Sesma Martín, Diego
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Sesma Martín
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Diego
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Economía
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Publication Open Access Freshwater for cooling needs: a long-run approach to the nuclear water footprint in Spain(Elsevier, 2017) Sesma Martín, Diego; Rubio Varas, María del Mar; Ekonomia; Institute for Advanced Research in Business and Economics - INARBE; EconomíaFrom the invention of the steam engine to the present, water has represented a significant input to the energy system, although this has been mostly ignored in the literature. In Spain, the most arid country in Europe, studies about water footprint typically just consider domestic, agricultural and industrial water uses, but water requirements for the electricity sector are omitted despite our dependence on thermal power. It has been demonstrated that for each available cooling technology, nuclear needs and consumption of water tend to be larger per MWh generated. We calculate a first approximation to the Spanish nuclear water footprint from 1969 to 2015. Our results show that while water consumed by Spanish nuclear power plants are around 3 m3 per capita/year, water withdrawals per capita/year are around 70 m3. Moreover, our analysis allows extracting conclusions focusing on a River Basins approach. What is the water impact of our nuclear power plants? Will water limit our energy future? These are some of the issues at stake.Publication Open Access Tracking water for human activities: from the ivory tower to the ground(Elsevier, 2021) Martínez Aldaya, Maite; Sesma Martín, Diego; Rubio Varas, María del Mar; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Institute for Advanced Research in Business and Economics - INARBE; Universidad Pública de Navarra / Nafarroako Unibertsitate PublikoaWater policy requires well established metrics for success. Precise metrics allow for quantifying progress and adjusting processes to produce the desired outcomes. We analyze the different schools of thought, nomenclatures and indicators developed for tracking water for human activities. After comparing a variety of terms related to water accounting used to serve the different purposes (environmental vs. ecological economics), we found that the different approaches to water tracking utilize identical terms to refer to distinctive concepts. The characterization of widely used terms such as 'water use' varies across different branches of literature. Different approaches to water measurement and its efficiency have an impact on water allocation. Our paper points out that the current definitions and methods for tracking water for human activities may offer contradictory advice over whether progress is being made towards desirable objectives, which may differ across stakeholders. This review aims at helping the transfer of academic results to empirical decision-making by discerning the differences among the variety of indicators available in the literature and their empirical implications. The ambiguity in the water terminology should be clarified before policy decisions can be useful in practice for guiding actions.