We have just finished installing this 2-panel solar domestic hot water system.  This will save the homeowner up to 70% on their water heating bill, many days heating all their hot water requirements.  It will last 30+ years and pay for itself many times over in it's lifetime.  The best part is right now the Federal and Provincial governments and Nova Scotia Power Inc. have teamed up to provide more than 2/3 the installed cost back to the homeowner as incentives.  Now is a great time to explore this option for yourself.  Most systems will cost $6000-7000 installed and get up to $4900 back.  That's an installed cost of only around $2000 on most systems.