Complex sentence: In 2003 EDF subsidiary enXCo bought the interests of Wind Prospect in the project, the project became a joint venture between Elsam and EDF Energies Nouvelles in 2004 with Elsam taking 50% of the projecty.
Split into simpler sentences: In 2003 EDF subsidiary enXCo bought the interests of Wind Prospect in the project. In 2004 the project became a joint venture between Elsam and EDF Energies Nouvelles with Elsam taking 50% of the projecty.