8.4 Million Metric Tons By Indy Staff Thu Aug 03, 2006 | 12:00pm Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Print (Opens in new window) Print Email a link to a friend (Opens in new window) Email Add on Google Add the SB Independent as your preferred source to see more of our stories on Google. Amount of carbon emissions we would avoid each year if only 10% of homes in the U.S. used solar water-heating systems.