SmA online solar designer software http://www.sunnydesignweb.com/sdweb/#/Home This online software does it all. Put in your panels, your location, your dreams and aspirations. Very cool. Morningstar has nice solar panel string calculator http://string-calculator.morningstarcorp.com/ Input your panel voltage/amp output Your charge controller values Nah, you don’t have to pick their equipment. you can put in your own or…