The article discusses the results of empirical research on the competitiveness of municipalities covered by the Natura 2000 network. Authors conducted a correlation analysis of the share of the Natura 2000 sites in the general area of a municipality and the indicators characterizing dimensions of competitiveness and development. Questionnaire surveys were conducted among local governments in Poland. On this basis conclusions on the socio-economic situation of municipalities with a large share of Natura 2000 areas and the impact of this form of conservation for local development were formulated. The article is also an attempt to answer the question whether Natura 2000 actually delivers sustainable development, or simply forces environmental protection without taking into account social and economic needs of local communities.