Logistic information for the EVE IWG Tokyo meeting in hybrid format scheduled for 16–17 February 2027 at Hibikoku Conference Square. Provides venue address, access information via nearby metro stations, accommodation options, and visa exemption information for 74 countries and regions.

The agenda includes:

• A presentation from the Battery Swapping Task Force,
• Proposal on introduction of UBE certified in templates for information document and WLTP test report,
• UN GTR 25 status update and priority items discussion,
• UN GTR 21 status update and priority items,
• OICA comments,
• Proposals for more efficient test procedures,
• UN GTR 22 status update and priority items.

Report of the 100th EVE IWG session held October 13, 2026. The group discussed UN GTR 22 status and proposed amendments to UN Regulations Nos. 83 and 154 concerning usable battery energy (UBE) and State of Certified Energy (SOCE) values; UN GTR 21 amendments extending scope to fuel cell electric vehicles (FCEVs), replacing driver/accelerator command terminology, and reducing sampling frequency to 10 Hz, with target completion December 2027; and UN GTR 25 amendments addressing minimum performance requirements (MPRs), energy throughput, and Part C virtual distance verification. Japan proposed amendments to UN Regulation No. 177 for ICE power output references. The F&SC received a one-year mandate extension to continue validation activities and address outstanding issues on smart charging test procedures and key performance indicators.

Proposal to establish a new Amendment to UN Global Technical Regulation No. 25 on in-vehicle battery durability for electrified heavy-duty vehicles. The GTR provides harmonized methods to determine battery durability performance of HD-PEVs and HD-OVC-HEVs, including requirements for State of Certified Energy (SOCE) monitors, minimum performance requirements expressed as SOCE values at specific vehicle lifetime points, and in-use verification procedures with Parts A and B to verify monitor accuracy and battery durability compliance respectively. The document includes test procedures for usable battery energy determination via driving on test tracks, road driving, bidirectional power supply systems, or chassis dynamometer testing, family definitions for monitor and battery durability verification, vehicle survey requirements, and data collection specifications.

Session agenda for the 100th meeting of the Electric Vehicles and the Environment Informal Working Group on 13 October 2026. The agenda covers status reports and presentations on UN GTR 22, UN GTR 21, and UN GTR 25, with discussion of Euro 7 review clause, readiness monitoring, and regulatory topics including MPRs, energy throughput, and Part C virtual distance verification.

Document summarizes ongoing revisions to minimum performance requirements (MPRs), lifetime, and metric requirements for heavy-duty vehicles under GTR 25 Optional Annex 4. Proposes modifying lifetime thresholds (years and kilometers), adding intermediate verification at 5 years to enable early detection of battery-degradation risks, and segmenting MPR thresholds by vehicle category and mission profiles for categories M₁–M₃ and N₁–N₃. Presents vehicle operation data from Chinese manufacturers, capacity retention analysis, energy throughput metrics, and feasibility assessments of 5-year MPR limits with proposed MPR values of 75% covering 98% battery-durability performance.

Proposal to amend UN GTR No. 25 by modifying requirements for State-of-Certified Energy (SOCE) monitors, battery performance requirements, in-use verification procedures for Parts A, B, and C, and related test procedures and annexes. The GTR establishes harmonised methods to determine in-vehicle battery durability performance of Heavy-Duty Pure Electric Vehicles (HD-PEVs) and Heavy-Duty Off-Vehicle Charging Hybrid Electric Vehicles (HD-OVC-HEVs) of categories 1-2 and 2 exceeding 3,855 kg technically permissible maximum laden mass. The document includes tracked changes to Amendment 1 (WP.29/2026/209), with sections subject to discussion or decision indicated in square brackets and strikethrough text denoting proposed deletions.

Report on the 95th GRPE session presenting progress updates for UN GTR No. 21 (Determination of Electrified Vehicle Power), UN GTR No. 22 (In-vehicle Battery Durability for Electrified Light-Duty Vehicles), and UN GTR No. 25 (In-vehicle Battery Durability for Electrified Heavy-Duty Vehicles). The IWG on EVE reported on Phase 4 objectives and amendments for GTR 21 and 22, with consideration targets of March 2028, and Phase 3 amendments for GTR 25 with consideration target of March 2027. Future work includes investigations into charging power curves, development of a new WP.29 resolution on DC Fast Charge Power Curve performance, and an inventory on harmonization of recharging capabilities.

