Smart cities boost economic growth around the world by changing to the smart environment, smart economy, smart technologies, smart human capital, smart infrastructure, and smart governance to improve economic growth and better use of limited resources. We justify the development model of the "smart city" concept in Russia within a green economy approach and the managerial relations of innovative smart projects implemented within the public-private partnership (PPP). Our toolkit allows us to assess the effectiveness of management decisions in the implementation of the "smart city" concept and to carry out continuous public-private monitoring of the effectiveness of innovations in implementing smart PPP projects. To this end, we propose and justify a new indicator of the effectiveness of managerial decision-making, taking into account the quality of the information received during the implementation of innovative PPP projects, which allows calculating the degree of utilization of the potential capabilities of a company participating in a PPP.