Tokyo Electric Power Co. on Wednesday reported a group net loss of ¥288.39 billion for the April-June quarter due to costs stemming from the catastrophe at the Fukushima No. 1 nuclear power plant, and revised downward its earnings projections for the full fiscal year.

The quarterly net loss compares with a loss of ¥571.76 billion incurred the year before, said the utility, which fell under effective government control Tuesday by receiving ¥1 trillion in public funds.

Tepco registered an operating loss of ¥108.84 billion for the first quarter of fiscal 2012, compared with a loss of ¥52.05 billion a year earlier. Revenue rose 15.6 percent to ¥1.31 trillion.