SAN FRANCISCO  The State of Hawaii and the Hawaiian Electric Company on Tuesday endorsed an effort to build an alternative transportation system based on electric vehicles with swappable batteries and an “intelligent” battery recharging network.

The plan, the brainchild of the former Silicon Valley software executive Shai Agassi, is an effort to overcome the major hurdles to electric cars  slow battery recharging and limited availability.

By using existing electric car technologies, coupled with an Internet-connected web of tens of thousands of recharging stations, he thinks his company, Better Place L.L.C. of Palo Alto, Calif., will make all-electric vehicles feasible.

Mr. Agassi has succeeded in assembling a growing consortium of national governments, regional planning organizations and one major car company. Tuesday’s announcement follows earlier endorsements from Israel, Denmark, Australia, Renault-Nissan and a coalition of Northern California localities supporting the idea leading to the deployment of an electric vehicle with a range of greater than 100 miles, beginning at the end of 2010 in Israel. The company plans test deployments of vehicles in 2009 and broad commercial sales in 2012.