One of ISO New England’s responsibilities as Regional Transmission Organization is ensuring that the power system continues to operate reliably as conditions on the grid change. That includes evaluating the impact of modifications to the system, including the interconnection of new or upgraded resources. The ISO also reviews whether the costs associated with modifications or upgrades to the transmission system will be shared by the region. These tasks are performed pursuant to the Open Access Transmission Tariff (Section II of the ISO Tariff).
