Our system is a whole lot more complicated than that. I've got some direct experience in this with Powerex. In general, Powerex provides income for BC by buying power at low cost and selling at higher. BC both imports AND exports electricity, but has been a net exporter most years. I don't think we discriminate on where that electricity comes from/is produced, as long as the price we import it at is low.
Oh, I know it's complex. We are also lucky we have options, to import and export to and from at least two neighbours, and between the three of us, we have a whole variety of generation methods, which all have pros and cons, but can be used at different times to best advantage. Hawaii, Alaska and Florida are not so rich in options.
And I agree from a strictly business perspective, you should not discriminate on where you get power from. But I'm pretty sure BC Hydro would not import power from a US power plant that burns live bunny rabbits for thermal generation. That's of course an extreme example (but then again, we did send aborted babies to Oregon to power homes). But more and more British Columbians are likely uncomfortable about importing power from coal plants in Alberta (since BC bans coal plants) and gas plants in Washington (you can stick it to Trump by not buying US power). For those people, Site C is a better alternative.
Edited by VicHockeyFan, 06 June 2017 - 07:29 AM.