The document outlines key performance indicators (KPIs) for measuring energy efficiency and greenhouse gas (GHG) emissions in hospitals, advocating for standardized metrics that inform performance comparisons and facilitate sustainability. It emphasizes the importance of adopting established benchmarks like the GHG Protocol and encourages transparent, quantifiable data collection to enhance hospital operations and reduce emissions. Ultimately, it serves as a guide for hospitals to evaluate their environmental impact and develop strategies for green investments.