During the development of this dissertation several ideas, some of which could lay the foun-dations for new works on this topic, have emerged, namely:
• To develop and study a more detailed model of theH2PP, which could, for instance, include minimum up and down-time constraints for the electrolyser and for the fuel cell;
• Include the impact of CAPEX and OPEX values in the analysis of theH2PP when it is part of the VPP;
• Quantify the change in GHG emission when theH2PP is part of the VPP;
• Study the participation of theH2PP in both the energy and ancillary services market;
• Increase the time granularity of the simulations, for instance, by decreasing the duration of each time period from 1 hour to 30 or even 15 minutes, for instance.
[1] European Commission. 2050 long-term strategy, 2020. URL: https://ec.europa.
eu/clima/eu-action/climate-strategies-targets/2050-long-term-strategy_en[last accessed 2022-5-10].
[2] United Nations. Paris agreement, 2015. URL: https://unfccc.int/sites/
default/files/english_paris_agreement.pdf[last accessed 2023-1-10].
[3] U.S. Energy Information Administration. International energy outlook 2021, 2021. URL:
https://www.eia.gov/outlooks/ieo/?src=home-b2[last accessed 2022-5-10].
[4] National Renewable Energy Laboratory. Integrating variable renewable energy into the grid: Key issues, 2015. URL: https://www.nrel.gov/docs/fy15osti/63033.
pdf[last accessed 2022-7-10].
[5] Meghan Gordon and Maya Weber. Global energy demand to grow 47% by 2050, with oil still top source: Us eia, 2021. URL: https://www.spglobal.com/platts/
en/market-insights/latest-news/oil/100621-global-energy-demand-to-grow-47-by-2050-with-oil-still-top-source-us-eia [last accessed 2022-5-11].
[6] Energy Digital Magazine. Hydrogen storage solution for an intermittent energy source: So-lar, May 2020. URL: https://energydigital.com/smart-energy/hydrogen-storage-solution-intermittent-energy-source-solar[last accessed 2022-3-30].
[7] Erin Coates. The future of hydrogen: Why victrex peek is anticipated to support energy transition to hydrogen, May 2021. URL: https://www.victrex.com/en/blog/
2021/peek-support-energy-transition-to-hydrogen [last accessed 2022-3-29].
[8] European Commission. A hydrogen strategy for a climate-neutral europe, 2020.
URL: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%
3A52020DC0301[last accessed 2022-4-20].
[9] Jeffrey Goldmee and John Catillaz. Hydrogen for power generation, March 2021.
URL: https://www.ge.com/content/dam/gepower-new/global/en_US/
downloads/gas-new-site/future-of-energy/hydrogen-for-power-gen-gea34805.pdf[last accessed 2022-3-20].
[10] Fuel Cells and Hydrogen Joint Undertaking. A portfolio of power-trains for europe: a fact-based analysis, 2020. URL: https://www.eesi.org/files/europe_vehicles.
pdf[last accessed 2022-3-4].
113
[11] IRENA. Hydrogen, 2022. URL:https://www.irena.org/Energy-Transition/
Technology/Hydrogen[last accessed 2023-1-25].
[12] Direção-Geral de Energia e Geologia (DGEG). National strategy for hydrogen.
URL: https://www.dgeg.gov.pt/en/transversal-areas/international-affairs/energy-policy/national-strategy-for-hydrogen/.
[13] Presidência do Conselho de Ministros. Resolução do conselho de min-istros n.º 63/2020, August 2020. URL: https://www.portugal.
gov.pt/download-ficheiros/ficheiro.aspx?v=%3d%3dBQAAAB%
2bLCAAAAAAABAAzNDC2MAAAFEkjvQUAAAA%3d[last accessed 2022-4-5].
[14] Direção-Geral de Energia e Geologia (DGEG). Relatório de monitorização da segu-rança de abastecimento do sistema nacional de gás 2020, período 2021-2040 (rmsa-g 2020). URL: https://www.erse.pt/media/xtym4zdt/anexo-1-do-pdirg-pressupostos-do-rmsa-g-2020-dgeg.pdf[last accessed 2022-11-26].
[15] Britannica. hydrogen. URL:https://www.britannica.com/science/hydrogen [last accessed 2022-3-10].
[16] Sarah Nightingale. Hydrogen fuel is getting buzz, but here’s why it hasn’t gone mainstream. Technical report, University of Southern California, Autumn 2019.
URL: https://news.usc.edu/trojan-family/why-hydrogen-fuel-isnt-mainstream-as-fossil-fuel-alternative/[last accessed 2022-3-12].
[17] Engineering ToolBox. Fuels - higher and lower calorific values. URL:
https://www.engineeringtoolbox.com/fuels-higher-calorific-values-d_169.html[last accessed 2022-3-12].
[18] Clarke Energy. Heating value. URL: https://www.clarke-energy.com/
heating-value/[last accessed 2023-1-15].
[19] Antonio Escamilla, David Sánchez, and Lourdes García-Rodríguez. Assessment of power-to-power renewable energy storage based on the smart integration of hydrogen and micro gas turbine technologies. International Journal of Hydrogen Energy, 2022. URL:https:
//www.sciencedirect.com/science/article/pii/S036031992201388X, doi:https://doi.org/10.1016/j.ijhydene.2022.03.238.
