I'm not sure as to the clarity of your question. Perhaps a little illumination on my end could help.
When we did the greenhouse gas emissions comparison, it was a fair apples-to-apples comparison. We interviewed the former farm manager at length, for every detail from the generators used on site to how the feed was delivered to open-net pens. We did a very detailed assessment of every energy-consumptive point, from when smolts or feed were delivered to the farm, and from when those fish were handed off to the production.... Beyond that boundary, we got no window into how much energy they used. We assumed it would be the same for both. It was just the difference between the net-pen production and the closed containment production that we were seeking to ascertain.
While I have the floor here, I would like to be clear that the level of methane off-gassing from the net pens is currently a very unknown parameter. I know that DFO is doing a life-cycle assessment. I would like that information to be accurately assessed by the experts on that subject, because fundamentally there isn't enough public domain knowledge about that process at the moment.