Implementation Manual
The Implementation Manual is a comprehensive guide to HVIP policies, procedures, and requirements. It outlines the voucher process and eligible technologies and also answers common administrative and policy questions for all HVIP participants. The Implementation Manual may be periodically updated to clarify project requirements and improve project effectiveness.
Current Version
- FY24-25 Implementation Manual (Revised with Addendums #1 and #2) – effective August 14, 2025 to Present
- Addendum #1 to FY24-25 HVIP Implementation Manual – effective September 30, 2025
- FY24-25 Implementation Manual Appendix F – ISEF Set-Aside – effective September 22, 2025 to Present
- FY23-24 Implementation Manual Appendix G – Zero-Emission School Bus and Infrastructure (ZESBI) Project – released April 30, 2024
- FY24-25 Implementation Manual Appendix H – Public Transit Bus Set-Aside – effective September 8, 2025 to Present
- FY23-24 Implementation Manual Appendix I – Demo Provision – effective October 31, 2024
Previous Versions:
- FY24-25 Implementation Manual – effective August 14, 2025 to December 9, 2025
Previous Versions
Implementation Manuals:
- FY23–24 Implementation Manual (effective October 31, 2024–August 13, 2025)
- FY22–23 Implementation Manual (effective August 29, 2023–October 30, 2024)
- FY21–22 Implementation Manual (effective March 15, 2022–August 29, 2023)
Appendices:
- FY23–24 Implementation Manual Appendix F: ISEF Pilot Set-Aside (effective June 3, 2024–September 21, 2025)
- FY22–23 Implementation Manual Appendix F: ISEF Set-Aside (effective January 18, 2024–June 2, 2024)
- FY21–22 Implementation Manual Appendix F: ISEF Set-Aside (effective July 19, 2022–January 17, 2024)
- FY21–22 Implementation Manual Appendix F: ISEF Set-Aside (effective July 8, 2022–July 18, 2022)
- FY22–23 Implementation Manual Appendix G: Public School Bus Set-Aside
- FY21–22 Implementation Manual Appendix G: Public School Bus Set-Aside
- FY22–23 Implementation Manual Appendix H: Public Transit Bus Set-Aside (effective October 31, 2023–September 7, 2025)
Historical Documents
- FY21-22 Implementation Manual Appendix F – Innovative Small e-Fleet Set-Aside (published July 8, 2022)
- FY20-21 Implementation Manual (effective April 29, 2021–March 14, 2022)
- FY19-20 Implementation Manual (effective June 4, 2020–April 28, 2021)
- FY17-18 Implementation Manual (effective January 10, 2018–June 3, 2020)
- FY17-18 Implementation Manual (effective May 25, 2017–January 9, 2018)
- FY16-17 Implementation Manual (effective April 10, 2017–May 25, 2017)
- FY15-16 Implementation Manual (effective June 1, 2016–April 9, 2017)
- FY14-15 Implementation Manual (effective January 21, 2016–May 31, 2016)
Questions about specific requirements?
Contact [email protected].
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