Early-mid 2000's, I think. Over in or around Nelson, I believe. Either someone we visited or real estate we looked at, I recall. Super sketchy logging roads, I remember.
The deal was the people who lived near a new hydro dam got free electric because the dam was going on a river with water or access rights they owned. The people were already drawing and filtering their own mountain stream water. Someone told me the potential water flow rate from a settling pond maybe 20 feet in elevation up a mountain 'out back.' The number 90gpm sticks in my head, but that can't be right. US is around 2.2. Anyway, it was insane. Didn't think to ask what they did when the settling pond froze.