The test run of the first electric bus was cooperated by Loxley Plc which supplied the vehicle for test.
The test run was launched in a ceremony presided over by deputy transport minister Omsin Chiwaphruek.
The route on the test run is from Morchit bus terminal to Don Muang airport, and will last May 25.
The fare for the route is 30 baht.
The new bus meets the public service vehicle accessibility regulation that enables disabled passengers to access to the service.
Mr Omsin said the BMTA will put in service 20 more electric buses in May.