Reliance Industries' U.S. unit has bought a 21% stake in U.S.-based helium production company Wavetech Helium for $12 million, the conglomerate said on Thursday, in a move aimed at expanding its low-carbon energy segment.

WHI is a US-based helium gas exploration and production company engaged in the acquisition, exploration, and development of properties to produce helium gas from underground reservoirs.

The acquisition, according to industry sources, is seen as RIL's attempt to gain further understanding and explore potential in the helium-related segment