[20] EDP. As cores do hidrogénio: verde é a cor do futuro. URL:https://www.edp.com/
pt-pt/historias-edp/cores-do-hidrogenio[last accessed 2022-3-22].
[21] Thomas Briault. When will hydrogen become a cost-competitive industry? URL:
https://www.arup.com/perspectives/when-will-hydrogen-become-a-cost-competitive-industry[last accessed 2022-4-3].
[22] CSIRO. Green, blue, brown: the colours of hydrogen explained, May 2021. URL:https:
//blog.csiro.au/green-blue-brown-hydrogen-explained/ [last accessed 2022-12-22].
[23] National Grid. The hydrogen colour spectrum. URL:https://www.nationalgrid.
com/stories/energy-explained/hydrogen-colour-spectrum [last accessed 2023-1-22].
[24] EWE AG. The colours of hydrogen. URL: https://www.ewe.com/en/shaping-the-future/hydrogen/the-colours-of-hydrogen[last accessed 2023-1-23].
[25] Alfredo Ursua, Luis M. Gandia, and Pablo Sanchis. Hydrogen production from water elec-trolysis: Current status and future trends. Proceedings of the IEEE, 100(2):410–426, 2012.
doi:10.1109/JPROC.2011.2156750.
[26] Foteini M. Sapountzi, Jose M. Gracia, C.J. (Kees-Jan) Weststrate, Hans O.A. Fredriksson, and J.W. (Hans) Niemantsverdriet. Electrocatalysts for the generation of hydrogen, oxygen and synthesis gas. Progress in Energy and Combustion Science, 58:1–35, January 2017.
doi:10.1016/j.pecs.2016.09.001.
[27] Robert Tichler, Markus Lehner, Horst Steinmüller, and Markus Koppe. Power-to-Gas:
Technology and Business Models. Springer, January 2014. doi:10.1007/978-3-319-03995-4.
[28] Tom Smolinka, Henry Bergmann, Juergen Garche, and Mihails Kusnezoff. Chap-ter 4 - the history of waChap-ter electrolysis from its beginnings to the present. In Tom Smolinka and Jurgen Garche, editors, Electrochemical Power Sources: Fundamen-tals, Systems, and Applications, pages 83–164. Elsevier, 2022. URL: https://www.
sciencedirect.com/science/article/pii/B9780128194249000100, doi:
https://doi.org/10.1016/B978-0-12-819424-9.00010-0.
[29] Subramani Krishnan, Matthew Fairlie, Philipp Andres, Thijs de Groot, and Gert Jan Kramer. Chapter 10 - power to gas (h2): alkaline electrolysis. In Martin Jungin-ger and Atse Louwen, editors, Technological Learning in the Transition to a Low-Carbon Energy System, pages 165–187. Academic Press, 2020. URL: https://www.
sciencedirect.com/science/article/pii/B9780128187623000108, doi:
https://doi.org/10.1016/B978-0-12-818762-3.00010-8.
[30] SINTEF. Electrolysers towards eu mawp 2023 targets and beyond, October 2022. URL:
https://www.haeolus.eu/?p=1155[last accessed 2022-11-21].
[31] J.D. Holladay, J. Hu, D.L. King, and Y. Wang. An overview of hydrogen pro-duction technologies. Catalysis Today, 139(4):244–260, 2009. URL: https:
//www.sciencedirect.com/science/article/pii/S0920586108004100, doi:https://doi.org/10.1016/j.cattod.2008.08.039.
[32] Claude Lamy and Pierre Millet. A critical review on the definitions used to calculate the energy efficiency coefficients of water electrolysis cells working under near ambient temperature conditions. Journal of Power Sources, 447:227350, 2020. URL: https:
//www.sciencedirect.com/science/article/pii/S0378775319313436, doi:https://doi.org/10.1016/j.jpowsour.2019.227350.
[33] G.D. Martin K.W. Harrison, R. Remick and A. Hoskin. Hydrogen production: Funda-mentals and cas study summaries, May 2010. URL:https://www.nrel.gov/docs/
fy10osti/47302.pdf[last accessed 2022-3-31].
[34] Florentin Eckl, Ludger Eltrop, Ana Moita, and Rui Costa Neto. Techno-economic evaluation of two hydrogen supply options to southern germany: On-site production and import from portugal. International Journal of Hydrogen Energy, 47(60):25214–25228, 2022. URL: https://www.sciencedirect.com/science/article/pii/
S0360319922024685, doi:https://doi.org/10.1016/j.ijhydene.2022.
05.266.
[35] Francesco Pasimeni, Ufuk Sezer, Francisco Boshell, and Geert Boedt. Innovation trends in electrolysers for hydrogen production, 2022. URL: https://www.irena.org/-/media/Files/IRENA/Agency/Publication/2022/May/IRENA_EPO_
Electrolysers_H2_production_2022.pdf[last accessed 2022-6-26].
[36] Rebecca R. Beswick, Alexandra M. Oliveira, and Yushan Yan. Does the green hy-drogen economy have a water problem ? ACS Energy Letters, 6(9):3167–3169, 2021. URL: https://doi.org/10.1021/acsenergylett.1c01375, doi:10.
1021/acsenergylett.1c01375.
