The production of electricity in 2015 in Serbia was 36.5 billion kilowatt-hours (KWh), while the final electricity consumption amounted to 35.5 billion kilowatt-hours (KWh). Most of the electricity produced comes from thermal-power plants (72.7% of all electricity) and to a lesser degree from hydroelectric-power plants (27.3%). There are 6 lignite-operated thermal-power plants with an installed power of 3,936 MW; largest of which are 1,502 MW-Nikola Tesla 1 and 1,160 MW-Nikola Tesla 2, both in Obrenovac. Total installed power of 9 hydroelectric-power plants is 2,831 MW, largest of which is Đerdap 1 with capacity of 1,026 MW. In addition to this, there are mazute and gas-operated thermal-power plants with an installed power of 353 MW. The entire production of electricity is concentrated in Elektroprivreda Srbije (EPS), public electric-utility power company.