Sustainable strategies modeling for government financial system, the state banking system, and the investment system of renewable power generation

The interaction of the government financial system, the state banking system, and the investment system of renewable photo-voltaic (PV) power generation equipment can lead to sustainable strategies of these three parties (including government subsi-dies and bank loans) in the distributed state PV-market depending on its level of development. However, the instability of power output, caused by the variability and changing nature of renewable energy sources, poses challenges for large-scale power dispatch. In addition, the development of the PV-industry has been constrained by a long period of return on investment in solar photovoltaics and the need for large initial investments. With the rapid development of the sharing economy, the provision of financial support and the sharing of investment risks among investors in the PV-energy have become key means of promoting the PV-industry. State incentive policy was considered an effective approach to significant promotion of PV-systems. Government subsidies reduce the need for large initial investments, and market mechanisms, such as feed-in tariffs and tax rebates, increase return on investment and reduce payback periods. In addition, bank loans are considered another major source of external financing for the development of the PV-industry. Third-party financing with appropriate risk-sharing is considered an effective approach to promote the use of photovoltaic technologies. As government subsidies put pressure on the state budget and bank loans require banks to take significant credit risks, there are clear barriers to governments and banks supporting the develop-ment of the PV-industry. By 2022, the issues of computing such targeted government subsidies and bank loans with limited credit risks, which maximize incentives for the diffusion of PV-technologies, remain underdeveloped. The current important issues for suggested numerical studying and modeling are: can government subsidies and bank loans significantly contribute to the diffusion of PV-installations at various levels of the PV-market development; what evolutionarily stable states will be formed at different levels of the PV-market development; how the volume of government subsidies, the share of bank loans, the capacity of PV-installations by investors will affect the evolutionary trajectories of the all PV-market parameters and the transformation of various evolutionarily stable states. To do this, numerical modeling is performed to study the dynamic evolutionary trajectories at different levels of the PV-market development.