減価償却費 - 社会基盤・海洋、有価証券及び投資有価証券評価損益（△は益）、特別利益合計他2件
- 【期間】
| 年度 | 減価償却費 - 社会基盤・海洋 | 有価証券及び投資有価証券評価損益（△は益） | 特別利益合計 | 商業運転中のボイラ設備に係る和解関連費用 | 減損損失 |
|---|
| 2008/03 | - | | 7.11億 | | 908億 | | - | | 3.78億 | |
| 2009/03 | - | | 8.75億 | +23.1% | 150億 | -83.5% | - | | 1.02億 | -73% |
| 2010/03 | - | | 23.4億 | +167.5% | 18.7億 | -87.5% | - | | 2.47億 | +142.2% |
| 2011/03 | - | | 26億 | +11.1% | 207億 | 大幅増 | - | | 17.8億 | +621.5% |
| 2012/03 | - | | 32.6億 | +25.1% | 221億 | +6.5% | - | | 21.8億 | +22.4% |
| 2013/03 | 60.2億 | | 24.5億 | -24.8% | 260億 | +17.6% | - | | 12.6億 | -42.3% |
| 2014/03 | 60.9億 | +1.1% | 2.11億 | -91.4% | 75億 | -71.1% | - | | 2.45億 | -80.6% |
| 2015/03 | 62.4億 | +2.6% | 13.9億 | +559.2% | - | | - | | 1.75億 | -28.6% |
| 2016/03 | 63.7億 | +2.1% | 35.4億 | +154.6% | 368億 | +390.8% | - | | 0.81億 | -53.7% |
| 2017/03 | 63.1億 | -1.1% | 8.9億 | -74.9% | 305億 | -17% | - | | 34.6億 | 大幅増 |
| 2018/03 | 60.4億 | -4.1% | 6.87億 | -22.8% | 15.9億 | -94.8% | 29.3億 | | 11億 | -68.4% |
| 2019/03 | 59.2億 | -2.1% | 5.4億 | -21.4% | 53.1億 | +234.6% | - | | 16.1億 | +47% |
| 2020/03 | 68.7億 | +16.1% | 55.4億 | +926.7% | 118億 | +122.2% | - | | 4.26億 | -73.5% |
| 2021/03 | - | | - | | 248億 | +109.9% | - | | - | |
| 2022/03 | - | | - | | 619億 | +150.3% | - | | - | |
| 2023/03 | - | | - | | 52.1億 | -91.6% | - | | - | |
