Environmental and waste-management services, hazardous, municipal, biomedical, MARPOL, construction, and e-waste management, plus waste-to-energy (WTE), recycling (wastewater, paper, plastic), and environmental solutions such as effluent treatment plants (ETPs), are the field Ramky Enviro Engineers Ltd (REEL), rebranded as Re Sustainability, leads as one of Asia's leading providers. Founded in 1994 in Hyderabad as part of the Ramky Group and backed by a 60% stake from KKR since 2018 (valuing the company at nearly $1 billion), it operates more than 85 locations across India, Singapore, the UAE, Qatar, Saudi Arabia, Kuwait, Oman, Tanzania, and the USA, managing over 100 million tonnes of waste. Key projects include India's largest WTE plants in Hyderabad (19.8 MW) and Delhi (24 MW), an AI-enabled material-recovery facility in Dubai, and a MARPOL waste-treatment facility in Oman, and it pioneered Plasma Gasification Vitrification Technology in India through a 2005-06 agreement with Westinghouse Corporation (now Alter NRG). Certified to ISO 9001, ISO 14001, ISO 17025 (NABL-accredited lab), and OHSAS 18001, REEL emphasizes sustainability, achieving Asia's first LEED Platinum certification for its Hyderabad precious-metals processing facility, and it resolved a 20-month World Bank debarment in 2021 through compliance improvements.