PurposeWith the rise of service economy, many companies are attempting to gain a competitive advantage through service innovation. However, the existing research has not drawn consistent conclusions about the relationship between service innovation and firm performance. Hence, the purpose of this paper is to provide a quantitative review on the service innovation-performance relationship based on research findings reported in the extant literature.Design/methodology/approachStudies from 46 peer-reviewed articles were sampled and analyzed. A meta-analytic approach was adopted to conduct a quantitative review on the relationship between service innovation and firm performance, and the effects of any potential moderators were further explored.FindingsThe results found that service innovation has a significant positive impact on firm performance. Additionally, the relationship between service innovation and firm performance is influenced by measurement moderators (economic region and performance measurement), and contextual moderators (firm type, innovation type, customer factors and attitudes toward risk).Originality/valueThe meta-analysis has been used to explore the relationship between service innovation and firm performance, and the findings have contributed to the literature on service innovation, as well as providing future research directions.

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Purpose The purpose of this paper is to analyze the available literature on the relationship between servitization strategy and firm performance, which identifies the main streams and theoretical foundations of research and provides guidelines for future research in this area. Design/methodology/approach The paper discusses the relationship between servitization strategy and manufacturing firm performance by gathering and analyzing existing research published between 1988 and 2019 through bibliometric analysis and content analysis, and then unpacking the processes and impacts servitization has on firm performance. Findings This paper analyzes the evolution of the concept and servitization strategy of manufacturing organizations, and the relationship between servitization strategy and manufacturing company performance. Then, the authors establish an integrated theoretical framework aimed at conveying the factors and providing a practical reference. Practical implications The paper establishes an integrated theoretical framework on servitization and firm performance. The results of the systematic analysis of the literature can be used to inform managers about implementing servitization. Managers need to measure the benefits of servitization from two aspects: financial performance and non-financial performance. And managers need to consider some internal and external influencing factors to achieve a strategic–environmental–organizational fit that will bring better benefits to the firm. Originality/value The paper contributes to the existing research in three different ways. First, the study perfects the gap of research on the range of all of the factors within the relationship between servitization strategy and manufacturing company performance. Second, the study demonstrates a clear indication of how existing studies’ differences influence the research outcomes. Third, this paper proposes research problems and future research directions.

It is of significant economic value to use an electric boiler to coordinate the heating network and power grid to reduce wind curtailment during heating supply seasons in the north area. This paper presents an optimal economic dispatching model of combined heat and power energy systems to minimize the total operation cost and wind curtailment by using electric boilers. The proposed model comprehensively considers the thermal characteristics of buildings and the constraints of electric and thermal power balancing, combined heat and power (CHP) units, heat storage tanks, electric boiler power, and wind power. To address this model, a linearization optimization model is built, where different dispatch strategies under CHP only, CHP + HST (heat storage tanks), and CHP + HST + EB (electric boiler) different conditions are conducted. Thereafter, the relationship between indoor temperature and thermal power is analyzed with consideration of the temperature time-delay effect and the heat loss on heating balance. A 6-node combined heat and power energy system is used to validate the effectiveness of the proposed model and solution method. Furthermore, the case studies illustrate the impact of heat storage tanks and the electric boiler on wind power curtailment and coal consumption. INDEX TERMS Power generation dispatch, energy storage, wind power generation, thermal analysis.