"Recently, it has developed a new roof shingle that doubles as a solar panel, the Powerhouse Solar Shingle. The company predicts it will bring in as much as $10 billion in revenue by 2020. The news was announced in The Noble City Times on November 21, 2009. Greendustry cooperates with Walkernet on the development of green energy solutions."@en . "Recently, it has developed a new roof shingle that doubles as a solar panel, the Powerhouse Solar Shingle. The company predicts it will bring in as much as $10 billion in revenue by 2020. The news was announced in The Noble City Times on November 21, 2009. Greendustry cooperates with Walkernet on the development of green energy solutions."@en . . . "Greendustry"@en .