Proposal to modify test procedures for the Alternative Method using heavy-duty chassis dynamometer to determine Usable Battery Energy (UBE) and battery durability requirements for electrified heavy-duty vehicles. Changes include specifications for dynamometer settings, test room conditions, cooling fan requirements, driver breaks, battery preparation and pre-conditioning, soak and charge procedures, discharge test cycles for both plug-in electric vehicles (HD-PEVs) and optimized charge-sustaining hybrid electric vehicles (HD-OVC-HEVs), test termination criteria, and measurement device requirements. The document provides test procedures, tables for driver break allowances based on distance and driving time, and detailed formulas for calculating battery energy changes and break-off criteria.

Document presents preliminary views on minimum performance requirements for in-vehicle battery durability under Euro 7 heavy-duty vehicle standards. It outlines implementation timeline for the OMNIBUS proposal in first and second phases, with application dates of 1 January 2030 for the first phase and 1 January 2035 for the second phase. Brake emissions and tyre abrasion requirements are addressed, including UN Regulation No. 186 application dates for C2 and C3 class tyres. Reporting and review provisions under Article 18 are included. The document notes that the order of items and timeline indications are preliminary and for discussion purposes only.

Proposal to amend GTR 25 by modifying requirements for State-of-Certified Energy (SOCE) monitors, battery performance, and in-use verification procedures for heavy-duty electrified vehicles. The amendment refines test procedures for usable battery energy determination through four methods (Methods 1a, 1b, and 2, and an alternative chassis dynamometer method), updates measurement requirements and accuracy specifications, clarifies vehicle selection criteria during certification and Part A verification to establish worst-case configuration by highest UBE value, increases temperature tolerance during test soak to 7°C for improved applicability, revises Annex 2 to reflect additional regional regulatory requirements, and improves descriptions of test methods to enhance applicability and accuracy of results. Implementation occurs following entry into force as specified in regional provisions.

JRC contribution to the EVE IWG on GTR No. 25 virtual distance verification. The document presents verification procedures based on energy throughput and virtual distance for stationary and dynamic tests. It discusses reading on-board values including virtual distance, propulsion energy, total energy throughput, and odometer readings. The document identifies outstanding questions regarding feasibility of using on-board values versus measured values, separation of stationary and dynamic test cases, and measurement approaches for V2X, PTO, and non-traction purposes energy.

OICA presents comments and proposals on UN GTR 25 discussion items for the 100th session of the EVE informal working group. Topics include test procedures and approaches, a standardized 50 km virtual driving distance for Power Take-Offs, simplification of calculation formulas, a PTO family concept with predefined power classes, handling of body builder PTOs, minimum power thresholds, High Power Resistor energy consideration, measurement accuracy, and default values for auxiliaries. OICA indicates agreement on certain items, identifies areas requiring correction or further discussion, and outlines Phase 3 priorities.

Terms of Reference for the UNECE EV fast- & smart-charging cluster, a joint activity of WP.5 e-mobility Task Force and the IWG on EVE. The cluster aims to promote user-friendly, safe and scalable adoption of fast and smart charging functionalities of electric vehicles and their integration in the energy system. Task A develops a new WP.29 resolution on DC Fast Charge Power Curve (FCPC) of electric vehicles in three phases: Phase 1 establishes a harmonized test procedure for light duty vehicles; Phase 2 develops requirements for consumer information and minimum performance requirements; Phase 3 investigates expansion to heavy duty applications. Task B inventories the need for harmonization of other recharging capabilities and recharging documentation, including collecting existing international standards and initiatives, identifying discrepancies and gaps, and issuing a harmonized standardization/regulatory roadmap for smart and bi-directional charging of EVs by vehicle category. Chairmanship is held by The Netherlands from January 2025 to October 2027.

