Niagara Mohawk, a National Grid USA company, provides electric service to approximately 1.5 million customers and natural gas to approximately 540,000 customers in upstate New York. The company is based in Syracuse. Its parent company also has electricity distribution operations in New England. National Grid USA’s core business is the transmission and distribution of electricity. The company also has subsidiaries engaged in natural gas distribution; constructing and leasing of telecommunications infrastructure; and energy-related consulting. National Grid USA is a subsidiary of National Grid Transco, an international, U.K.-based energy delivery business with principal activities in the regulated electric and gas industries.