[37] D. Carvalho, S. Cardoso Pereira, and A. Rocha. Future surface temperature changes for the iberian peninsula according to euro-cordex climate projections. Climate Dynam-ics, 56(1):123–138, Jan 2021. URL: https://doi.org/10.1007/s00382-020-05472-3,doi:10.1007/s00382-020-05472-3.
[38] Nieves Lorenzo, Alejandro Díaz-Poso, and Dominic Royé. Heatwave intensity on the iberian peninsula: Future climate projections. Atmospheric Research, 258:105655, 2021. URL: https://www.sciencedirect.com/science/article/pii/
S0169809521002076, doi:https://doi.org/10.1016/j.atmosres.2021.
105655.
[39] M.N. Lorenzo, I. Alvarez, and J.J. Taboada. Drought evolution in the nw iberian peninsula over a 60 year period (1960–2020). Journal of Hydrology, 610:127923, 2022. URL: https://www.sciencedirect.com/science/article/pii/
S002216942200498X, doi:https://doi.org/10.1016/j.jhydrol.2022.
127923.
[40] Clean Hydrogen Joint Undertaking. Strategic research and innovation: Agenda 2021 – 2027, February 2022. URL: https://www.clean-hydrogen.europa.
eu/system/files/2022-02/Clean%20Hydrogen%20JU%20SRIA%20-%20approved%20by%20GB%20-%20clean%20for%20publication%20%28ID%
2013246486%29.pdf[last accessed 2022-5-21].
[41] Fuel Cells and Hydrogen Joint Undertaking. Scaling-up innovations on renewable hydrogen production and use, June 2021. URL:https://ec.europa.eu/docsroom/
documents/45992/attachments/7/translations/en/renditions/native [last accessed 2022-3-27].
[42] Demo4Grid. Assessment of market potential: Demo4grid, February 2021. URL:https:
//www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=
rja&uact=8&ved=2ahUKEwjigLv248X3AhW1wAIHHattBEQQFnoECAYQAQ&
url=https%3A%2F%2Fec.europa.eu%2Fresearch%2Fparticipants%
2Fdocuments%2FdownloadPublic%3FdocumentIds%3D080166e5d9fdc289%
26appId%3DPPGMS&usg=AOvVaw33Xd8Nr2ahkJ2Phqh1MAMi [last accessed 2022-4-21].
[43] Maider Santos Eduardo García and Valerio Mariani. Protocols for demonstration of fuel-production strategy, October 2021. URL:https://www.Haeolus.eu/wp-content/
uploads/2021/10/D8.3.pdf[last accessed 2022-3-28].
[44] Refhyne. D7.2 brief summary report on initial policy implications of the bulk electrolyser model, October 2020. URL:https://refhyne.eu/wp-content/uploads/2021/
11/D7.2-report-v7.0-clean.pdf[last accessed 2022-4-19].
[45] Khan M.A., Young C., MacKinnon C., and Layzell D. The techno-economics of hy-drogen compression. Transition Accelerator Technical Briefs, 1(1):1–36, 2021. URL:
https://transitionaccelerator.ca/wp-content/uploads/2021/10/TA-
Briefs-1.2-The-Techno-Economics-of-Hydrogen-Compression-FINALPDF.pdf.
[46] Andreas Kade. Hydrogen and methane testing field at the ilk. URL: http:
//web.archive.org/web/20201024165845/https://www.ilkdresden.
de/en/service/research-and-development/project/hydrogen-test-area-at-ilk-dresden/[last accessed 2022-3-19].
[47] Andreas Lanz, James W. Heffel, and C. Messer. Hydrogen Fuel Cell Engines and Re-lated Technologies. College of the Desert. Energy Technology Training Center, 2001.
URL: https://rosap.ntl.bts.gov/view/dot/14966/dot_14966_DS1.pdf?
download-document-submit=Download.
[48] Steven De Tollenaere, Sam Schotte, and Arne Depuydt. Ishy - implementation of hy-brid shipping. URL: https://ishy.eu/wp-content/uploads/2022/03/ISHY-Implementation-of-hybrid-shipping.pdf[last accessed 2022-4-15].
[49] Sofoklis S. Makridis. Hydrogen storage and compression. Energy Engineering. Institution of Engineering and Technology, 2016. URL: https://digital-library.theiet.
org/content/books/10.1049/pbpo101e_ch1,doi:10.1049/PBPO101E_ch1. [50] Jinyang Zheng, Xin Zhang, Ping Xu, Chaohua Gu, Bing Wu, and Yongping Hou.
Standard-ized equation for hydrogen gas compressibility factor for fuel consumption applications.
International Journal of Hydrogen Energy, 41(15):6610–6617, 2016. URL: https:
//www.sciencedirect.com/science/article/pii/S0360319915310181, doi:https://doi.org/10.1016/j.ijhydene.2016.03.004.
[51] Ahmed Elberry, Jagruti Thakur, Annukka Santasalo-Aarnio, and Martti Larmi. Large-scale compressed hydrogen storage as part of renewable electricity storage systems.International Journal of Hydrogen Energy, 46, 03 2021. doi:10.1016/j.ijhydene.2021.02.
080.
[52] Baldur Eliasson Ulf Bossel. Energy and the hydrogen economy. URL:https://afdc.
energy.gov/files/pdfs/hyd_economy_bossel_eliasson.pdf [last accessed 2022-4-27].
