This paper explores the economics of environmental sustainability practices in the hospitality industry, focusing on the operational efficiency of hotels, cost-effectiveness, and return on investment (ROI), with a specific focus on the emerging market in Pakistan. Results indicate that green retrofits, including LED lighting and HVAC optimization, deliver average energy savings of 25-40 percent, payback periods of 1-5 years, and internal rate of return (IRR) of 18. Food-waste minimization systems, such as Winnow and Leanpath, have a 7:1 ROI in two years, and water recycling systems reduce consumption by 20-30 percent in less than four years. Hotels that operate sustainably worldwide show reduced operating costs by up to 30 percent and premium rates of 5-15 percent, based on customer willingness to pay higher rates in environmentally conscious hotels. The article presents a combination of comparative ROI modeling, policy SWOT analysis, and cross-regional benchmarking to assess the feasibility and scalability of green investments. By linking economic indicators to environmental performance, this research confirms that sustainability practices are not only environmentally advantageous but also economically strategic.