The Japanese government, for the first time, is using state funds for decontamination work in areas affected by the 2011 nuclear accident in Fukushima Prefecture.
The environment ministry earmarked roughly 30 billion yen, or about 250 million dollars, in the fiscal 2017 budget plan, which was approved by the Cabinet on Thursday.
The allocation will be for cleaning up no-entry areas where radiation levels remain prohibitively high.
The government has so far made the plant operator, Tokyo Electric Power Company, pay for the cleanup, based on the principle that the entity responsible for the contamination should bear the cost.
Some lawmakers within the governing coalition are opposed to the turnaround in policy, saying the government should continue to make TEPCO pay.
Environment minister Koichi Yamamoto told reporters on Thursday that the ministry will carefully explain the decision in an effort to seek public understanding on the use of state funds.
The Environment Ministry says it estimates the cost of decontamination work carried out by TEPCO so far at around 36 billion dollars.
But the cleanup of the heavily-contaminated areas that starts from fiscal 2017 is expected to be more time- and labor-consuming than the work in lesser tainted areas.