These are the new fluidised bed technology energy blocks of Narva Power Plants, where in addition to oil shale as the main fuel, biofuel can be burned in a proportion of up to 10%.
Tegemist on Narva Elektrijaamade uute keevkihttehnoloogiaga energiaplokkidega, kus saab põlevkivile kui põhikütusele lisaks põletada kuni 10% ulatuses biokütust.