A great article from Jim Carlton in a recent Wall Street Journal that shows how far energy efficiency can go. Here’s the intro follow the link to read the entire article.

The green building movement is targeting a goal once thought virtually unattainable: zero net energy use.

While the trend is nascent, dozens of “net zero” and “near net zero” developments — projects designed to use only about as much power from the public grid as they can save or produce on their own — have sprung up across the U.S. over the past five years.

Read the rest at The Wall Street Journal