Sustainable development has positioned itself as a fundamental element of a transversal nature, being linked to the energy transition. In this sense, it must be included as a mainstream objective of all actions and strategies developed at the social, academic, business, and political levels. However, to the best of our knowledge, no bibliometric work has been carried out to date to analyze the main contributions to the literature focused on the concepts of renewable energy and sustainable development. The main aim of this paper is to establish the key trends and academic contributions made in the field of renewable energies and sustainable development. For this purpose, a bibliometric and co-citation analysis has been carried out using the Bibliometrix^® tool, an open-source R package. The results show that this is a field of study that has significantly increased its importance in recent years, which is illustrated using different indicators. We conclude that research trends seem to be directed towards managing the transition to a new, more sustainable energy model composed of renewable energy production systems, in addition to the adoption of new technologies to increase the efficiency of products and power transmission systems. In this respect, the transition towards a new, more sustainable energy model seems to be a fundamental step to guarantee the sustainability of human action.

The wine sector occupies a prominent place in the Spanish agrifood industry, for both the quality and the variety of its production. Although the protection of geographical designations is at the heart of Spain and European Union wine quality policy, much empirical investigation is still needed to assess the role played by business agglomerations in creating value for the territory through these quality protection systems. The aim of the paper is to identify Spanish wine clusters and characterize them from geographical, historical and economic perspectives. A deep analysis of the six wine clusters identified is carried out given the importance of these competitive environments in terms of degree of productive specialization, employment and Protected Designation of Origin (PDO) at the national level. The results show that while the area of cultivated vineyards, the number of winegrowers and wineries in the six analysed cases have decreased over the last two decades, production, sales volume and especially their economic value have increased considerably. This could explain the orientation towards a differentiation strategy, in recent years, based on the reputation of the collective brand, which is translated into the marketed product.

Nowadays, the attitude of companies seems to play a relevant role in detecting and exploiting opportunities to create value, especially in terms of knowledge and cooperation. Thereon, the concept of entrepreneurial orientation has become relevant over the last years. Firms are entrepreneurially oriented when their decision-making, techniques, and procedures allow them to identify opportunities, develop a proactive mindset, and use creative ways to achieve their objectives. The purpose of this paper is to empirically analyze the relationship between entrepreneurial orientation and companies’ innovation capacity, in addition to the mediating effect of entrepreneurial networks and firms’ learning capacity in this relationship. A sample of 197 Spanish companies in the energy sector is analyzed using the variance-based structural equation modeling technique (PLS-SEM), using the software “SmartPLS” in its version 3.9. The results show a direct positive and significant influence of entrepreneurial orientation on companies’ innovation capacity, as well as the existence of an indirect effect through the mediation of entrepreneurial networks and the learning capacity of firms. It is concluded that businesses must dedicate time and resources to develop a strong entrepreneurial orientation which, in addition to allowing them to exploit external entrepreneurial networks, boosts their learning and innovation capabilities, favoring the development of new sustainable possibilities for value creation.

The present research work shows the results obtained in an analysis of the existing literature about one of the ‘topics’ which arouses more interest among economists, geographers, theorists of business organization and strategic management or the actual officials in charge of territory arrangement and planning: that of clusters or industrial firm or groupings. More precisely, a total of 1,344 research papers published in different journals in the areas of economy, management, business, planning and development, urban studies and geography during the period 2000 and 2015 were analysed for the purpose of trying to identify and visualize the intellectual structure or knowledge base of the research developed about the aforementioned phenomena. As for the methodology utilized, of a quantitative nature, it is based on the use of bibliometric techniques – in particular, of document co-citation analysis (DCA) – and of social networks analysis.

Purpose: This paper aims to know the dimension and scope that research on the district effect has had in the literature about industrial districts, as well as to shed some light on the connection between industrial districts and business results; or expressed differently, on how being located in an industrial district or not affects or might influence the performance of the firms located therein.Design/methodology/approach: The purpose of this paper has been achieved through an exhaustive review of the empirical literature dedicated to the so-called district effect. The papers selected in the analysis were selected on the basis of the following criteria: (1) publications in scientific journals; (2) studies carried out in Spain and Italy; and (3) works published between 1994 and 2017.Findings: The outcome of the literature review suggests, on the one hand, that the debate on the extent to which the territory influences the competitiveness of firms located in industrial districts still remains a topic of great interest. It can additionally be observed that most of the works dedicated to measuring the district effect have done so using three dimensions: (1) productivity/efficiency; (2) international competitiveness; and (3) innovation.Practical implications: From a theoretical perspective, the findings of this paper make it possible to carry out an integrating proposal for the measurement of the district effect which revolves around three dimensions (productivity/efficiency; international competitiveness; and innovation).Originality/value: This paper makes a twofold contribution to the literature: (i) it brings together the most important empirical contributions that measure the competitive advantages obtained by firms located in industrial districts through the district effect; and (ii) it theoretically and empirically establishes the essential dimensions of that effect.