Electric car charging network Better Place announced a milestone of development in Hawaii Tuesday, having installed more than 100 vehicle plug-in spots statewide offering users free power through the end of the year.

The company has a contract with the state Department of Business, Economic Development and Tourism to install 130 charge spots. Installation began last April, and Better Place said all 130 should be finished by the end of March.

“As more Hawaii drivers experience the benefits of electric cars, it is important to have the network that gives people convenient access to charge their cars,” Brian Goldstein, Better Place’s Hawaii director, said in a statement.

Two or more plug-ins, or charge spots, are typically at one location, so the 130 spots won’t be comparable to 130 gas stations. Better Place has 29 locations on Oahu with charge spots, seven each on Maui and Hawaii island, and two on Kauai.DBEDT has allocated $2.6 million in federal funds to put up more than 450 public charge spots across the state by this spring, primarily under contracts with Better Place and AeroVironment Inc.

AeroVironment is establishing 320 charge spots.

Better Place said its work alone gives Hawaii more public charge points per capita than any other state.

The company is trying to encourage more electric vehicle ownership by offering free power at its charge spots all year. Drivers must sign up for a free membership to access the charging network. Starting Jan. 1, electric vehicle drivers will have the option to pay to continue use of the network.

To view a map of the network, visit betterplace.com/hawaii.