The CEO of Repsol Mr Josu Jon Imaz and the Chief of Staff of the Spanish Air Force Air General Javier Salto Martínez-Avial have signed a collaboration agreement within the scope of the Connected, Sustainable and Intelligent Air Base, BACSI, project. The agreement between the multi-energy company and the Air Force seeks to promote sustainable mobility in the air sector. The analysis and formulation of proposals aimed at promoting the development and consumption of new fuels with low environmental impact, such as low-carbon fuels, and the implementation of joint R&D&I actions.Likewise, both organizations undertake, individually and jointly, to share strategies that favor the development of sustainability and energy efficiency initiatives that benefit both institutions.The Spanish Air Force has launched the BACSI project, whose main objective is to increase the effectiveness, productivity, efficiency and sustainability of air bases. Therefore, the alliance with Repsol, a leading company in multi-energy supply in Spain, will allow the development of systems perfectly aligned with several of the objectives of the Air Force BACSI project, mainly in the functional areas of sustainability 4.0, global connectivity, and energy efficiency, and environmental sustainability.This collaboration is part of the Defense Policy Directive, August 4, 2020, which includes among its objectives "to support the defense industry, contributing to boosting the economy and the national productive base and to ensuring its resilience and the development of a national and European industrial, technological and innovation base in Defense.”To fulfill its mission successfully, the Air Force needs to have cutting-edge capabilities, which are achieved thanks to innovation and efficiency, areas where Repsol is a benchmark and which are essential to moving forward with the ambitious project of the Sustainable and Intelligent Connected Air Base (BACSI). The BACSI project aims to be a driving force for the EA to become the Aerospace Force that Spain needs, applying disruptive technologies to improve efficiency in using available resources and maximizing operational effectiveness.