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Environmental problem has become a popular research area. Efforts are being made at an international level for creating a sustainable environment. Hospitality industry is considered to be one of the main industries of a country. It makes contributions in the development of sustainable environment. Hospitality industry is adopting environmental certifications and green hotels concept rapidly. In this research, we performed bibliometric analysis of 49 articles on the topic of importance of environmental certificates for green hotels. Results indicate that majority of the journals have articles with a large number of citations, which indicates that they are high-quality journals. The results indicate that Cornell University, Polytechnic University of Valencia, Hong Kong Polytechnic University, and George Washington University are the institutes producing high-quality research work, as 28% of the researchers cited the articles published by the researchers of these universities. Results indicate that universities of Spain and USA are the largest contributors, as they have published 52% the total articles in the area under this study. USA and Spain are considered to be the world superpowers; their interest in this area of research unveils the importance of the topic. The authors Verma, Chan, and Rivera are the core researchers of this area, as they published 20% of the overall articles discussed in this study, which makes them the gurus of the research area.

Customers are becoming more concerned about the use of green practices in the hotel industry. Managers are therefore starting to recognise the significance of green practices for clients' purchasing decisions and levels of satisfaction. This study aims to investigate how customers' decisions to book green hotels online and make purchases are impacted by green certificates. Two variables, namely the intentions to return and to pay a premium price, are used to measure customer satisfaction and purchasing behaviour towards green hotels. SmartPLS has been employed to analyse data gathered from 161 individuals from two hotels in Saudi Arabia. The results suggest that green certifications, environmental considerations, and green brand perception have a significant impact on online customers' satisfaction and purchase choices in the hotel sector. This paper provides a comprehensive framework that illustrates the connection between hotels' aspirations towards environmental concerns and customers' willingness to revisit and pay a premium price. [ABSTRACT FROM AUTHOR]