The Chinese-built dam has a generating capacity of 84 MW, but some of its turbines are not working and the reservoir has partially silted up since it was built more than a quarter of a century ago, reducing its water volume by 23 percent.

After the rehabilitation planned by 2011, and taking account of the growth in domestic demand, Cameroon will ensure a guaranteed output of 10 MW to Chad, the statement said.

Another 25 MW would be exported to Chad from a new plant to be built by 2014 at Warak, on the Bini river, the statement said. The U.S. Trade and Development Agency paid $662,000 in 2008 for a feasibility study to build a 75 MW hydro dam at Warak.

Chad and Cameroon would contribute to the costs of both projects, the statement said but the amount was not revealed.