What is a flow resource?

A flow resource is a resource which is neither renewable nor non-renewable, and must be used where it occurs and replenishes itself.

Flow resources, such as water, wind, and sunlight, are neither renewable nor nonrenewable because they must be used as, when, and where they occur. The energy in a river can be used to generate electricity, which can be transmitted over great distances. However, that energy must be captured by turbines as the water flows past or it will be lost.

There can be more freedom for them