Walden School is going green, according to an article in today's Journal Times. Students are getting involved, raising money for solar panels that will cost $232,000 and bring in annual revenue of $4,000. The "profits" will be used to "fund other projects, like improving the old windows..."
I hope the teachers at Walden will not let their zeal for environmentalism distract them from teaching core subjects like math. This project presents a unique learning opportunity for Walden students.
$4,000 divided by $232,000 = .0172413, or 1.7%.
$232,000 divided by $4,000 = 58.
The Walden project will earn an annual on return on investment of 1.7% and it would take 58 years to pay off the project and begin to profit from it.
Now suppose the Walden administration and students really wanted to replace those drafty, inefficient windows. Suppose they considered alternative uses for the $232,000. Lets say they found a bank willing to offer a 3.45% (double the return on the solar panels) annual return on the $232,000. They would have an annual return of $8,000 instead of $4,000. Using this conservative example, the cost of the mindless idealism being taught at Walden would be $4,000 per year.
But it is worse than that actually. Instead of placing solar panels on their roof, they could instead replace the windows. I suspect that they could save over $4,000 annually on reduced heating and cooling costs. And Walden is likely heated and cooled by using electricity, which is produced by burning coal, which we all know pollutes the air and causes global warming.
I wish the students at Walden would stop destroying our earth.