Message from MDI SA: Please update your Flash Player Home | About company | Renewable energy sources | Construction | contact MDI SA is a private joint stock company operating on the basis of domestic capital. We are a specialized company carrying out projects as a general contractor or substitute investor. In addition to residential and commercial construction, our specialty is the construction of wind farms, biogas plants and photovoltaic installations . The Renewable Energy Sources (RES) industry is developing extremely dynamically, implementing the government's action plan and Poland's European commitments under the climate package. We work for the largest global and Polish energy companies investing in renewable energy. Construction of wind farms, biogas plants, photovoltaic installations as General Contractor or Substitute Investor. MDI SA All rights reserved. Copyright 2012.