[1][2] In 2015, the project lost access to the Eastern Interconnection (72% of its total peak demand) when Southwestern Public Service dropped out.

[3] Tres Amigas officials reiterated their plans to connect the eastern and western grids in 2017 even as leases for property intended to construct the project were relinquished that February according to New Mexico's State Land Office.

[4] The Tres Amigas SuperStation project proposes to tie the East Coast, West Coast and Texas grids together via three 5 GW superconductive high-voltage direct current power transmission lines,[2] which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of each side.

The Tres Amigas SuperStation plans to act as a power market hub, enabling the buying and selling of electricity among three of North America's largest interconnections[6] above the amount available today.

The project will provide solar, wind and other renewable developers with the transmission infrastructure needed to transport clean electricity to population centers.

[3] Yet Tres Amigas officials reiterated their plans to connect the eastern and western grids in 2016 and 2017, and announced costs were falling due to new technology.

[1] In 2011, Tres Amigas SuperStation (TAS) awarded Alstom Grid a €150m (£132.4m) contract for a 750MW, 345kV DC converter scheme [11] for a VSC connecting PNM and Xcel Energy in 2014.