Rocky Mountain Institute (RMI) is an organization in the United States dedicated to research, publication, consulting, and lecturing in the general field of sustainability, with a special focus on profitable innovations for energy and resource efficiency. RMI was established in 1982 and has grown into a broad-based institution with 85 staff and an annual budget of some $13 million. RMI's work is independent and non-adversarial, with a strong emphasis on market-based solutions. The work of RMI has benefited more than 80 Fortune 500 companies in a diverse range of sectors.