[53] J. Cornish G. Parks, R. Boyd and R. Remick. Hydrogen station compression, storage, and dispensing technical status and costs, May 2014. URL:https://www.hydrogen.
energy.gov/pdfs/58564.pdf[last accessed 2022-5-22].
[54] Tractebel and Hinicio. Study on early business cases for h2 in energy storage and more broadly power to h2 applications, June 2017. URL: https://hsweb.hs.uni-hamburg.de/projects/star-formation/hydrogen/P2H_Full_Study_
FCHJU.pdf[last accessed 2022-5-28].
[55] F. Sergi et al. Superp2g 1. internal report m1: Data collection and management – product specifications, May 2021. URL: https://superp2g.eu/data-collection-and-management-product-specifications/[last accessed 2022-6-21].
[56] BETA Machinery. Foundation and skid design considerations for large, high-speed reciprocating compressors, October 2012. URL: https://www.betamachinery.
com/assets/pdfs/Technical_Articles/CT2-2012_Foundations-and-Skids_large-high-speed-recips.pdf[last accessed 2023-1-21].
[57] Hydrexia. Hydrogen storage equipment. URL:https://hydrexia.com/equipment [last accessed 2023-1-24].
[58] Air Liquide. Storing hydrogen. URL: https://energies.airliquide.com/
resources-planet-hydrogen/how-hydrogen-stored [last accessed 2022-3-15].
[59] U.S. Department of Energy. Hydrogen storage. URL: https://www.energy.gov/
eere/fuelcells/hydrogen-storage[last accessed 2022-3-15].
[60] J.O. Abe, A.P.I. Popoola, E. Ajenifuja, and O.M. Popoola. Hydrogen en-ergy, economy and storage: Review and recommendation. International Journal of Hydrogen Energy, 44(29):15072–15086, 2019. URL: https:
//www.sciencedirect.com/science/article/pii/S036031991931465X, doi:https://doi.org/10.1016/j.ijhydene.2019.04.068.
[61] Gabriel Brindusescu. Toyota fcv hydrogen tanks are bulletproof, January 2014. URL:
https://www.autoevolution.com/news/toyota-fcv-hydrogen-tanks-are-bulletproof-74977.html[last accessed 2022-3-11].
[62] Haeolus. Haeolus in a nutshell. URL:https://www.Haeolus.eu/[last accessed 2022-3-28].
[63] Lapesa Grupo Empresarial. Pressure tanks for h2 storage, January 2022.
URL: https://lapesa.es/sites/default/files/ficha_depositos_
hidrogeno_h2_2201-01_en.pdf[last accessed 2022-4-26].
[64] Atlas Salt. Bringing the power of salt to investors, September 2021. URL: https://
atlassalt.ca/AtlasSalt.pdf[last accessed 2022-3-11].
[65] Engie. H2 in the underground: Are salt caverns the future of hydrogen storage?, July 2021.
URL: https://innovation.engie.com/en/articles/detail/hydrogene-souterrain-stockage-sel-cavites-mines/25906/12/1 [last accessed 2022-3-10].
[66] Dr. Grégoire Hévin – Storengy. Underground storage of hydrogen in salt caverns, November 2019. URL:https://energnet.eu/wp-content/uploads/2021/02/
3-Hevin-Underground-Storage-H2-in-Salt.pdf[last accessed 2022-3-11].
[67] G. Hevin (Storengy) A. Reveillere (Gestock). Future roles of hydrogen in the en-ergy transition and examples of operating and future hydrogen storages, Novem-ber 2019. URL: https://energnet.eu/wp-content/uploads/2021/02/
1-Reveillere-GK-STORENGY-Future-H2-and-Etrez-storage.pdf [last ac-cessed 2022-3-12].
[68] U.S. Department of Energy. Hydrogen pipelines. URL:https://www.energy.gov/
eere/fuelcells/hydrogen-pipelines[last accessed 2022-3-25].
[69] Fuel Cell Works. Netherlands is throwing a hydrogen life preserver to pipelines.
URL: https://fuelcellsworks.com/news/netherlands-is-throwing-a-hydrogen-life-preserver-to-pipelines/[last accessed 2022-3-19].
[70] U.S. Department of Energy. Gaseous hydrogen delivery. URL:https://www.energy.
gov/eere/fuelcells/gaseous-hydrogen-delivery[last accessed 2022-3-18].
[71] U.S. Department of Energy. Hydrogen tube trailers. URL:https://www.energy.gov/
eere/fuelcells/hydrogen-tube-trailers[last accessed 2022-3-17].
[72] Next Wave. Next nordic green transport wave - large vehicles: Deliverable 2.4, 2021. URL: http://norden.diva-portal.org/smash/get/diva2:1604793/
FULLTEXT01.pdf[last accessed 2022-7-15].
[73] Stephanie AO. Analysis of hydrogen transportation cost in china, September 2020. URL:
https://www.integralnewenergy.com/?p=30642[last accessed 2022-7-27].
[74] Henrietta W. Langmi, Nicolaas Engelbrecht, Phillimon M. Modisha, and Dmitri Bessarabov. Chapter 13 - hydrogen storage. In Tom Smolinka and Jur-gen Garche, editors, Electrochemical Power Sources: Fundamentals, Systems, and Applications, pages 455–486. Elsevier, 2022. URL: https://www.
sciencedirect.com/science/article/pii/B9780128194249000069, doi:https://doi.org/10.1016/B978-0-12-819424-9.00006-9.
