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Exploring public discourse on green hydrogen via YouTube comments: A comparative sentiment analysis using VADER and ChatGPT

Author

Listed:
  • Giganti, Patrizio
  • Errichiello, Grazia
  • Falcone, Pasquale Marcello

Abstract

This study investigates public attitudes toward green hydrogen (GH) by analyzing YouTube comments through sentiment analysis and topic modelling. Unlike previous research that situates hydrogen within broader climate or energy debates and focuses on platforms such as Twitter or Bilibili, this work examines GH as a standalone topic and leverages YouTube’s longer, context-rich comments to capture richer public discourse. Comments were collected via the YouTube API (Application Programming Interface) from a curated set of videos and analyzed for sentiment using both the rule-based VADER (Valence Aware Dictionary and sEntiment Reasoner) and the generative model ChatGPT-3.5, enabling a qualitative comparison of their performance. Latent Dirichlet Allocation (LDA) was then applied to identify major discussion themes, which were subsequently linked to sentiment trends. The results indicate that ChatGPT-3.5 outperforms VADER in interpreting sarcasm, slang, emoticons, and mixed sentiments. Topic modelling revealed eight key themes, including skepticism about institutional barriers and costs, optimism regarding GH’s role in hard-to-decarbonize sectors, comparisons with nuclear energy and electric vehicles, and concerns about environmental and technical challenges. Overall, the study enhances understanding of online public discourse on GH by demonstrating how advanced sentiment analysis tools, combined with topic modelling, can generate deeper insights to inform strategies that better integrate public perceptions with the economic and policy conditions of GH deployment.

