The technology stores energy in the form of heat and pressurised air, re-tasking ex-service truck engines to become zero-emission electrical power-conversion machines for putting energy into storage and recovering it from storage. The resulting system does not use diesel or any fuel. It is safe, straightforward to operate, has a lifetime of up to 25 years and can deliver turnaround efficiencies of around 70%.
eTanker can discharge at full power for up to 20 hours at less than half the cost of lithium-ion batteries and can be deployed flexibly as power and energy are scaled separately from one another. The system is portable, and does not require any specific geological conditions other than firm flat land to be sited. The system can be cycled over 10,000 times and charged and discharged from 100% to 0% and back, without suffering degradation over its 25 year life-span.