Jaewan, J. et al. (2021), US Heat Pump Market Overview – 2020, 13th IEA Heat Pump Conference, Jeju, Korea, 2021.
LLNL (Lawrence Livermore National Laboratory) (2022), Energy Flow Charts: Charting the Complex Relationships among Energy, Water, and Carbon, https://flowcharts.llnl.gov/.
MEF (Ministry of Economy and Finance, Italy) (2021), National Recovery and Resilience Plan, https://www.mef.gov.it/en/focus/The-National-Recovery-and-Resilience-Plan-NRRP/.
METI (Ministry of Economy, Trade and Industry, Japan) (2021), Outline of the 6th Strategic Energy Plan, https://www.enecho.meti.go.jp/en/category/others/basic_plan/pdf/6th_outline.pdf.
MINCOTUR (Ministerio de Industria, Comercio y Turismo [Ministry of Industry, Trade and Tourism], Spain) (2021), Recovery, Transformation and Resilience Plan, https://www.lamoncloa.gob.es/temas/fondos-recuperacion/Documents/160621-Plan_Recuperacion_Transformacion_Resiliencia.pdf.
MISE (Ministry of Economic Development, Italy) (2019), Integrated National Energy and Climate Plan, https://www.mise.gov.it/images/stories/documenti/it_final_necp_main_en.pdf.
MITECO (Ministerio para la Transición Ecológica y el Reto Demográfico [Ministry for the Ecological Transition and the Demographic Challenge], Spain) (2020a), Hoja de Ruta del Hidrógeno: una apuesta por el hidrógeno removable [Hydrogen Roadmap: a commitment to renewable hydrogen], https://www.miteco.gob.es/es/ministerio/planes-estrategias/hidrogeno/default.aspx.
MITECO (2020b), Plan Nacional Integrado de Energía y Clima [Integrated National Energy and Climate Plan] 2021-2030, https://www.miteco.gob.es/images/es/pnieccompleto_tcm30-508410.pdf