The method used by this program relies on the system conditions to determine the uses. The system conditions can be peak load or average for a time period, or any balance the provider wants to use. The flows in the transmission lines are the resultant of the Generators on line, the amount of generation, load center locations on the network, the amount of load and the transmission line network. Each transmission line flow has a direction. The sum of all inputs to a bus equals the sum of all outputs. Once the uses are determined the costs, miles, losses, or revenue requirements can be allocated. The system example allows one to visualize the concepts on which this program is based. It has six busses, eight transmission lines, four load centers and three generators. The load center loads total 300 megawatts and is a peak condition. The generators generate 302.12 megawatts of power to have the system be in balance because of line losses. At bus Henry, it is easy to see the uses by the flows. The local generator is the only input to the bus. The load center and the two lines are the outputs. If added algebraically, the flows add to zero. The load at Henry does not use any transmission lines, only the bus facilities and the local generator. The two lines and the load are served by the generation at Henry. For this snap shot of the system, the Load Center at Henry should not have to pay for transmission lines, generators or substation busses not used. It is important to give direct and proper market signals to both load centers and generators. Both should participate in the transmission access charges and loss allocations. Only the facilities used by a load center or a generator should be charged to that user.

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The previous basic fundamentals and simple visualizations, when applied in a consistent and systematic way throughout the whole power system network, defines a computer program which will resolve the following questions:

Which Generators use each line and substation bus? Which Generators serve each load center? Which Load Centers use each line and substation bus? Which Load Centers use each Generator? Which Generators and Load Centers use each line? Who causes the system losses and how to allocate them to uses? Who causes system congestion and system additions and how are they allocated to uses?

The electric transmission system's parameters can be allocated based upon uses of generators and load centers. Each element of the system: generators, substation buses, transmission lines and transformers can all be apportioned by use. Better market driven tariffs, rates, charges and conditions can be developed by using the output data from this program. The electric utility industry and transmission system regulators will now be able to tie charges to customers [generators or load centers] based on their impact on the system.

The products of this program are shown the Example Outputs Section.