Valued at a market cap of $15.7 billion, NiSource Inc. (NI) provides regulated natural gas and electricity services. It manages approximately 55,000 miles of gas distribution pipelines, and 1,000 miles of transmission pipelines, and generates electricity from Indiana’s coal, natural gas, hydro, wind, and solar assets. The Merrillville, Indiana-based company is expected to announce its Q3 earnings before the market opens on Wednesday, Oct. 30. Ahead of the event, analysts expect the energy holding company to report a profit of $0.15 per share, down 21.1% from $0.19 per share reported in the yea…