Producer
Solar Turbines (Caterpillar)
Solar Turbines Incorporated (San Diego, CA; wholly owned subsidiary of Caterpillar Inc. since 1981) is the world's largest manufacturer of industrial gas turbine packages for pipeline compression applications. Solar's gas turbine lineup — Saturn 20, Centaur 40/50, Mercury 50, Taurus 60/70, Mars 100, Titan 130 — spans 1.2 MW to 22 MW output and forms the backbone of US natural gas transmission compression infrastructure. Solar claims approximately 15,000 gas turbine units installed globally; many large-diameter transmission pipelines (Transco, Tennessee Gas, El Paso) use Solar Turbines exclusively for compression stations, creating deep operational and spare-parts lock-in. Primary manufacturing at San Diego headquarters. Mars and Titan turbines are the workhorses of high-pressure interstate pipeline compression.
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Pipeline Compression Turbines
55%Offshore & Oil-Gas Platform Power
25%Distributed Power Generation
15%Aftermarket Parts & Service
5%
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Did you know2023
Solar Turbines' gas turbine packages simultaneously drive: the compressors that move natural gas through US interstate pipelines (natural gas supply chain); the generators that power offshore oil platforms in the Gulf of Mexico and North Sea (oil production supply chain); and the turbine drives in LNG liquefaction trains that cool natural gas to -162°C for export (LNG export supply chain). The same Solar Mars 100 turbine model is found at pipeline compressor stations maintaining gas pressure across the Transco system (supplying New England heating gas), on offshore platforms in the Gulf generating power for drilling operations, and in LNG plant machinery that exports US natural gas to Japan and South Korea. A supply chain disruption to Solar Turbines spare parts or a manufacturing disruption in San Diego would simultaneously affect US domestic gas pipeline pressure maintenance, offshore oil platform operational capability, and US LNG export capacity — three distinct critical infrastructure supply chains sharing a common hardware platform.
Solar Turbines Incorporated ↗Origin2023
Solar Turbines was founded in 1927 in San Diego as Solar Aircraft Company — an aircraft components manufacturer that, during World War II, produced aircraft parts for the US military. After the war, as the US jet age created excess gas turbine engineering talent, Solar pivoted from aircraft components to small industrial gas turbines. The critical insight was that the same thermodynamic cycles used in aircraft jet engines — axial compressor, combustion chamber, axial turbine — could be packaged for stationary industrial applications. The US postwar pipeline boom created a perfect market: thousands of compressor stations along new natural gas transmission lines needed power sources, and Solar's industrial gas turbine packages fit precisely. Solar's Mars and Titan turbines became the industry standard for large-diameter pipeline compression stations across the Transco, Tennessee Gas, and Texas Eastern systems. Caterpillar acquired Solar in 1981, adding turbine power to its diesel power equipment portfolio. A San Diego aircraft parts company that retooled after WWII now has 15,000 turbines installed globally and maintains a lock-in position on US natural gas transmission infrastructure — because replacement of installed Solar turbines with competitors' equipment requires complete station redesign.
Solar Turbines Incorporated ↗