This document addresses open issues regarding the Fast Charge Power Curve Resolution draft still under technical discussion where no consensus has been reached by the F&SC Cluster at submission of ECE/TRANS/WP.29/GRPE/2026/52. Open points cover measurement system requirements, test vehicle conditions, test preparation, vehicle preparation phase, parameter definitions, test evaluation tolerance criteria, and data processing and calculation of KPIs including maximum charging power, average charging power in 10–80% SoE range, power curve from 10% SoE to full charge, charging duration, and recharged energy or range in 10 minutes.

Working draft proposal to:

• Establish harmonized methods to determine in-vehicle battery durability performance of heavy-duty pure electric vehicles and heavy-duty off-vehicle charging hybrid electric vehicles,
• Introduce State-of-Certified-Energy monitors that estimate battery health throughout vehicle lifetime,
• Define minimum performance requirements for battery durability in an optional annex,
• Establish test procedures for usable battery energy determination via test track driving, on-road driving, bidirectional power supply systems, or chassis dynamometer testing,
• Implement a two-part in-use verification process verifying monitor accuracy and battery durability compliance through statistical sampling,
• Collect field data to inform future revisions of performance requirements.

Report of the 99th session of the EVE IWG held September 8-9, 2026, covering discussions on UN GTR 21, UN GTR 22, and UN GTR 25. Topics included Japan’s proposal to revise UBE certified value calculations, China’s proposal to incorporate fuel cell vehicles under GTR 21, China’s proposals for vehicle category modifications and minimum performance requirements under GTR 25, Japan’s proposals for measurement requirements under GTR 21, assessment of alternative test methods for GTR 25, and open items across all three GTRs. The group confirmed target dates of March 2028 for GTR 21 and GTR 25 amendments.

Proposal to establish harmonised methods for determining in-vehicle battery durability performance of heavy duty pure electric vehicles and heavy duty off-vehicle charging hybrid electric vehicles. The GTR introduces a State of Certified Energy monitor to track battery health over time, defines minimum performance requirements as optional provisions by contracting parties, and specifies in-use verification procedures in two parts: Part A verifies monitor accuracy through measurement of usable battery energy using four alternative test methods, and Part B verifies battery durability against minimum performance requirements through remote data collection from vehicle samples. Virtual distance calculations account for energy used in vehicle-to-grid, power take-off, and non-traction applications.

The agenda addresses UN GTR 22, UN GTR 21, and UN GTR 25, with discussions on fuel cell vehicle proposals, open items, verification results, alternative test methods, and battery replacement provisions. A reminder notes that UN GTR 25 amendment 2 must be submitted to GRPE-96 by December 2026.

The 98th EVE IWG session held virtually on July 15, 2026, adopted the agenda and discussed Phase 4 priorities for UN GTR 22, including Minimum Performance Requirements, State of Certified Range, conditioning cycles, and mutual recognition. Japan proposed sharing Part C verification results with all Contracting Parties. The IWG reviewed UN GTR 21 and UN GTR 25 status, covering MPRs, energy throughput, virtual distance verification, and battery replacement provisions. OICA will present their MPR position at EVE 100 and share Part C verification results at EVE 99. Japan will consult on hosting 2027 meetings targeting the week of February 15th.

Japan proposes to add a specific requirement for vehicle speed measurement frequency of 20 Hz in Table A3/1 of Annex 3, consistent with UN R154; revise para. 2.4 to clarify that both constant and transient cycles test methods are permitted; delete redundant text from para. 2.4.1 regarding test cycle requirements; and delete from para. 5.1 the requirement that resolution and method for SOCE availability be determined in agreement with authorities, as these are already specified.

Technical report on the development of Amendment 1 to UN GTR No. 25 on in-vehicle battery durability for electrified heavy-duty vehicles. The GTR provides a harmonised methodology to monitor battery health over time and introduces minimum performance requirements for battery durability. Development involved approximately 29 IWG meetings over three years with 50 to 60 attendees. The framework centres on minimum performance requirements for in-vehicle batteries, readable on-board battery health monitors, in-use verification procedures, and data collection processes. Three test methods were adopted for measuring usable battery energy: discharge by driving on test track, discharge by driving on road, and discharge using bidirectional power supply system, plus an alternative chassis dynamometer method. The GTR includes an optional annex with minimum performance requirements based on state of certified energy.

