CHSB2025 continues the annual benchmarking initiative carried out through a partnership between the Cornell University Center for Hospitality Research, participating hotels, Greenview, and an industry advisory group. CHSB2025 reinforces its role as the industry's most robust and transparent benchmark for energy, water, and carbon performance in the hospitality sector.

This report documents the methodology used to compile and standardize environmental performance data from hotel properties worldwide for the 2023 calendar year. The 2023 dataset saw a 16.0-percent increase in the number of hotels participating. There was a 34.1-percent increase in valid output, with 27,219 hotels contributing to the final global dataset.

To enhance data completeness, CHSB2025 marks the first attempt to analyze and disclose a new waste index, which introduces benchmarks for seven waste metrics. However, with a relatively limited data pool of 9,800 waste submissions, only about 4,500 records passed validation and were usable for benchmarking purposes.