REMANUFACTURING SOLAR TURBINES Solar Turbines remanufactures turbine components and gas compressor components. Through advanced remanufacturing processes, components are returned to like-new condition. Once components have been certified, they are placed back into service, typically through an exchange program. This allows customers to exchange major components in days rather than months of downtime. The exchange equipment is tested and certified to the same performance and emission specifications, as well as implementing the latest design improvements. Solar continues to expand remanufacturing capabilities and invest in condition-based engineering, which allows for more finite determination of remaining useful life. Condition-based engineering improves reman content and extends overhaul cycles while ensuring quality at every step. Solar continues to invest in facilities around the world to expand capabilities with the goal of reducing transportation and provide a faster customer response. PROGRESS RAIL Progress Rail extends the use of existing locomotives by providing rebuild, overhaul and repower options. These modernization programs upgrade electrical and mechanical systems and other components to extend locomotive life by 10 years or more with appropriate maintenance. Repower upgrades meet or exceed current emissions standards in certain regions while improving reliability, reducing exhaust emissions and maximizing fuel economy. We also offer reconditioning or repair services for freight cars and a wide range of components, ensuring value-added returns are available for customers, reducing annual maintenance cost. When locomotives and railcars finally reach the end of their usable lives, they can be recycled for other uses through Progress Rail’s scrap management services. We also provide rail take-up and inspection services, including grading of previously used rail, which is then recycled, repurposed for other non-rail uses or relayed into track. In 2021, Progress Rail processed about 95,000 gross tons of material. 37CATERPILLAR 2021 SUSTAINABILITY REPORT