MERRILLVILLE, Ind.--( BUSINESS WIRE )--Northern Indiana Public Service Company LLC (NIPSCO), a subsidiary of NiSource Inc. (NYSE: NI), has made a request with the Indiana Utility Regulatory Commission (IURC) to adjust its natural gas base rates. The request is largely driven by federal safety and compliance regulations, system upgrades to support economic development and job creation, and infrastructure modernization and improvements that directly benefit customers and communities – including an estimated $1.1 billion in investments through the end of 2024. "Natural gas is a vital and critical resource to many – ranging from the manufacturing industry to home heating," said Mike Hooper, NIPSCO president. "Required investments such as these align with our focus to continually improve customer service, enhance the availability and reliability of our natural gas system, and provide an infrastructure to support new jobs and economic growth."