EROEI [energy returned on energy invested, or net energy] is to a civilization what gross profit is to a business, the source of the surplus that supports the entire enterprise.
![EROEI [energy returned on energy invested, or net energy] is to a Image](https://www.idlehearts.com/images/eroei-energy-returned-on-energy-invested-or-net-energy-is-to-a.jpg?x85372 "EROEI [energy returned on energy invested, or net energy] is to a")
EROEI [energy returned on energy invested, or net energy] is to a
EROEI [energy returned on energy invested, or net energy] is to a civilization what gross profit is to a business, the source of the surplus that supports the entire enterprise.
