What is the cost off one kw off electricity one long island ?
Each KWH will cost just about 8 to 15 cents on long island. This will largely depend on where you live or stay and your actual utility company's fees. One kilowatt-hour is equivalent to 1000 watts of electricity utilized for one hour. Check out http://tlc.howstuffworks.com/home/how-to-conserve-energy-at-home.htm for more information.