[75] U.S. Department of Energy. Liquid hydrogen delivery. URL:https://www.energy.
gov/eere/fuelcells/liquid-hydrogen-delivery[last accessed 2022-3-18].
[76] NASA. Space applications of hydrogen and fuel cells. URL:https://www.nasa.gov/
content/space-applications-of-hydrogen-and-fuel-cells[last accessed 2022-3-21].
[77] K. Mark Thomas. Hydrogen adsorption and storage on porous materials. Cataly-sis Today, 120(3):389–398, 2007. Proceedings of the Korea Conference on Innova-tive Science and Technology (KCIST-2005):Frontiers in Hydrogen Storage Materials and Technology. URL:https://www.sciencedirect.com/science/article/pii/
S0920586106006377, doi:https://doi.org/10.1016/j.cattod.2006.09.
015.
[78] Patrick Preuster, Alexander Alekseev, and Peter Wasserscheid. Hydrogen stor-age technologies for future energy systems. Annual Review of Chemical and Biomolecular Engineering, 8(1):445–471, 2017. PMID: 28592172. URL: https:
//doi.org/10.1146/annurev-chembioeng-060816-101334, doi:10.1146/
annurev-chembioeng-060816-101334.
[79] U.S. Department of Energy. Combined heat and power technology fact sheet series, September 2016. URL: https://www.energy.gov/sites/prod/files/2016/
09/f33/CHP-Fuel%20Cell.pdf[last accessed 2022-5-28].
[80] Doosan fue cell. Purecell model 400 hydrogen. URL: https://www.
doosanfuelcell.com/en/prod/prod-0102/[last accessed 2022-5-30].
[81] Kazui Yoshida, Hom B. Rijal, Kazuaki Bohgaki, Ayako Mikami, and Hiroto Abe. Energy-saving and co2-emissions-reduction potential of a fuel cell cogeneration system for condo-miniums based on a field survey. Energies, 14(20), 2021. URL: https://www.mdpi.
com/1996-1073/14/20/6611,doi:10.3390/en14206611.
[82] F. Accurso, M. Gandiglio, M. Santarelli, J Buunk, T. Hakala, J. Kiviaho, S. Modena, M. Münch, and E. Varkaraki. Installation of fuel cell-based cogeneration systems in the commercial and retail sector: Assessment in the framework of the comsos project. Energy Conversion and Management, 239:114202, 2021. URL: https:
//www.sciencedirect.com/science/article/pii/S0196890421003782, doi:https://doi.org/10.1016/j.enconman.2021.114202.
[83] MHI. Material handling. URL: https://www.mhi.org/fundamentals/
material-handling[last accessed 2022-4-30].
[84] RAKA. Powered industrial trucks (forklift): Types and fundamentals - types. URL:
https://www.osha.gov/etools/powered-industrial-trucks/types-fundamentals/types[last accessed 2022-4-30].
[85] Cynthia Thamires da Silva, Bruno Martin de Alcântara Dias, Rui Esteves Araújo, Ed-uardo Lorenzetti Pellini, and Armando Antônio Maria Laganá. Battery model identifi-cation approach for electric forklift appliidentifi-cation. Energies, 14(19), 2021. URL:https:
//www.mdpi.com/1996-1073/14/19/6221,doi:10.3390/en14196221. [86] Tomás Larriba, Raquel Garde, and Massimo Santarelli. Fuel cell early markets:
Techno-economic feasibility study of pemfc-based drivetrains in materials handling vehicles.
International Journal of Hydrogen Energy, 38(5):2009–2019, 2013. URL: https:
//www.sciencedirect.com/science/article/pii/S0360319912024949, doi:https://doi.org/10.1016/j.ijhydene.2012.11.048.
[87] U.S. Department of Energy. Early markets: Fuel cells for material handling equipment, De-cember 2016. URL: https://www.energy.gov/sites/prod/files/2016/12/
f34/fcto_early_markets_mhe_fact_sheet.pdf[last accessed 2022-4-28].
[88] Toyota. Lithium-ion battery solutions from toyota, 2021. URL: https://toyota- forklifts.eu/solutions/energy-solutions/lithium-ion-battery-solutions-from-toyota/[last accessed 2022-4-27].
[89] Mid Columbia Forklift Phil Hanford. Are lithium-ion forklift batteries worth the price? two surprising stats, October 2020. URL: https://www.midcoforklift.com/blog/
lithium-forklift-batteries-better-than-lead-acid [last accessed 2022-4-30].
[90] Flux Power Andrew Lerma. Are lithium-ion batteries better than lead acid for fork-lifts?, March 2019. URL: https://www.fluxpower.com/blog/are-lithium-batteries-better-than-lead-acid-for-forklifts[last accessed 2022-5-2].
[91] National Renewable Energy Laboratory. An evaluation of the total cost of ownership of fuel cell-powered material handling equipment. URL:https://www.nrel.gov/docs/
fy13osti/56408.pdf[last accessed 2022-4-30].
