Most refiners need flexible catalyst systems that allow them to take advantage of changing economic scenarios. GENESIS® catalysts provide this flexibility to maximize yield potential though optimization of discrete cracking catalyst functionality. The key component in GENESIS is MIDAS®, which maximizes conversion of bottoms without a coke and gas penalty, while the other component is often IMPACT®, which provides critical zeolite surface area, activity, and metals tolerance. GENESIS demonstrates a true yield synergy delivering a superior coke to bottoms relationship than either component alone. GENESIS catalysts have been employed in over 20% of the world's FCCU's.