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v3.22.2.2

Organization and Operations (Details) $ / shares in Units, $ in Thousands |  |  |  | 9 Months Ended
--- | --- | --- | --- | ---
Jul. 07, 2022 shares | Nov. 01, 2021 USD ($) $ / shares shares | Dec. 27, 2020 USD ($) shares | Jun. 30, 2022 segment $ / shares shares
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Number of operating segments | segment |  |  |  | 1
Number of reportable segments | segment |  |  |  | 1
Class A common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Par value, Class A common stock (in usd per share) | $ / shares |  | $ 0.00001 |  | $ 0.00001
Class B-1 common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Par value, Class A common stock (in usd per share) | $ / shares |  |  |  | $ 0.00001
IPO | Class A common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Shares sold in offering (in shares) |  | 35,650,000 |  |
Public offering price per share (in usd per share) | $ / shares |  | $ 28.00 |  |
Aggregate net proceeds from stock offering | $ |  | $ 935,800 |  |
Over-Allotment Option | Class A common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Shares sold in offering (in shares) |  | 4,650,000 |  |
Redemption | Class A common stock | Subsequent Event |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Shares sold in offering (in shares) | 58,586,695 |  |  |
Fluence Energy, LLC |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  | 54,143,275 |  |
Fluence Energy, LLC percentage owned |  | 31.60% |  | 66.08%
Founders percentage owned |  | 68.40% |  | 33.92%
Fluence Energy, LLC | Founders |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  | 117,173,390 |  |
Fluence Energy, LLC | Siemens Industry |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  |  |  | 58,586,695
Investment owned percentage |  |  |  | 66.08%
Fluence Energy, LLC | Siemens Industry | Class A common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  |  |  | 58,586,695
Fluence Energy, Inc | Founders | Class B-1 common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  | 117,173,390 |  |
Fluence Energy, Inc | Third Party Investor |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned percentage |  | 65.80% |  |
Fluence Energy, Inc | Third Party Investor | Class A common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  | 35,650,000 |  |
Fluence Energy, Inc | Qatar Holding LLC |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned percentage |  | 34.20% |  |
Fluence Energy, Inc | Siemens Industry | Class A common stock |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment owned (in shares) |  |  |  | 18,493,275
QIA Florence Holdings LLC (QFH) |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |
Investment amount | $ |  |  | $ 125,000 |
Class B units issued (in shares) |  |  | 18,493,275 |

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