The island is connected to mainland Yarmouth by the
Ellis C. Snodgrass Memorial Bridge (colloquially known as the Cousins Island Bridge), built in 1955. It is also connected to
Chebeague Island by a 15-minute ferry ride on the Chebeague Transportation Company's ferry, the
Islander. The island's southwestern peninsula is the site of the
Wyman Power Station, an oil-fired electric power plant capable of producing up to 823 megawatts of electricity. Wyman is a
peaking power plant, which means it is fired up to operate only during times of high electricity demand in the region, such as hot summer days. The Wyman Energy Center also includes a
lithium-ion battery grid energy storage system which was the largest and the first of its kind in New England at the time of commissioning. The battery is designed to provide
ISO-New England an option for handling the continual changes in electricity supply and demand. Two years later, he sold approximately half of it to Richard Bray, who settled there with William Wise. Heritage Radio station
WYAR was established in 1998 by
Gary King in the basement of his Cousins Island home. King died in 2019, but the station is still on air today. ==Demographics==