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- Supplying Passive Houses with sustainable energy
- ic meters of wood can be cut for this purpose. No other renewable energy sources are available (in this e... ly. They are not, however, sustainable, since the other 90 houses still need fossil fuels for heating. Th... ence for individual buildings are ill advised for other reasons. Even for an only moderately efficient, f... uction relative to its treated floor area. On the other hand, even in central Europe, it is difficult for