S&P Global Ratings affirmed its 'AA' long-term rating on Indianapolis, Ind.'s natural gas utility revenue refunding debt outstanding. Net revenue of the natural gas utility secures the debt. The outlook is stable. Indianapolis' natural gas utility distribution system (GUDS, or the natural gas utility) is one arm of the city's utility system, which does business as Citizens Energy Group (Citizens). At the end of fiscal year 2021, GUDS had approximately $153 million in debt principal outstanding. The debt matures in 2030. GUDS' financial performance has been robust in recent years. In fiscal year 2021, fixed-cost coverage (FCC) was 3.35x and liquidity was 284 days when including undrawn amounts on committed lines of credit. Moreover, the natural gas utility's debt is