IJSEPM-7586.indd International Journal of Sustainable Energy Planning and Management Vol. 36 2022 1 International Journal of Sustainable Energy Planning and Management Vol. 36 2022 1–2 *Corresponding author – e-mail: poul@plan.aau.dk ABSTRACT This 36th volume of the International Journal of Sustainable Energy Planning and Management starts at the global scale with a survey of the economy of the oil industry. Limitations of single- sector analyses of Chile is the focal point of a commentary on a previously published study in the journal Energies. The authors of the commentary find that limitation in literature survey, methodology, and data result in a signification underestimation of, e.g., the potential for photo voltaics. The potential for hydro power is affected by changes in water flows as analysed by Melo, which brings some level concern as hydro power is a key element in Brazil’s renewable energy exploitation effort. Lasty, Dall-Orsoletta et al. look into system dynamic models and whether they include social aspects in the modelling. This is only found in a minority of system dynamic models. Editorial - International Journal of Sustainable Energy Planning and Management Vol 36 Poul Alberg Østergaard*, Rasmus Magni Johannsen Department of Planning, Aalborg University, Rendsburggade 14, 9000 Aalborg, Denmark Keywords Oil sector revenues; Single vs multi sector optimisation; Hydropower projections; Social aspects in modelling; http://doi.org/10.54337/ijsepm.7586 1. Contents Oil and gas usually fall beyond the scope of the International Journal of Sustainable Energy Planning and Management, however it is a near given that the transition towards renewable energy-based energy systems must take the current fossil reality in consideration. Thus we have previously presented work on natural gas in Cyprus [1], and fossil fuel consumption in Sub-Saharan Africa [2,3]. In this issue, we expand the focus further as Verbruggen [4] looks into the global oil exploitation with a focus on profits and links to geopolitics. A 2021 paper on the Chilean electricity system [5] is the starting point for Osorio-Aravena and co-authors’ commentary [6] in this issue of the International Journal for Sustainable Energy Planning and Management. Osorio-Aravena and co-authors point to a lack of consideration for previous work in the commented paper, and that due to methodological limitations and age of data, e.g., the contribution of photovoltaics is “2.7 to 16 times less than other existing studies for the region”. A boundary issue in the work is for instance the focus on the power sector, where a significant body of contemporary work address integrated or smart energy systems. Such an approach was suggested already a decade ago [7], so papers not applying this approach do not manage to fully capture the potential energy system transition options. In 2020, Osorio-Aravena et al. [8] published a study in this journal also focusing on Chile – however applying this more holistic approach. While smart energy systems typically address the integration of energy sectors, energy system transition must also be seen in the context of other areas of society. In hydro power-rich countries, there is a link to water usage and precipitation changes coming from, e.g., climate change. Taking the Brazilian state of Minas Gerais as a case, Melo and co-authors find a reduction in inflow and thus concerns of future prospects [9]. This journal has previously published a number of studies where hydropower is one of the elements in the energy 2 International Journal of Sustainable Energy Planning and Management Vol. 36 2022 Editorial - International Journal of Sustainable Energy Planning and Management Vol 36 transition, however more focused studies have addressed hydropower from an acceptance perspective [10], a planning perspective [11,12], a market integration perspective [13], and from a perspective of electricity access [14]. Dall-Orsoletta et al. [15] present a survey of modelling approaches in system dynamic models with a focus on model representation within spatial resolution, simulation horizon, and main themes covered including supply, demand, economy, environment, transport, water, food, consumers and socio-political dynamics. Among the main findings are that social aspects are not prevalent in system dynamic modelling. A new article by Chang adds to this discussion by focusing on a tendency of coupling energy systems models to better encompass different aspects of energy systems [16]. References [1] Taliotis C, Howells M, Bazilian M, Rogner H, Welsch M. Energy security prospects in Cyprus and Israel: A focus on natural gas. Int J Sustain Energy Plan Manag 2014;3:5–20. http://doi.org/10.5278/ijsepm.2014.3.2 [2] Kwakwa PA, Adu G, Osei-Fosu AK. A time series analysis of fossil fuel consumption in Sub-Saharan Africa: evidence from Ghana, Kenya and South Africa. Int J Sustain Energy Plan Manag 2018;17. http://doi.org/10.5278/ijsepm.2018.17.4 [3] Nyasha S. Oil price and economic growth in Kenya: A trivariate simulation. Int J Sustain Energy Plan Manag 2019;19. http:// doi.org/ 10.5278/ijsepm.2019.19.2 [4] Verbruggen A. The geopolitics of trillion US$ oil & gas rents. Int J Sustain Energy Plan Manag 2022;36. http://doi. org/10.54337/ijsepm.7395 [5] Babonneau F, Barrera J, Toledo J. Decarbonizing the Chilean Electric Power System: A Prospective Analysis of Alternative Carbon Emissions Policies. Energies 2021;14. http://doi. org/10.3390/en14164768 [6] Osorio-Aravena JC, Haas J, Aghahosseini A, Breyer C. Commentary and critical discussion on ‘Decarbonizing the Chilean Electric Power System: A Prospective Analysis of Alternative Carbon Emissions Policies.’ Int J Sustain Energy Plan Manag 2022;36. http://doi.org/10.54337/ijsepm.7392 [7] Lund H, Andersen AN, Østergaard PA, Mathiesen BV, Connolly D. From electricity smart grids to smart energy systems - A market operation based approach and understanding. Energy 2012;42:96–102. http://doi. org/10.1016/j.energy.2012.04.003 [8] Osorio-Aravena JC, Aghahosseini A, Bogdanov D, Caldera U, Muñoz-Cerón E, Breyer C. Transition toward a fully renewable- based energy system in Chile by 2050 across power, heat, transport and desalination sectors. Int J Sustain Energy Plan Manag 2020;25. http://doi.org/10.5278/ijsepm.3385 [9] Melo LB, Costa AL, Estanislau FBGL, Velasquez CE, Fortini A, Moura GNP. Water-energy-emissions nexus – an integrated analysis applied to a case study. Int J Sustain Energy Plan Manag 2022;36. http://doi.org/10.54337/ ijsepm.7349 [10] Rygg BJ, Ryghaug M, Yttri G. Is local always best? Social acceptance of small hydropower projects in Norway. Int J Sustain Energy Plan Manag 2021;x. http://doi.org/10.5278/ ijsepm.6444 [11] Singh MK. A planning perspective on Hydropower Development in the Indian Himalayan Region. Int J Sustain Energy Plan Manag 2020;28. http://doi.org/10.5278/ ijsepm.4304 [12] Putranto LM. Generation expansion planning for high-potential hydropower resources: The case of the Sulawesi electricity system. Int J Sustain Energy Plan Manag 2020;28:37–52. http://doi.org/10.5278/ijsepm.3247 [13] Alnæs EN, Grøndahl RB, Fleten S-E, Boomsma TK. Insights from actual day-ahead bidding of hydropower. Int J Sustain Energy Plan Manag 2015;7:37–58. http://doi.org/10.5278/ ijsepm.2015.7.4 [14] Ebhota WS. Power Accessibility, Fossil Fuel and the Exploitation of Small Hydropower Technology in Sub-Saharan Africa. Int J Sustain Energy Plan Manag 2019;19. http://dx.doi. org/10.5278/ijsepm.2019.19.3 [15] Dall-Orsoletta A. A review of social aspects integration in system dynamics energy systems models. Int J Sustain Energy Plan Manag 2022;36. http://doi.org/10.54337/ ijsepm.7478 [16] Chang M, Lund H, Thellufsen JZ, Østergaard PA. Perspectives on purpose-driven coupling of energy system models. Energy 2022:126335. http://doi.org/ 10.1016/j.energy.2022.126335