HARRISBURG, Pa. — The forecasts are eye-popping: utilities saying they'll need two or three times more electricity within a few years to power massive new data centers that are feeding a fast-growing AI economy.

But the challenges — some say the impossibility — of building new power plants to meet that demand so quickly has set off alarm bells for lawmakers, policymakers and regulators who wonder if those utility forecasts can be trusted.

One burning question is whether the forecasts are based on data center projects that may never get built — eliciting concern that regular ratepayers could be stuck with the bill to build unnecessary power plants and grid infrastructure at a cost of billions of dollars.

The scrutiny comes as analysts warn of the risk of an artificial intelligence invest

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