Atmospheric Air

Linde Engineering (part of Linde plc; NYSE/FRA: LIN; Dublin, Ireland; HQ Pullach Germany for engineering division; ~$34B revenue) designs and delivers small-scale LNG liquefaction plants using Linde's proprietary LIMUM (Linde Mixed reFrigerant Updated Modular) and other natural gas liquefaction cycles. Linde Engineering has built multiple LNG peak-shaving plants and distributed LNG liquefaction facilities in the US and Europe. Linde is one of just three technology licensors (with Air Products and Shell SEAP) that control the majority of global LNG process technology. Linde Engineering's LNG reference list includes utility peak-shaving plants in the US Northeast and Europe, and LNG satellite and virtual pipeline systems.

Chart Industries (NYSE: GTLS; Ball Ground, GA; ~$4B revenue post-Howden) is the world's dominant manufacturer of cryogenic equipment for LNG, including peak-shaving plant liquefiers, brazed aluminum heat exchangers (BAHX), cold boxes, storage tanks, and LNG vaporizers. Chart's Industrial & Commercial Energy (ICE) division is the primary vendor for utility LNG peak-shaving plant equipment in North America. Chart acquired Howden (Glasgow-based industrial compressor and fan manufacturer) in 2023 for $4.4B, adding compression technology to its cryogenic heat exchanger and storage portfolio — making Chart a near-complete LNG equipment systems integrator. Chart also produces the CAIRE/MVE biomedical cryogenic cylinders and acquired La Crosse Cooler and other brands. The La Crosse, WI cryogenic division manufactures vacuum-insulated storage vessels. Chart is the single most critical equipment supplier for US utility LNG peak-shaving — if a New England utility needs to expand or replace a peak-shaving liquefier, Chart is essentially the only qualified domestic source.

Indian industrial gas and cryogenic equipment company (BSE: 543219, HQ Vadodara Gujarat); joint venture between INOX Group India (diversified conglomerate) and Air Products & Chemicals (US, 50% stake). Operates air separation units serving Indian steel mills, petrochemical plants, and healthcare facilities. INOX India is notable for having built and operated ASUs that were critical during India's COVID-19 oxygen crisis (April-May 2021), when Indian hospitals faced severe oxygen shortages as COVID-19 infection waves overwhelmed demand — oxygen production was limited by ASU capacity and liquid oxygen transportation logistics, not by availability of atmospheric air. The INOX India experience illustrates that 'free' atmospheric air becomes a constrained supply input when ASU manufacturing and transportation infrastructure cannot scale fast enough to meet surge demand.