Capable of being sustained, Able to be sustained for an indefinite period without damaging the environment, or without depleting a resource; renewable, Capable of being continued with minimal long-term effect on the environment

Relating to or being a commodity or resource, such as solar energy or firewood, that is inexhaustible or replaceable by new growth, Able to be renewed; capable of renewal, of a resource Sustainable; able to be regrown or renewed; having an ongoing or continuous source of supply; not finite, noun_ A thing that is renewable; especially, a renewable source of energy