PowerFlex, a flexible sheet of thin-film photovoltaic cells by Global Solar, adheres to membrane and metal-roof systems and can conform to many roof geometries. Capable of generating between 250W and 300W, the large-format module comes in 0.5m-by-5.7m rolls that can be laid out with minimal spacing. Weighing 0.7 lbs per square foot, the building-integrated photovoltaic system does not require additional structural reinforcement or mounting hardware for installation. PowerFlex’s flat profile results in little or no wind uplift and can generate electricity in many light conditions. globalsolar.com