy certification UNI 11428 • Following the other standards on energy management (UNI 11339, UNI 11352, and so on) UNI has decided to introduce a specific standard on energy audit • UNI CEI/TR 11428:2011 "Gestione dellenergia - Diagnosi energetiche - Requisiti generali del servizio di diagnosi energetica“ • (Energy audit – general requirements for energy audit service) • In the following slides there will be a brief description of the energy audit requirements.Energy audit and energy certification
  37. 37. Types of Energy Audits DEMAND vs SUPPLY • UNI 11428 and ASHRAE Energy Audits – Level I (Walk-Through Analysis) – Level II (Energy Survey & Analysis) – Level III (Detailed Analysis of Capital – Intensive Modifications, aka Process Audit) • Renewable Energy Assessments – Simple Discussion of Alternatives – Desktop Analysis – Feasibility StudyEnergy audit and energy certification 73 THE GOALS: Address both Demand & Supply • Possibly all facilities will have Level II or Level III audit – Uncover operational and equipment changes for efficiency – These audits are NOT free, but have very fast paybacks • Possibly all facilities will discuss renewable energy options and have a desktop analysis of promising alternatives – Feasibility studies performed where potential exists for significant energy production • All facilities will use BOTH to develop a prioritized action list to guide their next stepsEnergy audit and energy certification 74
  38. 38. Other names/types of audits • Evaluate existing power consumption and metrics – Utility bill analysis – Benchmarking • HVAC/Mechanical system audit – Evaluate gas requirements (process & heating systems) – Evaluate ventilation (efficiency & effectiveness) – Controls (programmable thermostats, etc.) • Electrical system audit – Motor efficiency / type – Variable frequency drives – Lighting (systems, bulb type, controls) • Process system audit – Process improvement – Operations optimization – Efficiency planningEnergy audit and energy certification 75 The Auditor’s Toolkit • Building Loads Analysis and • eQuest Systems • Elite CHVAC • Steam System Scoping Tool • 3E Plus • GENLYTE GENESIS II • SKM Power Tools • COM Check-E2 3.0 Release I • Cummins Power Generation Power Suite • Motor Master + 3.0 • Caterpillar Electric Power Design Pro • Pumping Assessment Tool (PSAT) • NYSERDA Checklists • AIR Master + • EPA audit tool (draft) • InfoWater SchedulerEnergy audit and energy certification 76 76
  39. 39. Important Terms in Mass • Utility = The energy (electric or gas) provider. • PA = Program Administrator = MA investor-owned utilities (not MLPs). Required by Green Communities Act to identify and implement efficiency projects. • Identification of Energy Efficiency Opportunities = ~ Level I auditsEnergy audit and energy certification Walk Through Audit (Level I) • DURATION: Several hours in the facility • PRODUCT: Usually suggestions for low cost improvements to lights/HVAC • RESULTS: Quick payback projects that take advantage of utility rebatesEnergy audit and energy certification 78
  40. 40. Energy Survey and Analysis (Level II) • DURATION: Several hours in facility plus additional time to review energy bills, etc. • PRODUCT: Suggestions for low cost improvements to lights/HVAC and equipment upgrades in existing processes (e.g., VFDs, premium efficiency motors) • RESULTS: Quick payback projects that take advantage of utility rebatesEnergy audit and energy certification 79 Process Energy Audit (Level III) • DURATION: One or more days in the facility, time to analyze energy bills, develop pump curves, and possibly several weeks of data gathering • PRODUCT: – Energy use in existing processes, alternative processes – Potential design modifications – Optimization of processes, equipment, design modifications • RESULTS: Detailed operational and process suggestions with both short and long paybacks, some capital-intensive projects may require outside funding sources. Most likely to result in significant savingsEnergy audit and energy certification 80
  41. 41. Renewable Energy Assessments • Start small (discussion) and end large (€ 100k+ feasibility studies) • Some energy auditors will do some level of renewable energy assessment, usually discussion and desktop analysis with recommendations for further study • Renewable energy projects usually only cost-effective AFTER all energy efficiency projects are completed.Energy audit and energy certification Audit Results: One Size Does Not Fit All FACILITY AUDIT TYPE, AUDIT COST (free ANNUAL ENERGY ANNUAL SAVINGS NAME LENGTH audits no longer COST standard) Barnestable Level I-II, 8 pgs Free via utility Not calculated $32,422 Edgartown (audit 1) Level II, 56 pgs Free via utility $209,328 $17,728 Edgartown (audit 2) Level II, 170 pgs Free via utility Not calculated $42,082 w/specs GLSD Level III, 117 pgs ~$50,000 (split with $3,286,000 $1,028,000 utility) Name Withheld (CT Level III plus ~$25,000 $319,000 $55,000 efficiency, Water Facility) Desktop additional potential fromEnergy audit and energy certification Renewables up to 530 KW 82 renewables
  42. 42. Two types of audits Projected Annual Savings Level II Building and Equipment Level III (Process) Walkthrough Audit Shut off computers, copiers nights/weekends $ 600 $ 600 Use Energy saver mode on Computers, copiers $ 250 $ 250 Lighting upgrades $ 500 $ 500 Upgrade Domestic HW system $ 2,000 $ 3,000 Install VFD on aeration blowers $ 20,000 . Redesign Aeration system, install DO controls $ 50,000Energy audit and energy certification 83 Level II audit results – Estimates of power usage by equipment type – No detailed analysis of equipment specs and performance – Estimates of implementation cost and payback – Simple low cost solutions but less savingsEnergy audit and energy certification 84
  43. 43. Level III (Process) Audit Results • Process Energy Audit report includes: – Review of energy use and rates – Energy balance – Pump systems evaluation – Process systems evaluation – Recommendations: Operational & Energy Conservation – Cost benefit analysis of proposed projects – Higher cost savingsEnergy audit and energy certification 85 Energy Balance example WWTF Electric Energy Breakdown Building Systems Prelim/Primary Treatment Plant Water & Disinfection 2% 7% 8% Sludge Drying 11% Sludge Thickening/Dewatering 12% Biological System 37% Digestion 14% Secondary/RAS Pumps 9%Energy audit and energy certification 86
  44. 44. Cost savingEnergy audit and energy certification 87 Review • All facilities will benefit from an audit • Audits vary in size, scope, complexity, and cost • PAs will help you fund audits and projects • Renewable energy assessments are important but should come after efficiency projects • Audits that don’t lead to completed projects don’t save any energyEnergy audit and energy certification
  45. 45. Thank you!Energy audit and energy certification