Innovative Small E-Fleet Pilot Program

The Innovative Small-E Fleet Pilot Program (ISEF) is part of the Clean Truck and Bus Voucher Incentive project, also known as HVIP. ISEF was established to support small fleets and owner-operators who may face barriers to zero-emission vehicle adoption such as high upfront costs and limited insurance options. ISEF eligible small fleets can receive vouchers for innovative solutions such as all-inclusive leases, peer-to-peer truck sharing, truck-as-a-service, and as well as other alternate business models.
More about this program

ISEF Implementation Manual

Current Implementation Manual guidelines are available on the California HVIP website and are effective for voucher requests submitted on or after September 22, 2025.

More Information

Reopening October 21, 2025

After being closed due to exhaustion of funds driven by high demand, ISEF is set to reopen on October 21, 2025.

California fleets can visit the ISEF Purchaser webpage to view offerings and apply to participate in ISEF. Guidelines to participate in ISEF are available through Appendix F of HVIP's Fiscal Year 24-25 Implementation Manual.

108 unique small fleets requested vouchers for FY 2024-25
67% of vouchers requested were for trucks domiciled in a disadvantaged community
Average fleet size for participants was 6 vehicles
$25M allocated for Fiscal Year 2020-21, an additional $10M was allocated from broader HVIP to meet the demand by small fleets
$33M allocated for Fiscal Year 2022-23, an additional $50M was allocated from broader HVIP to further fund ISEF vouchers for small fleet purchases
$14.3M allocated for Fiscal Year 2023-24
$14.97M allocated for Fiscal Year 2024-25