Cummins (CMI) and Liberty Energy (LBRT) announced that the industry’s first natural gas variable speed, large displacement engine to power Liberty’s digiPrime hydraulic fracturing platform will be deployed in the first half of 2025. The companies entered into a strategic partnership in June 2024 to jointly develop the revolutionary technology for the completions services market. Cummins HSK78G natural gas engine was first launched in March 2019 as part of a fixed speed generator set for the power generation market. Designed to provide reliable power, regardless of the natural gas source or the operating environment, the engine reached new levels of efficiency and improved total cost of operation. The recent development effort for Liberty’s digiPrime platform leverages the already successful HSK78G platform and improves the 78 Liter natural gas spark-ignited engine’s response time and load acceptance during operation. Further savings can be found from the maintenance and servicing of the HSK78G variable speed engine. Projected data estimates an increase of four times the engine’s life to overhaul maintenance interval when compared to a standard diesel engine, keeping the units in the field and operating for longer.
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