The company EOE  Petrinja (Eko Otpad Energija = Eco waste energy) was began connected with croatian partner, knows locally conditions and slovak company Lake spol. s r.o., with deals with research and development new technology, designing and realization special technology units, waste water treatment, utilization geothermal  potention of water and gas from it.

EOE Petrinja is holding the licence of exclusive agency  for „fermentor EWA“  by the Czech company AGRO-EKO, by the helps of „fermentor EWA“is processing the biologically decomposable waste into the product – compos twith the possibility of energy using in form fire biomass (bio fuel).