References

Electric utility data is available in many different places. Below are a few of the best.

Arizona Corporation Commission (ACC)

The ACC maintains a docket of its decisions:

⁠

https://edocket.azcc.gov/search⁠

⁠

It also keeps annual reports and plans:

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https://www.azcc.gov/utilities/electric/electric-annual-reports⁠

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FERC maintains a record of detailed financial and operations data:

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https://elibrary.ferc.gov/eLibrary/search⁠

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Form 1 and Form 3 are useful.

EIA also maintains electricity data.

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https://www.eia.gov/electricity/⁠

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Form EIA-861 is among the most useful:

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https://www.eia.gov/electricity/data/eia861/⁠

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You can find also find financial and other material information on publicly-traded utilities at the SEC:

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https://www.sec.gov/edgar/searchedgar/companysearch⁠

⁠

Forms 10-K, 10-Q, and 8-K are annual, quarterly, and informational reports, respectively.

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