The Colorado Water Workshop in Gunnison this year focused, in part, on the connection between energy and water. We use water to generate energy, as with various hydroelectric plants, and we use ...

The pump “pays” for the higher energy water at the output by letting water flow to a lower point. Of course, in this example the pump would be 100 percent efficient—and that never happens.

Q. We have the original oil-burning furnace in our 29-year-old home. It’s attached to a tankless hot water heater and supplies all of the hot water for the house, including domestic hot water ...