Tokyo Electric Power Co. is refusing to reimburse the Environment Ministry for more than ¥30 billion that was spent to decontaminate land hit by radioactive fallout from the Fukushima No. 1 nuclear plant, the ministry said Tuesday.

Under the special decontamination law adopted in August 2011, the state is responsible for leading and initially financing the decontamination effort, but it can ask Tepco, responsible for the Fukushima crisis, to pay the bill later.

Tepco has paid ¥6.7 billion so far, while the Environment Ministry has sought ¥40.4 billion.