Phys.Org has the story. They have installed a series of turbines in a gravity fed city water supply line. The system will produce 200KW of electricity without impairing the operation of the pipeline.

This could be a good energy source for places that get their water from someplace that has a good elevation so they can get the required head pressure. Apparently it doesn't impede the flow too much so the electricity comes pretty cheap, aside from the installation and maintenance costs.

Bill Gill

C is not the speed of light in a vacuum.
C is the universal speed limit.