Riverstone, which counts former BP chief Lord Browne among its partners, last month launched Riverstone Energy after attracting £760m at its IPO.
The listed vehicle seeks to grow capital over the longer term through investments in the global energy space, and yesterday it made a $100m commitment to newly-formed oil and gas company Liberty Resources II, which will look to exploit “largely undeveloped” resource opportunities, most likely in Colorado’s DJ Basin, an area rich in oil and natural gas, and Montana’s Powder River Basin, which is known for its coal.
In the past, Riverstone and Liberty II teamed up to form Liberty Resources, an oil and gas company focused on Balkan shale.