Other operating income (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Component of Operating Income [Abstract] | |||
| Demand response program income | $ 10,407 | $ 7,715 | $ 1,566 |
| Insurance income | 0 | 1,699 | 0 |
| Other revenue | 1,292 | 0 | 0 |
| Total other operating income | $ 11,699 | $ 9,413 | $ 1,566 |