The board of PJM Interconnection, a US based power marketer, has authorized an additional $1.8bn in transmission line upgrades and improvements in northern New Jersey.

The upgrades were identified through PJM’s Regional Transmission Expansion Plan, which forecasted reliability needs through 2025.

The transmission plan changes include $1.1bn in transmission line upgrades and additions, and $0.7bn for interconnection of generation and merchant transmission.

The board also approved a change in the approach to resolving reliability issues in northeastern New Jersey.

It approved removing from the regional plan a proposed 500kV line connecting the Branchburg, Roseland and Hudson substations in northern New Jersey.

Instead, existing lines will be upgraded and two new underground 230kV cables will be installed to address projected overloads.

The board has authorized $17.8bn in transmission system upgrades and improvements since the first Regional Transmission Expansion Plan was approved in 2000.