AREVA's activities are organized into five Business Groups. Mines groups the uranium mines exploration and operation activities. The Front End converts and enriches the uranium and designs the fuel for the nuclear reactors. Reactors and Services groups the activities of design and construction of nuclear reactors and propulsion and research reactors, and the activities of maintenance of the nuclear power plants. The Back End recycles the used fuel and provides transport, clean-up and dismantling services. Renewable Energy develops wind energy, bioenergy, solar power and hydrogen power solutions.