John W. Galbreath was a real estate developer, philanthropist, owner of the Pittsburgh Pirates when they won three World Series titles, the owner of two Kentucky Derby winners and a big booster of Ohio State University sports. Now his seven grandchildren are looking to build on his legacy as a conservationist and environmentalist. The family has struck a deal to lease 900 acres of Darby Dan Farm to Chicago-based renewable company Invenergy as part of Pleasant Prairie Solar Energy project, a 2,400-acre solar farm proposed for Pleasant and Prairie townships. The application is pending before the Ohio Power Siting Board, a state agency that must sign off on requests for the construction of major utility facilities in Ohio. If approved, construction of the 250-megawatt project, enough to power 50,000 homes, could start next year.