Maybe not the first but a good start from Airbus/EADS: Electric Aircraft Are On The Way, Stylish E-FAN Makes First Flight - Yahoo Autos
Wish it was by a nimble and well funded startup rather than Airbus. I have a bad feeling they will sit on this technology like GM did with the EV1.
Actually, Airbus wasn't the first despite some possible shenanigans to prevent another electric plane company from getting it first. Airbus called out ahead of E-Fan flight across English Channel Airbus beat in bid for first electric English Channel crossing