The research aims to identify the interrelation between the sustainable development of a region based on transitioning to a green economy and the ethnocultural specificity of the region. It also seeks to determine the effectiveness of the state’s innovative policies in the regions of Russia, using the implementation of green projects in the Chuvash Republic during different historical periods as an example. Among the issues hindering the transition to a green economy, it is crucial to highlight the misunderstanding or disregard of the mentality of the “titular” people residing in the region. The shift to a green economy should occur without ecological risks for future generations. Equally important is preserving the ecological balance in the spiritual sector of society. The implementation of green projects should not disrupt the mental and moral well-being of citizens or contradict the ethnocultural traditions and worldviews of the people living in the area. The authors rely on the analysis of economic, socio-philosophical, and historico-cultural texts published in Russian over the last decade, addressing the issue of Russia’s transition to a green economy. They also draw on data from English- and German-language online platforms related to implementing green economy projects in Europe and other countries worldwide. The research employs content analysis of thematic publications in media and on the Internet, revealing the activities of the authorities of the Chuvash Republic in the field of green technologies. The advantage of the traditional worldview of the Chuvash people lies in its ecological nature. The activities of the Russian energy company “Hevel” (meaning “sun” in Chuvash), located in the city of Novocheboksarsk and engaged in the solar energy industry, align with the Chuvash ethical and spiritual priorities. In the Chuvash traditional understanding, the sun serves as a symbol of moral purity and nobility. Therefore, projects related to solar energy are favorably perceived by the local population. The research results can be considered in the decision-making process for administrative and managerial tasks related to the differentiation of modernization tasks and the implementation of innovative projects in the field of green economy in regions across the country.