In the face of multiple crises in the economic, ecological and social sector an interest throughout the world is growing to find alternative ways of how living and economy can be managed. One way is defined as the solidarity economy, which involves manifold economic activities prioritizing the human being and its needs instead of profit-making. Wide practical experiences have already been achieved and theoretical discussions are increasing. However, initiatives and projects of the solidarity economy have hardly gained ground in Austria. This led to the question of which kinds of measures are necessary to successfully establish the solidarity economy in this country. For this purpose, the thesis provides, firstly, a characterization of the alternative model. Since a consistent theoretical and conceptual framework has not been constituted yet, the historical development is addressed and an initial definition of solidarity economy is given. Against this background the principles of the alternative economic model are elaborated. Furthermore, obstacles of the enterprises of the solidarity economy are identified. One difficulty is that the alternative companies are embedded into a profit-oriented economic system and their efforts to realize their principles are undermined by entrenched economic structures and ways of thinking. Moreover, intra-enterprise difficulties are playing an important role in this context. Finally, recommendations for possible courses of action are submitted, which are deduced on the basis of the identified challenges. Case studies from countries, in which solidarity companies were established more successfully than in Austria, contribute to the elaboration of proposals. These recommendations illustrate possibilities for solidarity enterprises to tackle their challenges.