Each building has 2 large fuel tanks which is where I was expecting to see a fault in the plan. I wonder how redundant the fuel supply is. If building 1 is the only one on generator power and the fuel tanks start to run low, can they easily route more fuel from another building's tanks? Just how paranoid were they with the design?
When ever there is an extended power outage at a facility like this, tankers show up. I would not be surprised if there are contracts with Suncor distribution to have a steady flow of tankers supplying fuel to the facility. There are several fuel distribution hubs throughout the DFW area that supply the local markets including two major airports.