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Observatorio provincial del emprendimiento en Jaén, 3(5), mayo 2025
(Universidad de Jaén - SECOT Jaén, 2025-06-19) Márquez-García, Alfonso Miguel
El Observatorio provincial del Emprendimiento en Jaén surge de las actividades de investigación del Prof. Dr. Alfonso Miguel Márquez García, miembro del Grupo de Investigación UJA “Dirección y Organización para la Competitividad” (SEJ 232) de la Universidad de Jaén, secretario del Observatorio del Ecosistema Emprendedor de Andalucía, y socio de la Delegación de SECOT en Jaén con la intención de promover el emprendimiento en la provincia de Jaén, sus municipios y comarcas, a través de la difusión mensual de los datos de las empresas existentes en Jaén publicados por: • Autónomos: Afiliados en alta laboral (RETA) en la Tesorería General de la Seguridad Social. • Empresas por sectores: Estadística de Empresas inscritas en la Seguridad Social del Ministerio de Trabajo y Economía Social. • Empresas por municipios y comarcas: Estadística de Empresas inscritas en la Seguridad Social del Sistema de Información Multiterritorial de Andalucía (SIMA) del Instituto de Estadística y Cartografía de Andalucía. El Observatorio provincial del Emprendimiento en Jaén pretende ser una herramienta útil para la difusión de la actividad emprendedora en la provincia de Jaén, sus municipios y comarcas. La publicación mensual en un formato fácil de interpretar ofrece a los medios de comunicación y a los responsables de las actividades de promoción del emprendimiento una oportunidad de conocer mensualmente la actividad emprendedora en la provincia de Jaén, sus municipios y comarcas, y su evolución, comparada también con el resto de territorios. Los datos aquí ofrecidos no tienen carácter oficial, aunque proceden de fuentes oficiales. Se permite la utilización de los datos, tablas y gráficos citando la procedencia de los mismos. Puede citarlo así: Márquez-García, Alfonso Miguel (2025). Observatorio provincial del Emprendimiento en Jaén, 3(5): 1-193. Jaén: Universidad de Jaén. SECOT-Delegación de Jaén. Esta publicación cuenta con el apoyo de: Área de Empleo y Empresa de la Excma. Diputación Provincial de Jaén (https://www.dipujaen.es/conoce-diputacion/areas-organismos-empresas/areaJ/index.html)
A new tool to analysing photovoltaic self-consumption systems with batteries
(Elsevier, 2021-05) Muñoz-Rodríguez, Francisco José; Jiménez-Castillo, Gabino; de-la-Casa Hernández, Jesús; Aguilar-Peña, Juan Domingo
Most of the studies that can be found in the literature for analysing self-consumption systems with storage focus on global self-consumption and self-sufficiency indices and it may be very difficult to define the role of the array power and battery. In this sense, a new approach to analysing this type of systems is provided where direct and battery self-sufficiency and self-consumption indices are defined. The latter represent the direct photovoltaic self-consumed energy and the one provided by the battery. New direct and battery ZEB points are also presented. Furthermore, this type of system is generally analysed using complex 3D plots. Therefore, a new and intuitive 2D contour tool is provided: the iso selfconsumption curves. The new approach has been applied to three households located in Spain. Results show that it may be reached a global self-sufficiency of 50% considering array powers and rated capacities below 3.5 kWp and 1 kWh, respectively, where direct and battery self-sufficiency indices may reach 40% and 10%, respectively. This new method together with the graphical tool may help not only to analyse this type of system but to properly size the array power and the rated capacity from either an energetic or profitability approach.
Distributed generation and photovoltaic selfconsumption. Energy potential for the olive mill industries in Spain
(Publicaciones DYNA SL, 2020-09) Martínez-Calahorro, Antonio Javier; Jiménez-Castillo, Gabino; Rus-Casas, Catalina; Muñoz-Rodríguez, Francisco José
The industrial sector faces a new paradigm of energy offshoring, where distributed generation can play a leading role in reducing energy costs in industries, as well as in its C02 emissions. This work shows the potential that photovoltaic self-consumption systems can present to face part of the consumption in the industries of the agri-food sector, specifically the oil mills. The electrical consumption of this type of industry for an oil mill is analyzed, as well as the level of coupling between the actual consumption profiles and the estimated photovoltaic generation profiles for a given range of powers of the photovoltaic generator. The analysis method is easily extrapolated to any mill located in Spain. Likewise, and given that this type of industry has a very characteristic consumption profile, the results obtained are easily transferable to other oil mills. For the mill analyzed, and from an annual perspective, a level of use of the generated photovoltaic energy of 75% with a self-sufficiency index of 20% has been estimated, highlighting the great potential of this technology, as an energy option in this type of industry, as well as in any other that presents a consumption with little variability.
Performance analysis indices for Rooftop Solar Photovoltaic system
(IEEE, 2023-07-09) Jiménez-Castillo, Gabino; Martínez-Calahorro, Antonio Javier; Rus-Casas, Catalina; Snytko, Anastasiia; Muñoz-Rodríguez, Francisco José
The integration of rooftop solar photovoltaic systems into the electricity grid may be crucial in the current energy scenario. At present, this type of electricity generation is cost-competitive in many countries due to its modularity, the availability of the solar resource and the cost of the components, without the need for subsidies. Rooftop Solar Photovoltaic systems have the potential to cover 20-30% of electricity demand in Spain. In order to assess the potential of this technology and to facilitate the deployment of this type of systems, it is very important to provide a proper performance analysis of PV Rooftops systems from monitored data. In this way, self-consumption and self-sufficiency indices are commonly used, however they may not provide a complete assessment. Hence, indices such as the self-sufficiency index for sunshine hours, self-production index and grid-liability rate are also analyzed. These indices estimate the performance of rooftop solar PV systems and provide maximum and minimum values when estimated as a function of array peak power. Moreover, new indices such as the self-production index and the grid-liability rate for sunshine duration have been developed to estimate the system's performance during sunshine hours. These indices can complement the commonly used metrics and improve the performance analysis from monitored data. Moreover, they may also help determine the proper size of the array power of these systems in the industrial sector. The metrics are evaluated using data from four canning industries equipped with rooftop solar photovoltaic systems that have been monitored for a year.
Banking soundness indicators and sovereign risk in time of crisis: the case of the European Union
(Wiley, 2016-08) Parrado-Martínez, Purificación; Partal-Ureña, Antonio; Gómez-Fernández-Aguado, Pilar
This paper examines the impact of the soundness of the banking sector on sovereign risk of EU member countries during the financial crisis by using a selection of financial soundness indicators (FSIs) and the sovereign ratings of the three main rating agencies. Unlike previous literature that typically focus on the ability of FSIs to foresee banking crises, we estimate ordered response models to assess the power of these indicators to explain sovereign risk. Our results show that evaluations made by the rating agencies are related to the lagged values of core FSIs such that an improvement in these indicators leads to improvements in upcoming sovereign ratings. Hence, reinforced banking soundness would reduce the sovereign risk. Accordingly, governments, supervisors and central banks should pay close attention to the evolution of certain FSIs related to the banking sector, in addition to other variables that have traditionally been taken into account in analyzing sovereign risk.