| All countries have to actively explore new sources of energy when forced the global energy crisis.In order to solve conventional energy shortage,China has vigorously developed new energy industry and developed safe,clean and efficient modern energy technology to promote the revolution of energy production and consumption.The scientific and technological progress and comprehensive innovation are required to optimize the energy structure,the ability of efficient technological innovation will effectively improve the utilization of new energy and alleviate the current situation of energy shortage.As a specific unit established to develop new energy industry,new energy listed companies have an irreplaceable important position in the development of new energy industry,and their scientific and technological innovation is an important guarantee to ensure the rapid development of new energy industry in China.Therefore,in order to reveal the development status of technological innovation of new energy listed companies in China,with the help of technology innovation theory and technology space diffusion theory,taking 68 new energy listed companies in Shanghai and Shenzhen stock as research objects,this paper comprehensively uses the four-stage DEA model and Tobit model to measure and analyze the spatial-temporal difference of technological innovation efficiency and the difference of new energy category of new energy listed companies in China between2014 and 2018,to explore the influencing factors that affect the efficiency of technological innovation in new energy listed companies,and further use the space panel model to measure the spatial diffusion effect of technological innovation in companies to analyze the influence of technological innovation diffusion on the technological innovation development of companies,and seek the management method to promote the technological innovation development of new energy listed companies.The main contents and conclusions of this paper include the following:(1)When analyzing the spatial and temporal difference of technological innovation efficiency of new energy listed companies,the results show that the efficiency of technological innovation in most companies is lower than the average of technological innovation efficiency over the years,the utilization ratio of resources is relatively low,and some resources are over-invested.Moreover,the fluctuation of technological innovation efficiency of new energy listed companies over the years is relatively small,and the company’s technological innovation ability has not improved significantly in the good direction on the whole.(2)The efficiency of technological innovation varies according to different types of new energy,and the average efficiency of technological innovation of biomass energy companies is the highest.The technological innovation efficiency and institutional efficiency of the four new energy types of companies,solar,wind,biomass and other types of new energy have both increased numerically under the influence of exogenous environmental factors.Among them,the average value of technological innovation efficiency of other new energy types companies has the largest increase difference.(3)In analysing the influencing factors on the efficiency of technological innovation,it is found that only two corporate attribute factors and two external environmental factors have a significant impact on the efficiency of technological innovation in new energy listed companies.The corporate attribute factors are administrative expenses and enterprise registration to the reporting period,the external environmental factors are the number of enterprises and the concentration of industry.To a certain extent,administrative expenses hinder or limit the capital investment of the company in R&D innovation,the enterprise registration to the reporting period,the number of enterprises in the industry and the concentration of industry to a certain extent is conducive to the production capital investment and R&D capital investment in company`s R&D innovation.(4)In analyzing the spatial diffusion effect of technological innovation,it is found that the spatial diffusion effect of technological innovation between new energy listed companies is positive,which is conducive to the improvement of technological innovation ability of each company.Secondly,the increase of technological innovation efficiency of each company is not totally dependent on R&D human capital,but it is highly dependent on R&D capital,and the more investment of R&D funds,the faster the R&D ability and technological innovation ability of the company are enhanced.To sum up,in order to improve the efficiency of technological innovation and promote the development of technological innovation in new energy listed companies,it is necessary to increase the industrial concentration in the new energy industry,consider the particularity and difference of different types of new energy in many aspects,such as energy availability,energy development efficiency and energy conversion efficiency,and pay attention to the influence of exogenous environmental factors on the technological innovation and development of new energy industry in varying degrees;At the level of company group,it is necessary to encourage the establishment and growth of the company,strengthen the communication,cooperation and sharing of technological innovation among the new energy listed companies,increase the spatial diffusion effect of technological innovation,and promote the development of technological innovation in the group of new energy listed companies.At the individual level of the company,it is essential to increase the investment in R&D funds,reasonably invest in management expenses and R&D human capital,optimize the input-output ratio of technological innovation,and promote the development of technological innovation in the company. |
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