The document addresses Part C verification of virtual distance for heavy-duty vehicle batteries. OICA reports pilot phase results from Volvo Group and Daimler Truck AG testing measurement procedures and accuracy under driving and stationary conditions. Key findings show measurement accuracy decreases significantly at lower power levels, with deviations of 0.3% to 4% at higher power. PTO system characteristics influence accuracy; internal PTOs performed better than bodybuilder-installed units. The document identifies challenges including formula correction needs, PTO family concept complexity, and proposes further testing before finalizing Part C requirements.

This document proposes establishing a unified global testing method for determining system power and torque of heavy-duty hybrid electric vehicles (HD-HEV) and heavy-duty plug-in electric vehicles (HD-PEV). The proposal addresses the lack of standardized test methods by recommending hub-coupled dynamometer testing for vehicles with central drive systems and chassis dynamometer testing for other configurations. Testing should measure 30-minute continuous maximum power and torque under thermal equilibrium conditions. The document includes technical data from battery energy distribution analysis and recommends China lead formulation of this standard using chassis dynamometer verification.

Under GTR 25, a feasibility assessment proposes introducing a 5-year mid-term performance requirement threshold together with corresponding mileage and energy-throughput limits as an intermediate verification checkpoint for battery degradation. Based on analysis of State-of-Health data from vehicles with 5-year life and mileage ranging from 250,000 km to 350,000 km, the MPR value is set at 75%, which can cover 98% battery-durability performance. Specific mileage and energy-throughput limits are established for vehicle categories M₂, M₃, N₂, and N₃.

GTR 25 establishes alternative test and verification methods for heavy-duty vehicle energy consumption. China released test method GB/T 18386.2-2022 based on chassis dynamometers using continuous cycle and shortened methods. Test conditions include temperature of 25°C ± 5°C, initial battery SOC of 20%, and pre-conditioning soak and charge for minimum 6 hours and maximum 36 hours. The torque meter method measures road load without disabling regenerative braking, achieving resistance matching within 5% error. Test verification includes vehicle selection across mileage groups 0, 200,000, 400,000, and 600,000 km, with on-board data collection and sensor accuracy consistency analysis post-durability.

China introduces an assessment of low State of Charge Energy requirements for M-type vehicles using data from city buses and coaches. At low SOCE levels, available energy is reduced, requiring increased initial battery energy capacity to meet customer driving range expectations, leading to higher purchase costs and vehicle weight. China provides reasons supporting SOCE performance targets at an 8-year timeframe, including significant differences in vehicle types, operating conditions, business models, and battery specifications that vary by vehicle type, making uniform standards inefficient.

Proposal to revise the weight threshold of M₃ vehicle category from 7.5 tonnes to 12 tonnes, split N-type trucks into three categories with light-duty trucks below 5 tonnes, medium-duty trucks above 5 tonnes and N₃ below 18 tonnes, and heavy-duty trucks above 18 tonnes, adjust year and mileage limits for N₂, N₃ medium-duty trucks to 8 years or 500,000 km, and establish energy throughput requirements: M₂ 120,000 kWh, M₃≤12t 300,000 kWh, M₃>12t 500,000 kWh, N₂≤5t 200,000 kWh, N₂>5t, N₃≤18t 400,000 kWh, N₃>18t 1,200,000 kWh.

UN GTR No. 25 on In-vehicle Battery Durability for Electrified Heavy Duty Vehicles provides harmonised methods to determine battery durability performance of HD-PEVs and HD-OVC-HEVs of categories M₁–M₃ and N₁–N₃ exceeding 3,855 kg MPLM. The regulation requires manufacturers to install State of Certified Energy (SOCE) monitors throughout vehicle lifetime. In-use verification consists of Part A verification of monitor accuracy through measured UBE testing using Methods 1a, 1b, Method 2 (bidirectional power supply), or an alternative HDV chassis dynamometer method, with statistical pass/fail criteria. Part B verification assesses battery durability against optional Minimum Performance Requirements (MPRs) through remote SOCE data collection from sample vehicles. Part C verification, reserved for future amendment, will address reported virtual distance accuracy for V2X, PTO and non-traction purpose applications. Optional Annex 4 specifies MPRs by vehicle category and mass, ranging from 45–70% SOCE retention across specified timeframes and distances. The GTR entered into force with Phase 1 covering core durability assessment and data collection to support future refinement of MPR thresholds based on in-service field data relating to HDVs, referencing WP.29-170-31 and GRPE/2026/3.

