This chapter examines the historic events surround ing the formation of a national Green Party which occurred after the wave of protest against nuclear power stations. These events provide an opportunity to assess the manner in which a social movement searches for new structures to ensure the continuity of its aims. In the Green and Alternative parties heterogeneous groups in the population that had campaigned at a local level sought to guarantee the continuity and success of the movement. The appear ance of homogeneity at a local level and the absence of more central organisations to further their pro test, influenced many activists to try and form a national Green Party. In addition, the formation of a party appealed to supporters of the SPD who were disappointed with the policies of the Social-Liberal Government and who sought to introduce a greater level of participation through party-political acti vity and not only through loosely-structured social movement organisations.