The type of Nuclear Fusion they are talking about is quite different than what ITER is working on. It's on a much smaller scale - around 50 MW, which is on the scale of a large diesel generator. The cost is also not that ground breaking - around $0.04/kWh, which is around where Natural Gas and Coal plants are.
And since this will be magnitudes cleaner than natural gas/coal, you might be able to get some "green" alternative energy subsidies from various governments, which might make it more cost effective.
