Identification of the prospects for the social entrepreneurship expansion as one of the aspects of green economy uses the example of St. Petersburg. We use a statistical method for processing nominal data with the aid of SPSS. The study revealed that social-oriented not-for-profit organizations and government social agencies work with the same social groups and offer similar services. Therefore, to increase the competitiveness of not-for-profit organizations, these organizations should provide services at a high client-oriented level. We found that because of the lack of permanent sources of funding, the problem of fundraising exists. The results of the current study are applicable for improvement of commercial and social practices of social-oriented not-for-profit organizations, in the expansion of services for the additional professional education of such organizations’ personnel, in the development of practices in fundraising and crowdsourcing, in improving applications for grant support from the state, in the diversification of services. We revealed that social-oriented not-for-profit organizations and state social agencies work with the same social groups and offer similar services; we found that the problem of fundraising becomes a priority for this organizations; personnel in these organizations has different education; the representatives of not- for-profit organizations understand the purposes of social entrepreneurship.