Suggested Citation

  • Giganti, Patrizio & Errichiello, Grazia & Falcone, Pasquale Marcello, 2025. "Exploring public discourse on green hydrogen via YouTube comments: A comparative sentiment analysis using VADER and ChatGPT," Economic Analysis and Policy, Elsevier, vol. 88(C), pages 2012-2030.
    • Handle: RePEc:eee:ecanpo:v:88:y:2025:i:c:p:2012-2030
    DOI: 10.1016/j.eap.2025.11.014
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    1. Boyang Chen & Zongxiao Wu & Ruoran Zhao, 2023. "From fiction to fact: the growing role of generative AI in business and finance," Journal of Chinese Economic and Business Studies, Taylor & Francis Journals, vol. 21(4), pages 471-496, October.
    2. Blanco, Elena C. & Sánchez, Antonio & Martín, Mariano & Vega, Pastora, 2023. "Methanol and ammonia as emerging green fuels: Evaluation of a new power generation paradigm," Renewable and Sustainable Energy Reviews, Elsevier, vol. 175(C).
    3. Wild, Phillip & Skoufa, Lucas & Spencer, Nancy, 2024. "Renewable hydrogen requirements and impacts for network balancing: A Queensland case study," Economic Analysis and Policy, Elsevier, vol. 81(C), pages 452-469.
    4. Gordon, Joel A. & Balta-Ozkan, Nazmiye & Nabavi, Seyed Ali, 2022. "Homes of the future: Unpacking public perceptions to power the domestic hydrogen transition," Renewable and Sustainable Energy Reviews, Elsevier, vol. 164(C).
    5. Bogdzinski, Heidi & Sergio, Ivan & Wedemeier, Jan, 2025. "Unveiling the impact of green energy on green productivity: A focus on hydrogen and the green transition in European regions," Economic Analysis and Policy, Elsevier, vol. 86(C), pages 1064-1082.
    6. Grimmer, Justin, 2011. "An Introduction to Bayesian Inference via Variational Approximations," Political Analysis, Cambridge University Press, vol. 19(1), pages 32-47, January.
    7. Lefeng, Shi & Shengnan, Lv & Chunxiu, Liu & Yue, Zhou & Cipcigan, Liana & Acker, Thomas L., 2020. "A framework for electric vehicle power supply chain development," Utilities Policy, Elsevier, vol. 64(C).
    8. Ye, Tuo & Zhao, Songyu & Lau, Chi Keung Marco & Chau, Frankie, 2024. "Social media sentiment of hydrogen fuel cell vehicles in China: Evidence from artificial intelligence algorithms," Energy Economics, Elsevier, vol. 133(C).
    9. Ioana Iacob & M. Granger Morgan, 2023. "Public perceptions of hydrogen hubs in Southwestern Pennsylvania," Journal of Risk Research, Taylor & Francis Journals, vol. 26(11), pages 1283-1298, November.
    10. Weismayer, Christian & Gunter, Ulrich & Önder, Irem, 2021. "Temporal variability of emotions in social media posts," Technological Forecasting and Social Change, Elsevier, vol. 167(C).
    11. Steve Westlake & Conor H. D. John & Emily Cox, 2023. "Perception spillover from fracking onto public perceptions of novel energy technologies," Nature Energy, Nature, vol. 8(2), pages 149-158, February.
    12. Tran, Trang & Nong, Duy & Verikios, George & Marcos-Martinez, Ray & Lu, Yingying & Schandl, Heinz, 2025. "Newly updated nationally determined contributions: Implications for the global energy transition," Economic Analysis and Policy, Elsevier, vol. 85(C), pages 1816-1829.
    13. Giganti, Patrizio & Barra, Cristian & Falcone, Pasquale Marcello, 2025. "Unveiling the nexus of institutional quality and renewable energy utilizing a Topic Modelling approach," Renewable and Sustainable Energy Reviews, Elsevier, vol. 214(C).
    14. Han, Di & Guo, Wei & Chen, Han & Wang, Bocheng & Guo, Zikun, 2024. "LEST: Large language models and spatio-temporal data analysis for enhanced Sino-US exchange rate forecasting," International Review of Economics & Finance, Elsevier, vol. 96(PA).
    15. Min-Ki Hyun & Hong-Su Ahn & Seung-Hoon Yoo, 2024. "Which Is Preferred between Electric or Hydrogen Cars for Carbon Neutrality in the Commercial Vehicle Transportation Sector of South Korea? Implications from a Public Opinion Survey," Energies, MDPI, vol. 17(5), pages 1-16, February.
    16. Buah, Eric & Linnanen, Lassi & Wu, Huapeng, 2020. "Emotional responses to energy projects: A new method for modeling and prediction beyond self-reported emotion measure," Energy, Elsevier, vol. 190(C).
    17. Hickson, Allister & Phillips, Al & Morales, Gene, 2007. "Public perception related to a hydrogen hybrid internal combustion engine transit bus demonstration and hydrogen fuel," Energy Policy, Elsevier, vol. 35(4), pages 2249-2255, April.
    18. Jan Ole Krugmann & Jochen Hartmann, 2024. "Sentiment Analysis in the Age of Generative AI," Customer Needs and Solutions, Springer;Institute for Sustainable Innovation and Growth (iSIG), vol. 11(1), pages 1-19, December.
    19. Su, Chi Wei & Liu, Fangying & Stefea, Petru & Umar, Muhammad, 2023. "Does technology innovation help to achieve carbon neutrality?," Economic Analysis and Policy, Elsevier, vol. 78(C), pages 1-14.
    20. Susana Álvarez-Díez & J. Samuel Baixauli-Soler & Anna Kondratenko & Gabriel Lozano-Reina, 2024. "Dividend announcement and the value of sentiment analysis," Journal of Management Analytics, Taylor & Francis Journals, vol. 11(2), pages 161-181, April.
    21. Gordon, Joel A. & Balta-Ozkan, Nazmiye & Nabavi, Seyed Ali, 2023. "Socio-technical barriers to domestic hydrogen futures: Repurposing pipelines, policies, and public perceptions," Applied Energy, Elsevier, vol. 336(C).
    22. Pashchenko, Dmitry, 2024. "Green hydrogen as a power plant fuel: What is energy efficiency from production to utilization?," Renewable Energy, Elsevier, vol. 223(C).
    23. Behling, Noriko & Williams, Mark C. & Managi, Shunsuke, 2015. "Fuel cells and the hydrogen revolution: Analysis of a strategic plan in Japan," Economic Analysis and Policy, Elsevier, vol. 48(C), pages 204-221.
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    JEL classification:

    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming
    • C88 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Other Computer Software

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