As a result of not needing the humidifier, compressor and radiator as in the LTPEM system, the HTPEM system is very simple. The Serenergy fuel cell system uses less than 4% for this base purpose, making this the fuel cell system with the lowest parasitic power consumption searchable. We term it The Power of Simplicity.

Partly due to the low parasitic losses we have achieved fuel cell system efficiencies of up to 57%. Most fuel cell systems have an energy usage of approximately 10-20% of the output, just to achieve operational status. The best performing LTPEM fuel cell systems have parasitic losses of 6–8%, but parasitic loss exceeding 10% are common.

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