Am I missing something?
The Army has announced that it has changed the street lights at its Vicenza, Italy Garrison.
The story, posted on Army.mil, says the project led to replacing the street lights with lower-energy Light Emitting Diode street lamps at Caserma Carlo Ederle.
In all, 247 lamps were replaced at a cost of $843,000, the Army says.
According to the story, “The switch-over will save the Army money in two ways, said Engineering Division Chief Greg Vallery of the U.S. Army Garrison Vicenza Directorate of Public Works. ‘This will result in an 85 percent reduction in energy consumption, saving $20,000 a year,’ Vallery said. Additionally, LED lamps should last a minimum of 10 years, he said.”
‘Because the LED lamps last five times as long as the old lamps they are replacing, the savings from the purchase of replacement lights will be $6,500 a year,’ said Vallery. ‘To that we can add the cost of man hours no longer required to replace the old-style lamps, saving another $3,500 annually.'”
Let’s do the math.
The Army will save $20,000 a year in energy costs, plus $10,000 a year in replacement bulbs and man hours to install them.
That comes to $30,000 in savings per year.
So in 28 years, the Army will recoup its investment.
Oh, but wait, the bulbs only last 10 years, so every 10 years, the service will have to buy new bulbs and spend the money to replace them.
As a result, it will probably take more than 30 years to recoup the government’s investment.
At least the streets will be brighter.