Current energy collection unit

A current energy collector unit comprising:

• an enclosure comprising an outer wall and an inner wall, the inner wall comprising:
• a first inner wall portion that defines a load compartment, and
• a second inner wall portion that is continuous with and downstream of the first inner wall portion and defines a working compartment, wherein:
• the first inner wall portion is inwardly tapered from an upstream end of the inner wall to the second inner wall portion, and
• the second inner wall portion is cylindrical;
• and
• a turbine, an entirety of which is located in the working compartment defined by the cylindrical second inner wall portion, the turbine comprising:
• a hub, and
• a plurality of blades that extend from the hub and that, when the turbine is viewed in an axial direction from an upstream side, collectively cover an entirety of a circular area defined by outer edges of the blades.