The agenda for the Electric Vehicles and the Environment Informal Working Group 98th session scheduled for July 15, 2026, includes presentations on battery performance, discussions on UN GTR 21, UN GTR 22, and UN GTR 25 regulatory topics including minimum performance requirements, state of charge reference, readiness monitor and conditioning cycles, mutual recognition, fuel cell electric vehicles, highly integrated systems, energy throughput, normal usage indices, and battery replacement provisions. UN GTR 25 amendment 2 must be submitted to March 2027 GRPE with a December 2026 deadline.

Session report of WP.29 (World Forum for Harmonization of Vehicle Regulations), its Administrative Committee of the 1958 Agreement (AC.1), Executive Committee of the 1998 Agreement (AC.3), and Administrative Committee of the 1997 Agreement (AC.4) held 23-26 June 2026 in Geneva. AC.1 voted on 92 amendments to existing UN Regulations, one corrigendum to UN Regulation No. 79, and three new UN Regulations (Nos. 184-186) on liquid hydrogen vehicle safety, automated driving systems, and tyre abrasion performance. AC.3 established UN GTR on automated driving systems and adopted corrigendum to UN GTR No. 9 and Amendment 2 to UN GTR No. 13. WP.29 extended mandates of several informal working groups and noted accession of Mongolia and Armenia to the 1958 and 1997 Agreements respectively.

Proposal to establish harmonised methods for in-vehicle battery durability of electrified heavy-duty vehicles:

• Establish harmonised methods for determining in-vehicle battery durability of electrified heavy-duty vehicles (categories 1-2 and 2 with technically permissible maximum laden mass exceeding 3,855 kg) that are pure electric or off-vehicle charging hybrid electric vehicles,
• Require manufacturers to install and maintain State-of-Certified Energy (SOCE) monitors throughout vehicle lifetime at resolution of at least 1 part in 100, making values available via on-board diagnostics port and optionally over-the-air,
• For Contracting Parties electing to enforce minimum performance requirements from optional Annex 4, require manufacturers to ensure compliance through in-use verification comprising Part A (monitor accuracy verification through measured usable battery energy testing via driving on test track/road or bidirectional power supply system, with statistical pass/fail criteria) and Part B (battery durability verification through remote data collection from vehicle sample of minimum 500 vehicles annually, requiring at least 90 per cent of monitored values above applicable minimum performance requirement or declared performance requirement),
• Reserve Part C verification of virtual distance accuracy for future amendment,
• Specify minimum performance requirements with SOCE retention percentages (45–70 per cent) at defined time and distance combinations varying by vehicle category and mass, to be monitored during phase 1 for potential future revision based on energy throughput data.

The Electric Vehicles and the Environment Informal Working Group held its 97th session on May 19, 2026. Discussions addressed UN GTR 22/25 including Norwegian EV demographics, a proposed Readiness Monitor concept for State of Certified Energy activities, and OICA terminology amendments replacing “monitor” with “assessment of virtual distance” in Part C. The group reviewed Phase 4 priorities for UN GTR 21 and UN GTR 25, including Minimum Performance Requirements, conditioning cycles, and lifetime requirements addressing disconnects between mileage and year thresholds. The next session is scheduled for June 16–17, 2026.

UN GTR No. 25 addresses minimum performance requirements, lifetime requirements, and metrics for heavy-duty vehicles. Lifetime requirements are 12 years and 700,000 km or 15 years and 875,000 km for Category 1-2 vehicles exceeding 7.5 tonnes and Category 2 vehicles exceeding 16 tonnes. An optional annex proposes different metrics including years, kilometres whichever comes first, and energy throughput in monitoring. Capacity retention requirements for N₃ vehicles exceeding 16 tonnes are specified at 12 years and 700,000 km and at 15 years and 875,000 km.

