I can comment a bit on that.
The National Energy Board has been around since 1959. It was created around pipelines. We received the responsibility for interprovincial and international power lines in 1990, in a change to the NEB Act.
Since that time, no one has chosen—at least to my knowledge—to ask the Governor in Council to designate an interprovincial power line. It would require a party to go to the Governor in Council and say, “We would like you to designate our power line, or a power line that is being proposed, as an NEB-regulated interprovincial power line.” No one has done that.