[92] Toyota. What fuel cell technology means for your forklift, 2022. URL:
https://toyota-forklifts.eu/solutions/energy-solutions/what-fuel-cell-technology-means-for-your-forklift/ [last accessed 2022-4-27].
[93] Toyota. Hydrogen fuel cell forklifts: An alternative energy solution, 2020.
URL: https://www.toyotaforklift.com/blog/hydrogen-fuel-cell-forklifts-an-alternative-energy-solution[last accessed 2022-4-28].
[94] DanTruck. Dantruck 3000 power hydrogen. URL: http://www.hylift- europe.eu/public/Publications/DanTruck_3000-Power-Hydrogen-forklift_ENG_web.pdf[last accessed 2022-4-28].
[95] Yvonne Ruf et al. Fuel cells and hydrogen applications for regions and cities, vol 1, September 2017. URL: https://www.rolandberger.
com/publications/publication_pdf/roland_berger_fuel_cell_
technologies_applications.pdf[last accessed 2022-4-28].
[96] Simplexity. Fuel cells and lithium-ion batteries in comparison. URL: https:
//simplexity.news/en/fuel-cells-and-lithium-ion-batteries-in-comparison/[last accessed 2022-4-28].
[97] Linde. Into the future with hydrogen fuel cell technology from linde. URL: https:
//www.linde-mh.com/en/About-us/Innovations-from-Linde/Fuel-Cells.html[last accessed 2022-5-2].
[98] Plug Power Inc. Coca-cola to install forklifts with plug power fuel cells.Fuel Cells Bulletin, 2009(11):3, 2009. URL:https://www.sciencedirect.com/science/article/
pii/S1464285909703451, doi:https://doi.org/10.1016/S1464-2859(09)70345-1.
[99] Industry Week. Coca-cola deploys a new fleet of fuel cell-powered lift trucks, February 2012. URL: https://www.industryweek.com/leadership/companies- executives/article/21957450/cocacola-deploys-a-new-fleet-of-fuel-cellpowered-lift-trucks[last accessed 2022-4-29].
[100] Markus Felgenhauer and Thomas Hamacher. State-of-the-art of commercial elec-trolyzers and on-site hydrogen generation for logistic vehicles in south carolina.
International Journal of Hydrogen Energy, 40(5):2084–2090, 2015. URL: https:
//www.sciencedirect.com/science/article/pii/S0360319914034193, doi:https://doi.org/10.1016/j.ijhydene.2014.12.043.
[101] European Commission. Demonstration of new qualitative innovative concept of hydrogen out of windturbine electricity. URL: https://cordis.europa.eu/project/id/
303411/reporting[last accessed 2022-3-29].
[102] Air Liquide. Air liquide opens a new hydrogen station at carrefour to supply europe’s largest forklift trucks fleet, November 2018. URL:https://energies.airliquide.
com/air-liquide-opens-new-hydrogen-station-carrefour-supply-europes-largest-forklift-trucks-fleet[last accessed 2022-5-2].
[103] The driven. German retailer switches battery electric logistics fleet to green hydrogen fuel cell, April 2022. URL: https://thedriven.io/2022/04/02/german- retailer-switches-battery-electric-logistics-fleet-to-green-hydrogen-fuel-cell/[last accessed 2022-4-29].
[104] David R Baker. Walmart will run forklifts on green hydrogen in plug power deal, April 2022. URL: https://www.bloomberg.com/news/articles/2022-04- 19/walmart-will-run-forklifts-on-green-hydrogen-in-plug-power-deal[last accessed 2022-5-3].
[105] Office of Energy Efficiency and Renewable Energy. Fact of the month november 2018:
There are now more than 20,000 hydrogen fuel cell forklifts in use across the united states, November 2018. URL: https://www.energy.gov/eere/fuelcells/fact- month-november-2018-there-are-now-more-20000-hydrogen-fuel-cell-forklifts-use[last accessed 2022-5-3].
[106] Roberta Caponi, Andrea Monforti Ferrario, Luca Del Zotto, and Enrico Bocci. Hydrogen refueling station cost model applied to five real case studies for fuel cell buses. E3S Web of Conferences, 312:07010, 10 2021. URL: https://www.researchgate.
net/publication/355504590_Hydrogen_refueling_station_cost_
model_applied_to_five_real_case_studies_for_fuel_cell_buses, doi:10.1051/e3sconf/202131207010.
[107] Don Quichote. Don quichote - hydrogen out of wind turbine energy. URL:
https://web.archive.org/web/20220305103410/http://www.don-quichote.eu/[last accessed 2022-3-29].
[108] Air Liquide. Hydrogen solution for material handling vehicles, August 2017. URL:
https://energies.airliquide.com/sites/abt_ne/files/2017/08/
07/h2-station-forklift_a5_brochure_en_08.17_sd.pdf [last accessed 2022-5-6].
[109] European Comission. Remote area energy supply with multiple options for integrated hydrogen-based technologies. URL: https://cordis.europa.eu/project/id/
779541[last accessed 2022-4-28].
[110] Paolo Marocco et al. Remote area energy supply with multiple options for inte-grated hydrogen-based technologies - deliverable number 2.2: Technical spec-ification of the technological demonstrators, February 2018. URL: https:
//ec.europa.eu/research/participants/documents/downloadPublic?
documentIds=080166e5c3fb71d9&appId=PPGMS[last accessed 2022-4-29].
