We did some calcs to that effect since we were operating in Australia, and they had a $25/ton carbon tax at the time. If my memory serves, it would increase nat

We did some calcs to that effect since we were operating in Australia, and they had a $25/ton carbon tax at the time. If my memory serves, it would increase natural gas costs by ~25%. So it'd likely still be right around $0.10/KWh. Actually I take that back - our calcs were all based on ~$4/mmBTU gas but I just looked and gas prices have been below $3/mmBTU for years. So $0.08/KWh is probably a worst case even if we had a reasonable carbon tax.