# Exploring and Modeling the Incentive Strategies of New Energy Ship Application in Yangtze River
## 5 Conclusions  
To advance the proliferation of NESs in Yangtze River shipping, a model for incentives is proposed based on the evolutionary game theory for government and Yangtze River shipping enterprise decision making regarding NES application. This paper assesses the stabilization strategies for the evolutionary game between government and shipping enterprises under a variety of conditions and simulates the effects of four parameters: cost, utility loss, government rewards, and tax incentives on the system's evolutionary paths. This study also integrates empirical evidence of Yangtze River LNG ships. The conclusions are as follows:  
There are three stable equilibrium points in the evolution game between shipping enterprises and the government: (1, 1), (1, 0), and (0, 1) when the associated net gain of a given strategy is greater than 0. Among the four equilibrium points of the game between enterprises and the government, there are three conditional stability points, (0, 1), (1, 1), and (1, 0), and when the relative net benefit of focusing on a certain strategy is positive, the relevant subjects will be more inclined to choose that strategy, i.e., there is no situation of {TFSs, non-incentive} strategy selection;  
The numerical analysis answers questions (i) and (ii) posed at the beginning of the paper: the stronger the government incentives, the higher the motivation of shipping enterprises to apply NES and the faster the strategy can reach stabilization. However, without government incentives, with the continuous promotion of the technology, shipping enterprises will eventually apply NES, but the time for the strategy to reach stabilization is much slower than with the measures. The reduction in the application cost and utility loss of NESs greatly improves the enthusiasm of shipping enterprises and encourages the shipping enterprises to apply NESs without government intervention; government subsidies and tax incentives can not significantly enhance the enthusiasm of NESs of shipping enterprises, but bring financial pressure to the government. Therefore, the government needs to grasp the scale to promote the application of NESs, comprehensively consider the status quo of the application of NESs and the financial situation of shipping enterprises, and introduce the appropriate government reward amount and tax incentives. In order to advance the implementation of NESs, we can start by accelerating the research and development together with the integration of NES technology, refining the configuration of energy refueling facilities, and implementing reasonable scientific policies designed by the government to increase shipping enterprises' interest in using NESs. Future research areas to explore further are highlighted to address the inadequacies of this paper. Firstly, this paper solely explores the influence of government rewards and tax incentives on NES application and does not consider the effects of diverse incentives (such as energy subsidies, carbon tax, etc.) on shipping enterprises, which is also a critical area of future research. However, owing to the intricate composition of Yangtze River vessels, the investigation exclusively selected the most typical vessel categories in the current Yangtze River fleet for practical trials. Further research could expand the range of ship types in order to better assess the influence of government subsidies on the implementation of new energy in various ships. This would facilitate a thorough examination of the link between government subsidies and the application of new energy and guide policy implementation. Secondly, in the future, when relevant big data are accumulated to a certain extent, methods such as decision trees and artificial neural network methods can be explored to improve the efficiency of the application state of new energy ship technology [43; 44; 45]. Thirdly, expanding the discussion to include how big data can be integrated with our research on incentive strategies for new energy ships can highlight potential areas for future research [46].