Basalt Infrastructure Partners, an investment advisor, completed the acquisition of Xpress Natural Gas, a provider of an alternative energy source for businesses without access to a gas pipeline. Financial terms were not disclosed. “XNG’s significant growth in the C&I, Utility and Virtual Pipeline markets has only been constrained by its access to capital. Basalt and Basalt III together bring the market knowledge, operational experience and financial backing necessary to meet our ever evolving and growing customer demand,” John Nahill, XNG CEO.