A renewable energy source.

Able to be sustained. / Able to be produced or sustained for an indefinite period without damaging the environment, or without depleting a resource; renewable.

(ecology) A means of configuring civilization and human activity so that society, its members and its economies are able to meet their needs and express their greatest potential in the present, while preserving biodiversity and natural ecosystems, planning and acting for the ability to maintain these necessary resources for future generations.

In a sustainable manner.

The act of sustaining something.

plural of sustainability

plural of sustainment

A person or thing that sustains. / (aeronautics) A rocket engine that remains with a spacecraft during its ascent after the separation of the booster engines.

plural of sustainer

plural of sustainable