CVC Capital Partners is confident of getting approval for its €1.4bn ($1.4bn) acquisition of the high-voltage electricity network of Iberdrola, the Spanish power provider, despite reports that the government has been advised to block it.

The Comisión Nacional de la Energía (CNE) has reportedly recommended that the Spanish finance ministry block the deal. CVC declined to comment on the report in Spanish paper Expansión, but sources at the private equity firm said: "We are confident the government will end up approving it."