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HOMER Grid 1.4

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Generation Rate

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In deregulated markets, customers have an option to choose the generation utility separately from the distribution and transmission utility. An example is Pacific Gas and Electric in California. A customer could have PG&E as the distribution and generation utility but use one of the community choice energy utilities as the generation utility. Here is the list of generation options available for PG&E clients:

If the tariff you have chosen is a rider/part tariff, i.e. it covers only the transmission and distribution part of the utility bill charges, then this is how the tariff will look like in your homer grid model:


You would be asked to input a generation rate. You have two options to create a complete tariff involving both generation and T&D charges:

Option 1: Enter a flat Generation rate ($/kWh) for the second utility

If you choose this option, then you can just enter your flat consumption rate in the input box highlighted in red above.

Option 2: Create/Find the Generation tariff json and combine it with the T&D tariff

If you find option 1 an oversimplification, then you could either:

(1) Find the generation tariff in our Genability database if you know the name of your second utility. You will then need to export the two tariffs and combine them using our Combine Tariffs feature.


(2) Create the generation tariff using the Advanced Tariff Builder if you have the rates pdf released by the generation utility and combine it with this current tariff using our Combine Tariffs feature.


For both these actions, you will need to use the export button to export the tariff json before combining: (on the bottom right of the tariff loaded in your model)



Once you have exported the Genability tariff json, and built a second tariff json using the Advanced Tariff Builder, then you can combine them using the Combine Tariff Option:


Since you now have both the Generation Charges and the T&D charges, you should select "Yes" for the question - "Does the combined tariff represent the full cost of buying electricity?"


Please contact support@homerenergy for any questions/help on this.


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