Alstom T & D India has successfully commissioned one bay of a 220 kv substation with its patented Optical Instrument Transformer, the next step towards India's first digital substation. The substation, which is located at Jambuva in the Vadodara district of Gujarat, was contracted by the state transmission utility - Gujarat Electric Transmission Corporation. The contract was awarded to Alstom T&D India in August 2011 as a pilot project to deliver Alstom's compact optical sensor intelligence range of instrument transformers.