I got a charge out of this

Charging iPads.

The annual cost of charging your iPad tablet -- based on fully charging it every other day -- is $1.36, according to a study by the Electric Power Research Institute,

"The analysis shows that each model of the iPad consumes less than 12 kWh of electricity over the course of a year, based on a full charge every other day," EPRI said. "By comparison, a plasma 42" television consumes 358 kWh of electricity a year.

Apple said 67 million of the devices have been purchased worldwide, the power institute said. EPRI calculations found that the average energy used by all iPads in the market is approximately 590 gigawatt hours.

"In a scenario where the number of iPads tripled over the next two years, the energy required would be nearly equivalent to two 250-megawatt (MW) power plants operating at a 50 percent utilization rate. A quadrupling of sales in two years would require energy generated by three 250-MW power plants," the power institute said.

"These results raise important questions about how the shifting reliance from desktop to laptop to mobile devices will change energy use and electricity requirements for the information age," EPRI Vice President Mark McGranaghan said. "At less than a penny per charge these findings bring new meaning to the adage, 'A penny for your thoughts.' "

I'm guessing that some intern in the public relations office came up with that and is real proud of himself.