FACTBOX - French power group EDF's main international assets

PARIS (Reuters) - France's EDF could unveil a 12 billion pound bid for British Energy before the end of the week, according to industry sources, marking a key step in the power group's plans to expand abroad.

Europe's biggest utility by market capitalisation has named Britain, Spain and Belgium as key targets of expansion.

Following is a summary of EDF's main businesses outside of France. International activities generated 46 percent of the state-controlled group's total revenues in 2007.

BRITAIN

EDF Energy is a wholly owned subsidiary, which serves 5.5 million retail customers in southeast England and Greater London. EDF Chief Executive Pierre Gadonneix has said he wants to develop four new-generation nuclear power plants in Britain.

EDF made a quarter of its total 2007 sales in Britain.

GERMANY

EDF has a 45 percent stake in Energie Baden-Wuerttemberg (EnBW), the country's third-largest energy provider.

Earlier this month, EnBW agreed to buy a quarter of its peer EWE for 2 billion euros (1.6 billion pounds) in the biggest asset sale in the sector in Germany in five years.