The Campbell-based company Coulomb Technologies has been helping drivers of electric vehicles find charging stations more efficiently with their new smartphone app.

Campbell-based Coulomb Technologies is helping electric vehicle drivers find charging stations more efficiently and spreading the use of electric vehicles worldwide.

The company launched a new smartphone app Friday that would assist drivers in finding charging stations and informing them what stations are vacant.

According to Coulomb Technologies officials, their infrastructure provides power to more than 20,000 charging sessions a month.

Drivers charge their vehicles for an average of eight hours a session, so knowing which stations are occupied is potentially extremely valuable to electric vehicle owners.

The ChargePoint Network, started by Coulomb in 2009, provides electric charging stations in 14 countries.