Section I: Bioenergy Conversion and Utilisation Technologies<br>1. Biomass resources classification and pretreatment technologies<br> Contributors: Kehinde Oladoke Olatunji, Daniel Madyira, Anna Kożuch<br>2. Physicochemical conversion technologies<br> Contributors: Temima Ajanovic, paola bernardo, Shuyao Wang, Omojola Awogbemi, Usama Saed, ANKA Trajkovska Petkoska, Juliana Heloisa Pinê Américo-Pinheiro, Nida Zahra Syed, Ayodeji AKERELE, Daramy Kallon<br>3. Biotechnological conversion technologies<br> Contributors: Narcisa Smječanin, Esma Karahmet Farhat , Dušan Čulum, Mirza Nuhanović, Ayesha Zafar<br>4. Thermochemical conversion technologies<br> Contributors: Mika Sillanpaa, Indira Tashmukhanbetova, Dan Egesa, Magdalena Joka Yildiz, Nadja Horo, Elena Romanovskaia, Asmaa BENETTAYEB, M. Consuelo Alvarez-Galvan, Farooq Sher, Antonia Infantes-Molina<br>Section II: Solar Energy Technologies and Systems<br>5. Active and passive solar energy technologies<br> Contributors: Hanumant Jagtap, Ravinder Kumar, Anand Bewoor, Jaroslav Frantik, Jeet Prakash Sharma, Dr Nitin Gupta, Jan Najser, HEERAMAN JATOTH<br>6. Concentrating and non-concentrating solar energy technologies<br> Contributors: Saman Hameed, Carolina Piña, Anurag Sharma, Vanja Asanovic, Leijiao Ge, Ahmed Ibrahim, Petru Adrian Cotfas, Alissar Yehya, Daniel Tudor Cotfas<br>7. Solar photovoltaic energy technologies<br> Contributors: Farooq Sher, Zlata Ibrišimović Subašić, Edisa Papraćanin<br>8. Solar energy storage technologies<br> Contributors: Mohd Ghazali, Farzaneh Ghasemzadeh, Gholamhassan Najafi, Mostafa Esmaeili Shayan<br>Section III: Wind Energy Technologies and Infrastructures<br>9. Wind turbine technologies<br> Contributors: Farooq Sher, George Xydis, Henda Zorgani Agrebi, Hifza Zafar, Kristina Marintseva, Jerome Gacu, Bukurije Hoxha, Noha Mostafa, Emir Bakunić, Eduardo Menezes<br>10. Wind farms design and operational technologies<br> Contributors: Lei Zhou, Hongfu Zhang, Jiahao Wen<br>11. Wind energy storage technologies<br> Contributors: Monjur Mourshed, Shajjadur Rahman Shajid, Md Golam kibria, Md. Ahmed, Humayun Kabir Jim<br>Section IV: Hydrogen Energy Technologies and Systems<br>12. Biochemical hydrogen production technologies<br> Contributors: Eman Abdelfattah<br>13. Electrochemical hydrogen production technologies<br> Contributors: Abdinejad Abdinejad, Abdelqader El Guerraf, El Bazzaoui, Mohammed Bazzaoui, Alexandra Portoaca, Ghulam Abbas, Mohamed AQIL<br>14. Photocatalytic hydrogen production technologies<br> Contributors: MARISOL FARALDOS, Farooq Sher, Natalia Łukasik, M. Consuelo Alvarez-Galvan, Qudoos Yousuf, Temima Ajanovic, Arjan Korpa, Mariam Ameen<br>15. Hydrogen fuel cell technologies<br> Contributors: Jaroslav Frantik, Iliya Iliev, Hristo Beloev, Aveek Gupta, Jan Najser, Vojtech Blazek, Dr Nitin Gupta, Ravinder Kumar<br>16. Hydrogen storage technologies<br> Contributors: Muhammad kashif Khan, Marcin Khzouz, Lisandra Rocha Meneses, Temima Ajanovic, fatima zafar, Tazien Rashid<br>Section V: Hydropower, Marine, and Geothermal Energy Technologies<br>17. Hydropower technologies<br> Contributors: YEW HENG TEOH, Pakeeza Waheed, Izma Tanveer, Begum Erten, Haseeb Yaqoob, Mr Zulqarnain<br>18. Marine energy technologies<br> Contributors: Farooq Sher, Arlinda Bresa, Izma Tanveer<br>19. Geothermal energy technologies<br> Contributors: Wenbo Huang, Qingshan Ma, Ana nd, Ang Li, Fangming Jiang, Juanwen Chen<br>Section VI: Social, Economic, and Environmental Impacts of Renewable Energy<br>20. Social, economic and environmental impacts of renewable energy technologies<br> Contributors: Yoshihiro Hamaguchi, Maria Alzira Pimenta Dinis, roquyya khatoon, Liviu Catalin Andrei, Elif Danisman, Alexander Chupin, Narcisa Smječanin<br>21. Policy and regulatory frameworks for renewable energy technologies development and integration<br> Contributors: Temima Ajanovic, Jana Chovancová, Daniel Balsalobre-Lorente, Alexander Cruz, Piyya Muhammad Rafi-ul-Shan, Olena Melnyk, Penpim Phuangsuwan<br>Section VII: Digitalisation and Artificial Intelligence in Renewable Energy<br>22. Design and digitalisation of renewable energy technologies and infrastructures<br> Contributors: Hala Nassereddine, Qudoos Yousuf, Ghazouani Hiba, Olena Borysiak, Nadja Horo, Majlinda Daci Ajvazi, Mudddasar Safdar, Miguel Angel Pans Castillo, Irfan Ul Hai, Sladjana Starcevic<br>23. Artificial intelligence in renewable energy technologies and sustainable transition<br> Contributors: Farooq Sher, Nicolas Clauser, Madjid Soltani, M Veronica Sofianos, Ljubinka Vasic, Bilal Fareed