Science and technology in the United States finish. For example, the British engineer Joseph Swan built an incandescent electric lamp in 1860, almost 20 years before Edison. But Edison's light bulbs lasted much longer than Swan's, and they could be turned on and off individually, while Swan's bulbs could be used only in a system where several lights were turned on or off at the same time. Edison followed up his improvement of the light bulb with the development of electrical generating systems. Within 30 years, his inventions had introduced electric lighting into millions of homes. Another landmark application of scientific ideas to practical uses was the
Edison Sault Electric Company its former sister company, Wisconsin Electric (Arnold-Indian Lake #1 and Arnold-Indian Lake #2). Edison Sault had interconnections with Cloverland Electric and Upper Peninsula Power on its 69 kV subtransmission system. Edison Sault Electric Company Edison Sault Electric Company was a public utility that provided electricity to the eastern portion of Michigan's Upper Peninsula. Its service area covered four counties (Chippewa, Mackinac, Schoolcraft and Delta). The company was founded in 1892 in Sault Ste. Marie. Wisconsin Energy Corporation acquired the Edison Sault Electric Company with its purchase of its parent company, ESELCO in 1998. In 2009, Wisconsin Energy announced it had