| Assets | — | — |
| Non-current assets | — | — |
| Property, plant and equipment | — | — |
| Manufacturing facilities | 57.22a | 59.73a |
| Supply facilities | 146.89a | 135.9a |
| Business facilities | 30.65a | 31.11a |
| Other facilities | 43.51a | 47.8a |
| Construction in progress | 19.52a | 29.86a |
| Total property, plant and equipment | 297.78a | 304.4a |
| Intangible assets | — | — |
| Other | 14.68a | 12.94a |
| Total intangible assets | 14.68a | 12.94a |
| Investments and other assets | — | — |
| Investment securities | 166.99a | 129.43a |
| Long-term loans receivable | 12.82a | 12.35a |
| Retirement benefit assets | 41.26a | 26.35a |
| Deferred tax assets | 2.43a | 2.57a |
| Other | 18.07a | 16.49a |
| Allowance for doubtful accounts | -0.08a | -0.08a |
| Total investments and other assets | 241.49a | 187.1a |
| Total non-current assets | 553.96a | 504.44a |
| Current assets | — | — |
| Cash and deposits | 29.77a | 34.01a |
| Notes and accounts receivable and contract assets | 84.41a | 87.75a |
| Lease receivables and investments in leases | 16.69a | 15.09a |
| Inventories | 30.61a | 37.55a |
| Other | 19.87a | 15.53a |
| Allowance for doubtful accounts | -0.78a | -0.86a |
| Total current assets | 180.57a | 189.08a |
| Total assets | 734.52a | 693.52a |
| Liabilities | — | — |
| Non-current liabilities | — | — |
| Bonds | 67.5a | 67.5a |
| Long-term borrowings | 60.28a | 47.96a |
| Deferred tax liabilities | 13.66a | 2.31a |
| Provision for gas holder repairs | 0.9a | 1a |
| Provision for safety measures | 21.67a | 21.63a |
| Provision for product warranties | 1.79a | 1.96a |
| Retirement benefit liability | 6.18a | 5.94a |
| Other | 12.64a | 10.56a |
| Total non-current liabilities | 184.63a | 158.87a |
| Current liabilities | — | — |
| Current portion of non-current liabilities | 5.5a | 24.31a |
| Notes and accounts payable | 35.59a | 40.4a |
| Short-term borrowings | 2.09a | 2.68a |
| Accrued income taxes | 4.06a | 15.02a |
| Other | 45.81a | 49.75a |
| Total current liabilities | 93.05a | 132.15a |
| Total liabilities | 277.67a | 291.02a |
| Net assets | — | — |
| Shareholders' equity | — | — |
| Capital stock | 33.07a | 33.07a |
| Capital surplus | 8.39a | 8.39a |
| Retained earnings | 316.41a | 295.43a |
| Treasury stock | -0.37a | -0.44a |
| Total shareholders' equity | 357.5a | 336.45a |
| Accumulated other comprehensive income | — | — |
| Valuation difference on available-for-sale securities | 65.97a | 44.07a |
| Deferred hedge gains (losses) | 2.89a | 3.18a |
| Foreign currency translation adjustment | 10.96a | 7.58a |
| Remeasurements of defined benefit plans | 19.54a | 11.21a |
| Total accumulated other comprehensive income | 99.35a | 66.05a |
| Total net assets | 456.85a | 402.5a |
| Total liabilities and net assets | 734.52a | 693.52a |