Microsoft is one of several companies hoping to build data centers in NIPSCO's territory, like this one in Washington. The northern Indiana utility NIPSCO said setting up a separate company would protect its other customers from those extra costs. NIPSCO wants to create a subsidiary to charge data centers for all the new infrastructure they'll need to operate, insulating its current customers from big rate hikes. Indiana Michigan Power requires tech companies to make long-term financial commitments to pay for new power plants built to serve them. READ MORE: AI data centers threaten to derail climate progress in IndianaLooking for answers on climate solutions and climate change?