Refinery Efficiency Modifier: % Refining: Refinery Efficiency: Ore Processing: Refinery Base Yield: Gross Efficiency: Equipment Penalty: Standings: Net Efficiency: This calculator is no longer accurate due to the recent changes made to refinery efficiency in Rubicon The Refinery Efficiency calculator will return your gross and net efficiency as a percentage. The gross efficiency is your skill-based efficiency added to the refinery base yield. The net efficiency is a fraction of your gross efficiency based on your standings and the equipment penalty (the hard limit on POS refineries). If the gross efficiency is greater than 100%, we use 100%. The net efficiency is your true efficiency. Ore Processing skills are the ore specific skills. Setting this to 0 will return the same refining efficiency percentage as the in-game reprocessor. Refinery base yield can be found on the reprocessing panel in the top right corner. Starbase refineries have a base yield of 0.5. Typical equipment penalties are 0.35 for a Refining Array and 0.75 for an Intensive Refining Array. Stations have no penalty (1.0).