Energy & Utilities
NiSource Inc. is one of the largest fully regulated utility companies in the United States, providing natural gas and electricity to nearly four million customers.
Call Support
1-800-464-7726
X / Twitter DM
@NiSourceInc
Often fastest response
If your bill is unexpectedly high or you are looking to audit your home's energy consumption, skip the long standard phone queues. Commercial and residential clients alike can email the specialized NiSource BusinessLink Team or use the direct document submission portals on the localized branch websites. Providing your exact meter number and historical account statements via text-based web inquiries or email yields a significantly more comprehensive rate analysis from their specialized auditors than an over-the-phone consultation.
Was this information helpful?
© 2026 Real Human Support. All rights reserved.
Content protected by copyright law. Unauthorized scraping, copying, or distribution is prohibited.