For some companies, bad news is good news, and power generator manufacturer Generac Holdings (NYSE: GNRC) unquestionably sees a positive impact when weather disasters bring power outages that showcase the value of its electricity-generating products. In recent years, weather conditions had been fairly benign, hurting Generac. But 2016 brought some major events that brought Generac back to more normal conditions, and coming into Tuesday’s fourth-quarter financial report, Generac investors looked to see sizable gains in revenue and higher profit.