Defining Bankability for Each Step of a PV Project Using IECRE

Transcription

1 Defining Bankability for Each Step of a PV Project Using IECRE Sarah Kurtz July 12, 2016 Intersolar North America, San Francisco

2 NREL Mission: Develop clean energy and energy efficiency technologies and prac4ces, advance related science and engineering, and provide knowledge and innova4ons to integrate energy systems at all scales PV reliability: Elucidate the science behind priori4zed reliability issues and apply results to define and implement useful standards NaEonal Renewable Energy Laboratory Golden, CO 2

3 OUTLINE MoEvaEon for creaeon of IECRE: Have confidence that a PV plant will safely perform as promised and reduce cost at the same Eme Strategy (achieve confidence at minimal cost) Steps to confidence (each financial transaceon) Status of implementaeon (available stareng this fall) Encourage you to begin to make use of IECRE!! 3

4 WHY WAS IECRE CREATED? While IEC writes technical standards, IEC does not define how these are used IECRE was formed in 2014 to define how cereficates can be issued at the system level o IECRE serves 3 sectors: Wind, PV, and marine energy o Defines requirements for cerefying bodies, etc. o IdenEfies the technical documents (within IEC or other standards organizaeons) for each cereficate o IniEally, a single cereficate was envisioned, but now plan a cereficate at each stage of development Technical standards CerEficates for system 4

5 Investors want zero risk plus lower prices Technical standards System cereficates The IECRE process ensures that technical due diligence hurdles are cleared. IECRE Pillars Goals: Streamline the due diligence process Leverage what has been learned by others Increase confidence at reduced cost Consensus based standards worldwide Registered & Peer review accreditaeon Consistent/transparent process 5

6 Investors want zero risk, but at low cost: Need balance Risk Cost Challenges: We want everything to be perfect, but we also need to minimize cost; Each customer asks for a different balance and has slightly different goals 6

7 Different systems need different requirements Accuracy requirements defined in IEC * o Class A highest accuracy: (on site POA irradiance measurements required with sensor cleaned periodically) o Class B medium accuracy o Class C lowest accuracy: (OK to use satellite data for irradiance) IECRE system types o U1: UElity Focus discussion on this today o U2: ResidenEal o U3: Commercial o U4: Aggregate (colleceon of small systems) *Details under discussion 7

8 Principles for balancing risk and cost Benefit from standardizaeon o Create and adopt internaeonal standards (only one set) o Learn from each other (define best standards more quickly) Oversight at every stage o Design and planning o ConstrucEon o OperaEon Emphasize consistent quality control: o Require conenuous learning o Don t assume that a single success implies future successes Efficient implementaeon o Don t duplicate inspeceons o Leverage internal quality management aceons 8

9 PV System Timeline and CerEficates (simplified more later) Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Need confidence that each step during a project is completed correctly For simplicity, today we will discuss four steps: o Design qualificaeon (ready to proceed with construceon) o SubstanEal compleeon (ready to operate) o Annual performance (final compleeon, or annual check up) o Asset transfer (define health of plant as basis for acquisieon) 9

10 PV System Timeline and CerEficates (simplified more later) Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Example consideraeons Local code requirements met Component o Qualified for o Quality control during manufacturing Safety: o Restricted access if appropriate o ConEnuously monitored o Overcurrent proteceon Good design o Shading considered o Trenching 10

11 PV System Timeline and CerEficates (simplified more later) Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Example consideraeons Local code requirements met Commissioning completed Component quality verified Quality management during o Workers trained with oversight o Any design changes reviewed o Con@nuous improvement Performance check o Does power output match the design? 11

12 PV System Timeline and CerEficates (simplified more later) Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Example consideraeons Based on measured weather and original model, does plant perform as expected? o Energy availability (e.g. if inverters break, the plant could be off line and unavailable) o Performance index (measured performance divided by expected performance based on measured weather) O&M costs o RelaEve to planned cost, how much did it cost to keep the plant running? 12

13 PV System Timeline and CerEficates (simplified more later) Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Example consideraeons Has plant output been consistent with original model? Have O&M costs been consistent with original model? Is there evidence of problems to come? (Cracked cells, weeds growing through the modules, hot spots) 13

14 Data documentaeon from steps in Emeline Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Data documentaeon propose to align with XBRL Model assumpeons Annual performance o Energy availability o Performance index o Annual O&M costs Many other details (current list includes over 200 items, including informaeon from each cereficate, dates of compleeon, local informaeon, and financial details) 14

15 ImplementaEon of IECRE EffecEve implementaeon requires: o Defining WHAT will be implemented (technical details) o Defining HOW it will be implemented (who has authority to say yes, this meets the requirement?) Consistent implementaeon in all countries is required for an IECRE cereficate to have meaning Once implemented, staesecs will help to define the outcomes associated with using this approach 15

16 Status of IECRE ImplementaEon who can parecipate? Progress of implementaeon can be tracked at hpp:// (OD-401, OD-402, etc. are PV-specific documents) First, define who has authority to do PV plant inspec4ons: o OD-406: Provides applicaeon form to become an IECRE CerEficaEon Body or an IECRE InspecEon Body o Applicants must agree to follow IECRE documents o Applicants must agree to peer-review process Requirements for inspectors of PV module factories are described in OD

17 Status of Design QualificaEon CerEficate ImplementaEon Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Status Technical requirements are being defined: Module o IEC Qual. Test: new just published o IEC Safety Test: new edi@on will be published this fall o Addi@onal changes are in the works o IEC Quality control during manufacturing: published PV plant design guidelines: o IEC Small systems guidelines published by end of 2016 o IEC UElity-scale systems guidelines published in 2017 IECRE documents under development 17

18 Status of SubstanEal CompleEon CerEficate ImplementaEon Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Status IEC Commissioning new edieon published IEC Quality management for process in development, will be published in 2017 IEC Capacity test planned to be published by end of 2016 IECRE OD-401 Published will be updated soon 18

19 Status of Annual Performance ImplementaEon Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Status IEC Energy test in press IECRE OD-402 Published; revision will be published soon 19

20 Status of Asset Transfer ImplementaEon Project Timeline Design QualificaEon SubstanEal CompleEon Annual Performance Asset Transfer Status Development at concept stage Some of the pieces are completed, but the pieces have not all been defined 20

21 Plans for standardized data base Orange Bupon Solar bankability data to advance transaceons and access (SB-DATA) Funded by DOE o Smart Grid Interoperability Panel (SGIP) hpp:// o SunSpec Alliance hpp://sunspec.org/sunspec-osdx/ o kwh AnalyEcs hpp:// o NREL hpp:// Data set for solar asset performance metric hpp:// Will be meeeng in person in San Francisco July 13-14,

22 Summary IECRE value and status IECRE internaeonal standards are being developed to o Increase confidence in PV plant performance and safety o Reduce costs First cereficates may be issued by end of 2016 it s &me to start including these requirements in new procurements Development will be ongoing, but the foundaeonal pieces should all be available in 2017 To track progress, monitor documents (no cost) at: hpp:// Your suggeseons and support in wrieng/reviewing documents would be welcome! 22

23 Thank you!