watter

— The original cost of the 100-watter is approximately 15 cents, while the 2 60-watters will cost about 26 cents, and the 6 25-watters will cost about 60 cents. That’s one saving. To operate the 100-watter for 1,000 hours in a community where electricity costs 4 cents a kilowatt hour would cost $4.00. The cost of operating the 2 60-watters would be $5.00, while the cost of operating the 6 25-watters would be $6.00.