a thoughtful web.
Good ideas and conversation. No ads, no tracking.   Login or Take a Tour!
comment
user-inactivated  ·  3526 days ago  ·  link  ·    ·  parent  ·  post: Portland now generating power with turbines in ordinary water pipelines

Lengthy discussion on r/futurology which I think answers your question.

Or, I'm not sure it does. I thought you were asking if the system was zero-sum because you have to use energy to get the water high up enough to generate energy when it goes down? That is addressed. But if you're actually asking about the decrease in water pressure caused by the turbines, I'm not sure. I will think about it.