[111] Wikimapia. Colruyt group - dassenveld site. URL: http://wikimapia.org/
16310169/Colruyt-Group-Dassenveld-Site#/photo/3565182 [last accessed 2022-3-29].
[112] Ludvik Viktorsson, Jukka Taneli Heinonen, Jon Bjorn Skulason, and Runar Unnthorsson.
A step towards the hydrogen economy—a life cycle cost analysis of a hydrogen refueling station. Energies, 10(6), 2017. URL:https://www.mdpi.com/1996-1073/10/6/
763,doi:10.3390/en10060763.
[113] HyBalance. Turning low-priced electricity from wind turbines into green hydrogen, July 2018. URL: https://hybalance.eu/wp-content/uploads/2018/07/
HyBalance-presentation-july-2018.pdf[last accessed 2022-3-29].
[114] HyBalance. Green energy project denmark. URL:https://hybalance.eu/[last ac-cessed 2022-3-29].
[115] HyBalance. From wind power to green hydrogen, September 2020. URL:
https://hybalance.eu/wp-content/uploads/2020/10/HyBalance_
Brochure_Sep2020_Final.pdf[last accessed 2022-4-2].
[116] HyBalance. Final technical performance report, June 2021. URL: https:
//hybalance.eu/wp-content/uploads/2021/12/HyBalance-D7.5-Final-Technical-Performance-Report.pdf[last accessed 2022-4-2].
[117] Cummins. Hydrogen: The next generation discover cummins electrolyser technolo-gies, June 2021. URL: https://www.cummins.com/sites/default/files/
2021-08/cummins-hydrogen-generation-brochure-20210603.pdf [last ac-cessed 2022-4-21].
[118] Cummins. Hylyzer® water electrolyzers, 2021. URL:https://mart.cummins.com/
imagelibrary/data/assetfiles/0070332.pdf[last accessed 2022-4-21].
[119] Maider Santos Eduardo García and Valerio Mariani. Protocols for demonstration of mini-grid strategy, September 2020. URL: https://www.haeolus.eu/wp-content/
uploads/2020/09/D8.2.pdf[last accessed 2022-3-28].
[120] André Rodrigues de Oliveira, José Villar Collado, João Tomé Saraiva, Salvador Doménech, and Fco. Alberto Campos. Electricity cost of green hydrogen generation in the iberian electricity market. In 2021 IEEE Madrid PowerTech, pages 1–6, Madrid, Spain, 2021.
doi:10.1109/PowerTech46648.2021.9494942.
[121] Pablo Benalcazar and Aleksandra Komorowska. Prospects of green hydrogen in poland: A techno-economic analysis using a monte carlo approach.International Journal of Hydrogen Energy, 47(9):5779–5796, 2022. doi:10.1016/j.ijhydene.2021.12.001.
[122] Javier de la Cruz-Soto, Irati Azkona-Bedia, Nicolas Velazquez-Limon, and Tatiana Romero-Castanon. A techno-economic study for a hydrogen storage system in a micro-grid located in baja california, mexico. levelized cost of energy for power to gas to power scenarios. International Journal of Hydrogen Energy, 47(70):30050–30061, 2022. XXI International Meeting of the Mexican Hydrogen Society. doi:10.1016/j.ijhydene.
2022.03.026.
[123] David Jure Jovan and Gregor Dolanc. Can green hydrogen production be economically viable under current market conditions. Energies, 13(24):6599, 2020. doi:10.3390/
en13246599.
[124] Mario Petrollese, Giulia Concas, Francesco Lonis, and Daniele Cocco. Techno-economic assessment of green hydrogen valley providing multiple end-users. International Journal of Hydrogen Energy, 47(57):24121–24135, 2022. Hydrogen Society. doi:10.1016/j.
ijhydene.2022.04.210.
[125] Petronilla Fragiacomo and Matteo Genovese. Technical-economic analysis of a hydro-gen production facility for power-to-gas and hydrohydro-gen mobility under different renew-able sources in southern italy. Energy Conversion and Management, 223:113332, 2020.
doi:10.1016/j.enconman.2020.113332.
[126] G. Matute, J.M. Yusta, J. Beyza, and L.C. Correas. Multi-state techno-economic model for optimal dispatch of grid connected hydrogen electrolysis systems operating under dynamic conditions. International Journal of Hydrogen Energy, 46(2):1449–1460, 2021. doi:
10.1016/j.ijhydene.2020.10.019.
[127] Luís Manuel Rodrigues, Tiago Soares, Igor Rezende, João Paulo Fontoura, and Vladimiro Miranda. Economic analysis of a hydrogen power plant in the portuguese electricity market.
Energies, 16(3), 2023. URL: https://www.mdpi.com/1996-1073/16/3/1506, doi:10.3390/en16031506.
[128] Yi-Peng Xu, Run-Hao Liu, Lu-Yuan Tang, Hao Wu, and Chen She. Risk-averse multi-objective optimization of multi-energy microgrids integrated with power-to-hydrogen technology, electric vehicles and data center under a hybrid robust-stochastic technique. Sustainable Cities and Society, 79:103699, 2022. URL: https:
//www.sciencedirect.com/science/article/pii/S2210670722000257, doi:https://doi.org/10.1016/j.scs.2022.103699.
