Perfect storms make good business for Generac Power Systems. That's because the company manufactures engine-driven standby and portable generators for homes, businesses, hospitals, and recreational vehicles. The company also makes industrial power generation equipment, automatic transfer switches, switch gear and controls, and remote monitoring software. Generac sells its products through retailers, such as Home Depot, and wholesale distributors. The US and Canada represent over 99% of company sales. Established in 1959, Generac was purchased by private equity firm CCMP Capital in 2006. In October 2009 Generac filed plans for an initial public offering (IPO).