RE:Powerline
There has been major weather delays, as you can imagine northern BC this time of year doesn't always cooperate. The Hardline they were stringing snapped so that halted everything. They Now have a new, stronger cable, and are currently working on pulling that back through, but it's slow going with the weather, and lack of daylight hours this time of year. I would guess they have 30 good weather working days left to finish it before they could light it up. So the ultimate timeline will depend on weather.
Vertical magazine had a great article about the powerline construction a couple months ago, check out their website, they keep back issues online. you'll see the type of terrain they're working in.