[129] Miguel Carrion and José M. Arroyo. A computationally efficient mixed-integer linear for-mulation for the thermal unit commitment problem.IEEE Transactions on Power Systems, 21(3):1371–1378, 2006.doi:10.1109/TPWRS.2006.876672.
[130] Tiago Soares, Marco Silva, Tiago Sousa, Hugo Morais, and Zita Vale. Energy and reserve under distributed energy resources management—day-ahead, hour-ahead and real-time.
Energies, 10(11), 2017. URL: https://www.mdpi.com/1996-1073/10/11/1778, doi:10.3390/en10111778.
[131] Sunfire. Sunfire-hylink alkaline - technical data. URL: https://www.sunfire.
de/files/sunfire/images/content/Sunfire.de%20(neu)/Sunfire-Factsheet-HyLink-Alkaline_20220520.pdf[last accessed 2022-8-26].
[132] Enrique González-Rivera, Pablo García-Triviño, Raúl Sarrias-Mena, Juan P. Torreglosa, Francisco Jurado, and Luis M. Fernández-Ramírez. Model predictive control-based opti-mized operation of a hybrid charging station for electric vehicles. IEEE Access, 9:115766–
115776, 2021. doi:10.1109/ACCESS.2021.3106145.
[133] Deloitte. Fueling the future of mobility: hydrogen electrolyzers - hydrogen articles collection, January 2021. URL:https://www2.deloitte.fr/formulaire/pdf/
fueling-the-future-of-mobility-hydrogen-electrolyzers.pdf[last ac-cessed 2022-6-21].
[134] Jachin Gorre, Fabian Ruoss, Hannu Karjunen, Johannes Schaffert, and Tero Tynjälä.
Cost benefits of optimizing hydrogen storage and methanation capacities for power-to-gas plants in dynamic operation. Applied Energy, 257:113967, 2020. URL: https:
//www.sciencedirect.com/science/article/pii/S030626191931654X, doi:https://doi.org/10.1016/j.apenergy.2019.113967.
[135] Scottish Government. Scottish offshore wind to green hydrogen opportunity assessment, December 2020. URL: https://www.gov.scot/binaries/
content/documents/govscot/publications/research-and-analysis/
2020/12/scottish-offshore-wind-green-hydrogen-opportunity- assessment2/documents/scottish-offshore-wind-green-hydrogen- opportunity-assessment/scottish-offshore-wind-green-hydrogen- opportunity-assessment/govscot%3Adocument/scottish-offshore-wind-green-hydrogen-opportunity-assessment.pdf [last accessed 2022-7-28].
[136] Adam Christensen. Assessment of hydrogen production costs from electroly-sis: United states and europe, June 2020. URL: https://theicct.org/wp-content/uploads/2021/06/final_icct2020_assessment_of-_hydrogen_
production_costs-v2.pdf[last accessed 2022-6-24].
[137] Tiago José Rosário Lucas. Feasibility of wind energy for hydrogen produc-tion: the windfloat atlantic case-study. Master’s thesis, Instituto Superior Técnico, Lisboa, 2021. URL: https://fenix.tecnico.ulisboa.pt/downloadFile/
1126295043838523/Thesis_Tiago_84351.pdf.
[138] José Baptista, Paulo Vargas, and J.R. Ferreira. A techno-economic analysis of floating pho-tovoltaic systems, for southern european countries. Renewable Energy and Power Quality Journal, 19:57–62, 09 2021. doi:10.24084/repqj19.214.
[139] EPortugal. Corporate income tax (irc) in portugal. URL: https://eportugal.
gov.pt/en/cidadaos-europeus-viajar-viver-e-fazer-negocios-em-portugal/impostos-para-atividades-economicas-em-portugal/
imposto-sobre-o-rendimento-das-pessoas-coletivas-irc-em-portugal[last accessed 2022-7-13].
[140] Banco de Portugal. Interest rates and amounts of new loans and deposits: statistical press release – january 2022. URL:https://bpstat.bportugal.pt/conteudos/
noticias/1569/[last accessed 2022-7-11].
[141] Munzer Ebaid, Mahmoud Hammad, and Talal Alghamdi. Thermo economic analysis of pv and hydrogen gas turbine hybrid power plant of 100 mw power output. International Journal of Hydrogen Energy, 40, 08 2015. doi:10.1016/j.ijhydene.2015.07.
077.
[142] Bruno André da Costa Coelho. Study of a hybrid concentrating solar power plant for portuguese conditions. Master’s thesis, Faculdade de Engenharia da Universidade do Porto, Porto, 2014. URL: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&
source=web&cd=&ved=2ahUKEwjP3pnDx8_7AhW8TKQEHaROA04QFnoECBgQAQ&
url=https%3A%2F%2Fsigarra.up.pt%2Ffep%2Fpt%2Fpub_geral.show_
file%3Fpi_doc_id%3D26531&usg=AOvVaw3o4ImA1kWoqL6fedIBmRJT.
[143] Capstone. C600s capstone microturbine. URL:https://www.pureworldenergy.
com/technology/capstone-products/c600s-capstone-microturbine/
[last accessed 2022-11-11].
[144] Capstone. Capstone green energy corporation (nasdaq:cgrn) outlines its ongo-ing hydrogen development program and pursuit of external fundongo-ing opportunities,