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 Electric Institute Edison Electric Institute signed a memorandum of understanding (MOU) regarding plug-in electric vehicles (PEVs). The MOU sets up a collaboration between the government and EEI to make PEVs, by the year 2022, as affordable as regular gas-powered vehicles were in 2012. The Department of Energy runs an initiative called the "EV Everywhere Grand Challenge", which put forth the 2022 affordability goal. The program coincides with the popularity of electric vehicle sales, which have increased by 128 percent between 2012 and 2014. EEI runs a program called the Employee PEV Engagement Initiative. The goal is to "increase electric vehicle readiness, especially