Introduction  In order to achieve the strategic goal of "carbon peaking and carbon neutrality", it is imperative for the transportation industry to transition towards greening and low-carbon development. The integration of transportation and energy is one of the important technological paths to achieve the strategic goal in the transportation sector, and the investment decision-making model and business model enhance the momentum of the development of the transportation and energy integration.

  Method  Therefore, this paper analyzed the composition of investment estimation and decision-making points, proposed economic evaluation indexes and environmental benefit indexes, constructed an investment decision-making model, and explored the business model of transportation and energy integration in terms of the development path, framework, and the conception of typical scenes.

  Result  By analyzing the investment feasibility of typical projects of transportation and energy integration, the validity of the transportation and energy integration investment model presented in this paper is verified. Based on the classification of regions according to China's solar resource conditions, the promotion of China's transportation and energy integration model is divided into three types: single-industry integration promotion region, multi-industry integration promotion region, and industry cluster integration promotion region. The development of the business model of transportation and energy integration is divided into three stages of cultivation, upgrading and innovation, and the market positioning, investment and financing subjects and methods, operation methods and profit mechanism of different stages are analyzed, so as to summarize and form the typical scenarios of the business model at different stages, and to realize the continuous upgrading of the business model.

  Conclusion  The investment decision-making model for transportation and energy integration proposed in this paper helps to improve the efficiency and effectiveness of investors' decision-making, and the business model helps to promote the market-oriented development of transportation and energy integration.