The document presents Norway’s electrification progress for light duty vehicles (LDVs) and heavy duty vehicles (HDVs). Norway has 994,000 electric LDVs and 5,300 electric HDVs from a total fleet of 3.4 million LDVs and 73,000 HDVs. In April 2026, EV market share reached 98.6 percent with 107 municipalities achieving 100 percent market share. The document reports EVs represent 2-7 percent of registered vehicle fires, with fossil fuelled vehicles accounting for up to 90 percent. Research findings indicate battery degradation is driven by operating conditions, with cold climate introducing dual effects and battery management systems being key durability drivers.

The session is scheduled for May 19, 2026, from 05:30 to 08:00 EDT. The agenda includes discussion of UN GTR 22 and UN GTR 25 regulatory topics covering conditioning cycles, SOCE readiness monitor, MPRs, SOCR, mutual recognition, FCEVs, highly integrated systems, efficient test methods, OICA comments, MPRs and energy throughput, normal usage indices, Part C virtual distance verification, Annex 2 alternative test method, and battery replacement provisions. UN GTR 25 Amendment 2 must be submitted to March 2027 GRPE by December 2026 deadline.

UN GTR No. 21 Phase 4 will consider fuel-cell electric vehicles, measurement alternatives for highly integrated systems, modifications for more efficient test methods, and alignment with UN Regulation No. 177 based on inputs EVE-87-08e, EVE-87-09e, EVE-87-11e, EVE-88-12, EVE-85-06e, and EVE-74-10e. UN GTR No. 22 Phase 4 will explore conditioning cycles and readiness monitors for official testing, investigate minimum performance requirements for certified range, and consider establishing minimum performance requirement values for additional lifetime of ten years and 200,000 km, drawing on input EVE-96-06e. UN GTR No. 25 Phase 3 will amend Annex 2 provisions, verify reported virtual distance, reconsider minimum performance requirements regarding mileage and lifetime thresholds, and consider energy throughput as a threshold.

The 96th EVE IWG session was held online on April 21, 2026. Discussions covered Alliance des Mobilites’ battery state of health and state of certified energy monitoring findings; UN GTR No. 21 priorities including fuel cell electric vehicles and highly integrated systems; UN GTR No. 22 objectives on state of certified range and minimum performance requirements; and UN GTR No. 25 pilot phase testing and normal usage indices for heavy-duty vehicles. Action items included presentations on battery data, fuel cell vehicle proposals, test method efficiency, and electrified vehicle data from Norway.

The agenda includes presentations on UN GTR 21 covering highly integrated systems, FCEVs, and more efficient test methods; UN GTR 22 addressing MPRs, SOCR, readiness monitor and conditioning cycles, and mutual recognition; and UN GTR 25 with OICA comments and updates on MPRs/Energy throughput, Part C virtual distance verification, Annex 2, alternative test methods, normal usage indices, and battery replacement provisions.

The document outlines work priorities for UN GTR 21, 22, and 25 amendments. UN R21 Phase 4 will address fuel-cell electric vehicles, measurement alternatives for integrated systems, test method efficiency, and alignment with UN R177. UN R22 Phase 4 will explore conditioning cycles, readiness monitors, certified range performance requirements, and alignment with UN R154-04 and UN R83-09. UN R25 Phase 3 will consider Annex 2 amendments, virtual distance verification, minimum performance requirement thresholds by vehicle category, and alternative test methods.

This document is also available with tracked changes.

Document also available with tracked changes.

The Electric Vehicles and the Environment informal group reported on amendments to UN Global Technical Regulations 21, 22, and 25 governing electrified vehicle power, battery durability for light-duty vehicles, and battery durability for heavy-duty vehicles. Proposed changes include revised test methods, boundary conditions, definitions, and alignment with UN Regulation transposition efforts. Future work includes investigating fuel-cell vehicles, charging power curves, and alternative test methods.