I have updated some information on my web site that might be helpful to people;<br>Electricity - buying solar panels online and information on batteries and regulators. Updated 2012<br>http://www.vandwellers.org/solar/buyingsolar.htm<br><br>new article on sealing leaks<br>http://www.vandwellers.org/maintain-leaks.html<br><br>The buying solar panels guide has been updated to May 2012 prices and with new information on MPPT solar controllers.