The only FESS designed to slow discharge all stored energy over a wide range of time; from a few seconds to several days! The TSI FESS is the answer to the complete eradication of chemical batteries!

Flywheel Energy Storage Systems

FESS vary greatly among the many manufacturers today. However one characteristic has remained the same with all other manufacturers their discharge rates are measured in seconds not hours.


The TSI FESS acts very much like a battery; however it does not contain harsh chemicals or acids. AND unlike all chemical batteries including Li Ion; 100% of the stored energy in the TSI FESS is USABLE ENERGY!

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