The Renewable Energy Policy Network for the 21st Century (REN21) is the follow-up network of the renewables 2004 conference. Providing a forum forinternational leadership on renewable energy, REN21 connects the wide variety of dedicated stakeholders that came together at the Bonn conference. Its goal is to allow the rapid expansion of renewable energies in developing and industrial countries by bolstering policy development and decision-making on international, national, and sub-national levels. REN21 helps create an environment in which ideas and information are shared and cooperation and action are encouraged to promote renewable energy worldwide.