Roger--
Although an issue, its not the 40 cents a month or $40 for that matter that is my first concern. My first concern is how long will heat remain inside the tub casing in case of power failure during a New england winter. As you can well imagine, line/pump freeze ups can be disasterous. Will the ambient temperature stay above 32 degrees for an hour? Three? Six? (obviously keeping the cover on tight.)
Now...the topic doesn't seem so dumb....to me anyway.
Cros'