Petróleo Brasileiro S.A. - Petrobras has started operations at a new diesel hydrotreatment unit at its REPLAN refinery in Paulínia, São Paulo. The unit is designed to produce 63,000 barrels per day of low-sulfur S-10 diesel and up to 21,000 barrels per day of jet fuel. This move is part of Petrobras' efforts to phase out higher-sulfur fuels in favor of cleaner variants, enhancing energy efficiency and reducing sulfur oxide emissions. The new unit is a key component of Petrobras' strategic plan to upgrade refining infrastructure and meet global low-carbon standards. Furthermore, the unit's ability to produce sustainable jet fuel addresses environmental concerns and supports the increasing demand in the aviation industry. The inclusion of an integral hydrogen recovery unit in the system not only complements the hydrotreater's efficiency but also aligns with Petrobras' sustainability goals. REPLAN, inaugurated in 1972, is crucial for Brazil's fuel production, holding a significant portion of the national diesel market. With a substantial investment planned for the next five years, Petrobras aims to enhance the operational performance of its refineries, contributing to the global shift towards cleaner energy. The article also suggests some better-ranked stocks in the energy sector for investors to consider, such as Flotek Industries, Epsilon Energy, and RPC, alongside Petrobras.