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v3.23.2

Operations and Significant Accounting Policies (Details) - USD ($) $ in Millions | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021
Cash, Cash Equivalents and Restricted Cash [Abstract] |  |  |  |  |
Cash and Cash Equivalents |  | $ 47.9 | $ 36.4 | $ 74.6 | $ 45.1
Restricted Cash included in Prepayments and Other |  | 0.8 | 1.5 | 0.8 | 0.3
Restricted Cash included in Other Non-Current Assets |  | 2.4 | 2.3 | 6.3 | 2.3
Cash, Cash Equivalents and Restricted Cash on the Consolidated Statement of Cash Flows |  | 51.1 | 40.2 | 81.7 | 47.7
Inventories – Net [Abstract] |  |  |  |  |
Fuel | [1] | 37.7 | 33.4 |  |
Materials and Supplies |  | 122.3 | 75.1 |  |
Renewable Energy Facilities Under Development | [2] | 34.3 | 347.4 |  |
Total Inventories – Net |  | 194.3 | 455.9 |  |
Other Non-Current Assets [Abstract] |  |  |  |  |
Contract Assets | [3] | 19.7 | 21.0 |  |
Operating Lease, Right-of-Use Asset |  | 11.1 | 12.7 |  |
ALLETE Properties |  | 19.4 | 19.1 |  |
Restricted Cash, Non-Current |  | 2.4 | 2.3 | $ 6.3 | $ 2.3
Other Postretirement Benefit Plans |  | 60.4 | 58.8 |  |
Other |  | 97.3 | 90.4 |  |
Total Other Non-Current Assets |  | 210.3 | 204.3 |  |
Other Current Liabilites [Abstract] |  |  |  |  |
Customer Deposits | [4] | 9.6 | 150.7 |  |
PSAs |  | 6.0 | 6.1 |  |
Public Utilities Reserve for Interim Rates |  | 31.8 | 18.4 |  |
Manufactured Gas Plant - Current | [5] | 9.1 | 14.7 |  |
Operating Lease Liabilities |  | 3.0 | 3.2 |  |
Other |  | 53.1 | 57.9 |  |
Total Other Current Liabilities |  | 112.6 | 251.0 |  |
Other Non-Current Liabilities [Abstract] |  |  |  |  |
Asset Retirement Obligation | [6] | 203.6 | 200.4 |  |
PSAs |  | 23.9 | 26.9 |  |
Operating Lease Liabilities |  | 8.1 | 9.3 |  |
Other |  | 32.4 | 32.4 |  |
Total Other Non-Current Liabilities |  | 268.0 | 269.0 |  |
Business Segments [Line Items] |  |  |  |  |
Goodwill |  | $ 154.9 | 154.9 |  |
Goodwill, Change in Goodwill Allocation, Description |  | There have been no changes to goodwill by reportable segment |  |  |
BNI Energy [Member] |  |  |  |  |
Business Segments [Line Items] |  |  |  |  |
Other Receivables |  | $ 32.4 | $ 32.4 |  |
[1] | Fuel consists primarily of coal inventory at Minnesota Power.
[2] | Renewable Energy Facilities Under Development as of June 30, 2023 consists primarily of project costs related to renewable energy development projects at New Energy. As of December 31, 2022, it consisted primarily of project costs related to ALLETE Clean Energy’s Northern Wind and Red Barn wind projects sold in the first quarter of 2023 and second quarter of 2023, respectively. (See Other Current Liabilities.)
[3] | Contract Assets consist of payments made to customers as an incentive to execute or extend service agreements. The contract payments are being amortized over the term of the respective agreements as a reduction to revenue.
[4] | Customer Deposits as of December 31, 2022 primarily related to deposits received by ALLETE Clean Energy for the Northern Wind and Red Barn wind projects sold in the first quarter of 2023 and second quarter of 2023, respectively. (See Inventories – Net.)
[5] | The manufactured gas plant represents the current liability for remediation of a former manufactured gas plant site located in Superior, Wisconsin, and formerly operated by SWL&P.
[6] | The asset retirement obligation is primarily related to our Regulated Operations and is funded through customer rates over the life of the related assets. Additionally, BNI Energy funds its obligation through its cost-plus coal supply agreements for which BNI Energy has recorded a receivable of $32.4 million in Other Non-Current Assets on the Consolidated Balance Sheet as of June 30, 2023 ($32.4 million as of December 31, 2022).

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