That report is interesting, but incomplete. Certainly there are diminishing returns on developing that last 80%. It's entirely possible that many of the locat

That report is interesting, but incomplete. Certainly there are diminishing returns on developing that last 80%. It's entirely possible that many of the locations are outright uneconomical to develop, possibly because they are hundreds of miles from the nearest significant civilization and would require enormous high voltage lines before they could be developed. Or maybe upstream of the location is a lot of people who would need to move first.