The electric generation system is actually a remarkably apt comparison because in most districts the cost of consumables is marginal. The real cost is in the ca

The electric generation system is actually a remarkably apt comparison because in most districts the cost of consumables is marginal. The real cost is in the capital expenditure needed for the system to supply a given load. Many of the same principals apply (e.g. "why do they charge me per kWh when they're overgenerating and they have all these nuclear power plants sitting around....")