AUSTIN, Texas — Transportation experts agree that there is no single answer for which alternative power source is best to carry the trucking industry to a zero-emission future.

President Joe Biden announced Oct. 13 that seven state-backed regional hubs will receive a total of $7 billion for hydrogen fuel production in his ambitious push for zero-emission green energy.

Truck maker Nikola agreed to sell its Phoenix Hydrogen Hub project to partner Fortescue Future Industries for $24 million, the companies said.

Truck makers and suppliers are taking steps toward developing hydrogen combustion engines on the path to a zero-emission future.

Florida and South Korean officials signed a pact to create a hydrogen research hub, set to break ground next month in Polk County.

Several state consortiums met the April 7 deadline to be among the nation’s first hydrogen hubs as the U.S. Department of Energy begins to evaluate applications for funding.

The Los Angeles and Long Beach ports want to be part of a statewide clean hydrogen hub, through which they would get funding to test usage of the fuel to power trucking and terminal equipment.

The Department of Energy advised proposed consortiums backed by states and others competing for a share of $7 billion in federal funds for their regional hydrogen hubs to get their permits, cost projections and community outreach plans in order.

Nikola Corp. is launching updated branding for its hydrogen production, distribution and sales efforts, sharpening its focus on a segment integral to a company footprint that also includes production of fuel cell electric trucks and development of electric vehicle technology.

Texas Gov. Greg Abbott declared that a newly announced $4 billion green hydrogen production facility for mobility and other industrial markets will help the state retain its national leadership role in energy.