DETROIT – DTE Energy on Tuesday said it had shut down production at all nine synthetic fuel facilities it operates because of volatility in oil prices and the lack of federal legislation that would have provided the company with what it called certainty for production economics this year.

DTE Energy holds a majority interest in two of the nine synthetic fuel

production facilities and minority interests in the remaining seven

facilities. The company has produced about 8 million tons of synfuels so far in

2006.

Synthetic fuel facilities chemically change coal, including

waste and marginal coal, into a synthetic fuel as determined under

applicable Internal Revenue Service rules. The production and sale of

synthetic fuel produced at these facilities generates production tax

credits under the Internal Revenue Code.

Synthetic fuel production may resume, depending on various factors,

including a reduction in oil prices or the enactment of potential federal

legislation. DTE Energy retains production flexibility that could allow it

to make up lost production during the remainder of 2006 if the current

shutdown remains limited.