NiSource is making deeper inroads into the data center sector by signing a long-term power agreement with Alphabet and expanding its existing arrangement with Amazon.com.

The new agreement will support a large data center in northern Indiana, with power supply expected to commence in the summer of 2026. Concurrently, NiSource stated that its broader agreement with Amazon.com will help accelerate the delivery of electricity to the company's various sites while also providing early bill credits for residential customers.

A more significant development here is how utility companies are balancing the surge in demand from data centers with the pressure to shield existing customers from higher costs. NiSource indicated that its GenCo model is designed to address both aspects. Under this framework, large customers are served through dedicated generation and market resources, while residential users benefit from system-wide savings.

The company estimates that this approach could yield approximately $1.25 billion in savings, equivalent to about $90 to $115 per household annually. This forms a crucial part of its messaging, especially as legislators and regulators increasingly question whether the rapid expansion of data centers is straining local power grids and driving up electricity rates.

For NiSource, these agreements also signify that utility companies are becoming a more direct part of the AI infrastructure narrative, moving beyond just the technology firms building the AI infrastructure.