A Sam Zell-backed oil refiner and charterer of Jones Act tonnage is planning to sponsor a blank-cheque company with targets in the energy sector.

Par Pacific Holdings is planning a special purpose acquisition company (Spac) focused on forging a mergers-and-acquisitions deal with a green tint, regulatory filings show.

The Spac "would be focused on identifying an acquisition target business involved in the North American energy value chain, specifically with a focus on sustainability and energy transition themes", the Texas-based energy company wrote in a recent filing.