Riverstone is already a significantinvestor in global renewables – as well as in fossil-based ventures such asCuadrilla, the company searching for shale gas in the UK.

The new fund – which willinclude former BP CEO John Browne on its board – will look for investmentsacross the sectors, reports the Financial Times.

Lord Browne is a partner atRiverstone, which has positions in renewables including a stake in US-based winddeveloper Pattern Energy and – until it was bought by Japanese investors lastyear – the offshore wind installer Seajacks.

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