MRO conducts an intensive study of its planned generation resources and transmission system adequacy to ensure it will meet its region’s electricity demand.  NERC collects these regional studies to evaluate the reliability of the interconnected grid as a whole. MRO also monitors generation trends in the region.  The generation fuel source mix is made up of fossil/coal, hydroelectric, gas/oil, nuclear, and wind/biomass.  This diverse generation mix keeps our power system reliable and economical.