An electrifying event "charges" back into Westport on Sunday.

The third annual Electric Car Rally, sponsored by the Westport Electric Car Club, hits the streets at 1 p.m. on a 40-mile course starting at the Saugatuck railroad station. The event is co-sponsored by Wilton Go Green, which that day will host its Go Green Festival in that town.

The rally is for plug-in vehicles, either plug-in hybrid or fully electric. It is not necessary to be a member of the club or to live in Westport to participate. There is a $50 entry fee per vehicle.

Driver check-ins begin at noon in front of the Steam Coffee Bar on the New Haven-bound side of the rail station.

Details of the rally course will remain secret until provided to the drivers when they check in, rally organizers said.

All drivers are required to have a navigator, but the club will help find a navigator for any driver who needs one. Interested drivers can find more detail on the website.

Organizers estimate it will take about two hours to drive the course, which will conclude at the Wilton Go Green Festival, where there will be a designated electric vehicle area. The Go Green Festival will take place at the Wilton Library and the town green.

The event is a rally, not a race, according to organizers. The competition is based on coming as close as possible to the official mileage as determined by the rally master without exceeding it. Prizes will be awarded to the winner and runner-up.

Numerous models of plug-in vehicles have participated in the two earlier rallies. These have include: the Tesla Model S, Tesla Roadster, Chevrolet Volt, Nissan Leaf, BMW ActiveE, BMW i3, Smart EV, Ford C-Max Energi, Toyota Prius Plug-in, Honda Fit and Fisker Karma.

"We welcome the partnership with Wilton Go Green and together we will make the rally and festival a great day," Leo Cirino, the club president, said in a release publicizing the event. "There is a continuing stream of new EV models coming to market as well as upgrades to existing models as battery technology continues to improve. Our club members love their EVs. This is a great way to show that EVs are practical, fun, and, in our view, essential to reducing carbon emissions and pollution."

The Westport Electric Car Club strives to promote "vehicle electrification and the supporting infrastructure in the service of reaching low or zero emission transportation," according to a news statement. The club welcomes new members interested in electric vehicles or those considering purchasing one.

For more information, visit www.westportelectriccarclub.com, or email westportEVClub@gmail.com.