Electronic vehicle charging stations are popping up throughout the Washington region. The latest spot offering drivers such a jolt: Dulles International Airport.

Four electric charging stations opened on Wednesday at Dulles. Two vehicles can park at each station, giving drivers eight available spaces.

The stations are part of a pilot program, so there is no extra cost to use them through 2013. Regular parking fees still apply for using the garage.

Another four stations are being installed at Reagan National Airport, according to the Metropolitan Washington Airports Authority, which operates Dulles and National. They are expected to be in service soon.

Eight charging stations were added to Baltimore-Washington International Marshall Airport last year.

“We recognize our airports’ importance to the region as a transportation hub,” Jack Potter , president and CEO of MWAA, said in a statement. “We are pleased to offer this service enhancement to our customers and to promote environmental stewardship.”

Each station at Dulles has two types of chargers: Level 1, a 120-volt outlet, and Level 2, a 240-volt connector. You can see if a station is available or activate a station with the ChargePoint app (available for iPhone, Android and Blackberry).

The stations, which are reserved for electric vehicles, are in Daily Parking Garage No. 2 on Level 3. You can see them on a map here.