US - Hitachi Energy has been selected by Hydro-Quebec to help deliver electricity from Quebec to New York

The Chateauguay HVDC (high-voltage direct current) system could enable the transmission of up to 1500 MW of electricity between the electrical networks of Quebec and the State of New York.

Hitachi has announced they are supplying a "back-to-back" converter station, which converts AC power to DC then converts it again to AC from DC, enabling the interconnection of the 735-kV Canadian and 765-kV New York grids, "which are out of phase and cannot be connected directly via traditional AC systems".

The new system should replace existing equipment, which has been in operation since 1984, thereby increasing efficiency and controllability, and raising the power conversion capacity of the Chateauguay HVDC system by 50%.

Source: Electrical Business