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Risk Management Activities and Derivative Transactions Risk Management Activities and Derivative Transactions - Counterparty Credit Risk (Details) | Sep. 30, 2015 USD ($) Megawatts Customers merchants | Apr. 14, 2015 Megawatts | Sep. 30, 2014 Customers
--- | --- | --- | ---
Derivative |  |  |
Counterparty credit rating outlier | $ | $ 1 |  |
Number of active future commission merchants | merchants | 2 |  |
Megawatts |  | 700 |
Credit of Customers |  |  |
Derivative |  |  |
Number of customers that represent the percent of outstanding accounts receivable | Customers | 3 |  | 3
Percent of total outstanding accounts receivables by customers | 27.00% |  | 27.00%
Power Purchase Agreement |  |  |
Derivative |  |  |
Megawatts | 440 |  |

X
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- Definition Megawatts of summer net capability + References No definition available. + Details
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- Definition Number of active future commission merchants to clear commodity contracts. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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