Development of Legal Metrology Requirements for Electric Vehicle Fueling & Submetering V2G/PAP-22 Nashville, TN September 15, 2014 NIST USNWG on Electric Vehicle Fueling & Submetering Juana Williams, Technical Advisor NIST Office of Weights & Measures 1

Overview NIST U.S. National Work Group (USNWG) Electric Vehicle Fueling & Submetering NIST Handbook (HB) 44 Code - Proposal Test Equipment & Test Procedures U.S. Weights & Measures Standards Development Process Questions Certain commercial entities, equipment, or materials may be identified in this presentation in order to adequately describe a procedure or concept. Such identification is not intended to imply a recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the entities, materials, or equipment are necessarily the best available for that purpose. 2 NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

NIST USNWG on Electric Vehicle Fueling & Submetering USNWG established August 2012 ◦ Regulators, equipment manufacturers, suppliers Key Objectives ◦ Method of Sale Requirements  Adopted 2013  Published NIST Handbook 130 (2014)  IV., Part B, Section 2.34 Retail Sales of Electricity Sold as a Vehicle Fuel  NIST OWM available at: 3 *Meters under Weights and Measures authority. NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

NIST USNWG on Electric Vehicle Fueling & Submetering (Cont.) Key Objectives ◦ Device Requirements  Electric Vehicle Fueling Devices (September 2014)  Modifications NIST HB Timing Devices Code  Other Commercial Electric Meters* ◦ Test Equipment & Test Procedures  Subcommittee established January 2013  Chaired by Ted Bohn, Argonne National Laboratory  Parallels Code Development  Final Draft N. (Notes) Section (August 13, 2014) 4 *Meters under Weights and Measures authority. NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

Device Requirements - Draft Draft NIST Handbook 44 Code ◦ Initial NIST draft drawn from ANSI C12 and CA Regs ◦ Draft has evolved to focus on specific EVF application Separate codes: ◦ Electric Vehicle Fueling Devices (EVFD) ◦ Other Commercial Electric Meters USNWG intensive review and revision ◦ Met target date for completion of EVFD Code of September 2014  Submitted draft to regional W&M associations  Recommend to regions that S&T Item be designated as “Voting” in NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

NIST Handbook 44 – Draft Code Electric Vehicle Fueling Devices Transparency to consumer and business ◦ Fair, accurate, equitable transactions ◦ Facilitate value comparisons ◦ Dispenser must be computing type ◦ Display and electronic receipt must show:  Total energy delivered to vehicle  Total cost Must be accurate at the car connector Expect refinements to final draft EVF and Timing Devices Codes as work progresses to national consideration in January NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

Test Procedures Based on EVF Code – Notes (“N”) Section ◦ NIST Examination Procedure Outline ◦ Testing “as-used” is important ◦ Laboratory procedures are also needed for testing new or rebuilt systems Flow Chart To Match Test to Charging Equipment Deployed - by time, by energy, rate of energy transfer and type of current… Safety Practicality 7 NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

Weights and Measures Standards Development 8 NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

Adoption of Legal Metrology Requirements for Device s 9 NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014

NIST Office of Weights and Measures (OWM) Contacts: USNWG Technical Advisor & OWM’s Technical Point of Contact: Juana Williams Tel: USNWG Chair: Tina Butcher Tel: NIST OWM Home Page: NIST OWM USNWG EVF&S Home Page: 10 NIST USNWG EVF&S-WILLIAMS-V2G/PAP-22 SEP2014