Zero-Emission Powertrain Certification Check List
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In order to apply for Zero-Emission Certification (ZEPCert), the manufacturer should follow CARB's family naming conventions guideline and the Mail-out provided for Zero-Emission Powertrain (ZEP) naming that can be found in the link below. Manufacturers of new heavy-duty vehicles, which are subject to the greenhouse gas regulations, intending to pursue the Enhanced Certification pathway rather than the traditional GHG certification pathway, are required to submit an Executive Order for the ZEP families deployed by their vehicle families. For more information on vehicle certification, please refer to "HD GHG Certification Check List".
| Item # | Checklist Items1 |
| 1 | Letter of Intent/Cover Letter: A letter addressed to the chief of the ECC Division. This letter must declare a ZEP family name according toZero-Emission Powertrain Family Naming Convention. CARB will issue an Executive Order as necessary. |
| 2 | Zero-Emission Powertrain Family Naming Convention: In order to apply for a ZEPCert Executive Order, manufacturers should follow the family naming conventions provided in "this Mail-Out". |
| 3 | Zero-Emission Powertrain Application Template: The CARB document "ZEP Certification Template", (updated October 2023) with information in the ‘General Family Info’ tab. |
| 4 | Required Documents/Reports |
| 4.a | Signed Statement of Compliance |
| 4.b | Technical Description Powertrain Configuration List. For each powertrain model, provide the following: |
| 4.b.1 | Powertrain Model Number/Name(s) 2 |
| 4.b.2 | System Monitoring and Diagnostics Information |
| 4.b.3 | Intended weight class(es) 2 |
| 4.b.4 | Typical powertrain applications (e.g., vocational vehicle, tractor, bus) 2 |
| 4.b.5 | Specifications for the gear box(es), transmission(s), and transaxle(s), as appropriate |
| 4.b.6 | Information on the type, number, mounting location, along with the peak and continuous power ratings, in units of kilowatts, of the electric motor(s) that will provide tractive effort |
| 4.b.7 | Description of inverter(s) including technical specifications, make, and model (as applicable); |
| 4.b.8 | Fuel tank volume, maximum mass capacity of fuel, and pressure capacity (for fuel-cell powertrains) 2 |
| 4.b.9 | Description of motor controller(s), including technical specifications, make, and model (as applicable) |
| 4.c | Additional Powertrain Info (for battery-electric powertrains) |
| 4.c.1 | Powertrain test group configurations and the manufacturer-designated model codes associated with each configuration |
| 4.c.2 | Battery model names and technical specifications, and battery chemistry |
| 4.d | Certification Test Data (for battery-electric powertrain) |
| 4.d.1 | Alternative Test Procedure (if applicable). Note that alternative test procedures require pre-approval by CARB |
| 4.d.2 | Usable Energy Capacity 23 |
| 4.d.3 | Rated Energy Capacity 23 |
| 4.d.4 | Test Parameters (example: SAE J1798, Appendix A) |
| 4.d.5 | Attestation statement regarding test conditions of SAE J1798 |
| 4.e | Label (including samples) 4 |
| 4.f | Battery End-of-life Plan |
| 4.g | Diagnostic and Repair Manual (a draft may be provided so long as a final copy is provided before the first sale of a vehicle equipped with such powertrain.) |
| 5 | Projected Sales (United States and CA) |
| 6 | Owner’s Manual with maintenance instructions (a draft copy may be provided so long as a final copy is provided before the first sale of a vehicle equipped with such powertrain) |
| 7 | Delegated Assembly Plan/installation manual (if applicable) |
| 8 | Warranty Statement Including Part List |
| 9 | Proof of Certification Fee Payment and Final Invoice |
| 10 | Diagnostic Communications Tools Compatibility Questionnaire |
| 11 | Other Items Like Diagnostic Software Upon Request |
- 1CALIFORNIA STANDARDS AND TEST PROCEDURES FOR NEW 2021 AND SUBSEQUENT MODEL HEAVY-DUTY ZERO-EMISSION POWERTRAINS, Adopted June 27, 2019
- 2abcdef Listed within ZEP Application
- 3ab Submit in kwh and Ah to 3 decimal places
- 4CARB will request physical samples of labels in the first year of certification and anytime changes to the label material, manufacturer or manufacturing process are made.