Amandla ombane asezantsi i-DOL (ukuqala ngokuthe ngqo) inqanaba lesithathu elisebenza kakuhle kakhulu i-magnetic motor synchronous motor kubaxubi kwishishini lemichiza.

Emva kweminyaka engaphezu kwemibini yokusetyenziswa ngokwenyani, izinga lokonga amandla li-11.5%.