The complicating factor with this is that there are a number of different facilities or a number of different units to this. Solar panels have a lifespan, and I can't pick the specifics out, but I believe it's somewhere in the neighbourhood of 20-plus years. For the energy system centre itself, with maintenance, the tanks will last a long period of time because they were well built. The same is true for the energy field and its handling units. I think the biggest risk from our perspective, or the component that will likely have to be replaced first, is the solar panels, which will have to be maintained as they wear out.
On March 12th, 2009. See this statement in context.