Charles Martin Madson decided to devote himself to clean renewable energy specializing in wind power. Under AAltafil Inc. of the Philippines and AAltamerica Inc of Tucson, Arizona, Charles has developed the first and only integrated system for the collection and storage of wind power on a large scale. From 2015 to 2019, he has also been granted 2 U.S. and 2 Philippine patents, with a 3rd U.S. patent and a 3rd Philippine patent pending. Some of his wind turbine designs reflect the influence aeronautic design.