fukushima units were in early 1970s time frame, and many here as well, the design doesn't sit pat. there are many upgrades and improvements, both required by the nuclear regulatory commission and as implemented by the plant owners, to modify the design, to strengthen it it, to improve its safety and reliability, and so it doesn't resemble the same design that went in in 1970. >> a number of people that i've spoken to over the last few days have made the point these rrnls are performing in excess of 100% capacity. is that dangerous? >> no, sir, the capacity factor is a measure of how much power can put out if it was working all the time. the average capacity factor for our industry, on average, since about 2000, is around 90%. the best reactors, even with a fueling outage, we calculate this on a three-year rolling