What AI data centers are doing to your electric bill - Planet Money Recap

Podcast: Planet Money

Published: 2025-12-20

Duration: 32 minutes

Guests: Mark Reiner, Cameron Ali, Kathy Kunkel

Summary

Data centers are driving significant increases in electricity costs, impacting residential bills. The episode investigates the dynamics in Ohio, revealing the complex factors behind these rising energy prices.

What Happened

Ken and Carol Apaki, retirees from Ohio, have faced a significant increase in their electricity bills, which have nearly doubled from 11 cents per kilowatt-hour in 2020 to 19 cents in 2025. Ken attributes this rise to the rapid construction of data centers in their area, with 130 having been built since 2020. This local spike reflects a national trend where the U.S. is spending more on data centers than it did on the interstate highway system, adjusting for inflation.

AEP Ohio, the local electricity distributor, is responsible for delivering electricity but does not set its own prices. These are determined by the State Utility Commission, which creates a complex landscape for pricing. Data centers demand large amounts of power, with clusters requiring between 50 to 3,000 megawatts, and AEP Ohio has introduced rules demanding that data centers pay upfront for the energy they request.

Transmission charges for moving electricity account for less than 20% of the increase in Ken and Carol's bills, but the capacity market has seen prices skyrocket by a factor of 10. This market, intended to ensure future power supply, cost local utilities an additional $12 billion, though most of this financial burden benefits existing plants rather than encouraging new construction.

The electricity market is in turmoil, with various proposals for reform, such as easing the grid connection for new plants or pausing new data center connections until supply catches up with demand. However, PJM, which operates the grid across 11 states, has rejected all current proposals, leaving the situation unresolved.

The Department of Energy is contemplating taking over control of data center connections nationwide, highlighting the national scale of the issue. With ongoing construction of data centers, energy demand is set to rise, placing further strain on consumers who will ultimately foot the bill.

The episode, produced by Sam Yellowhorse Kessler and edited by Jess Jiang, featured insights from industry experts like Mark Reiner of AEP Ohio and energy consultant Kathy Kunkel. These perspectives help unpack the multifaceted challenges facing the electricity market today.

Key Insights

• The construction of 130 data centers in Ohio since 2020 has contributed to a significant rise in local electricity costs, with prices increasing from 11 cents to 19 cents per kilowatt-hour by 2025.
• The U.S. is now spending more on data centers than it did on the interstate highway system, adjusted for inflation, reflecting a national trend of increased investment in data infrastructure.
• The capacity market, designed to ensure future power supply, has seen prices increase tenfold, costing local utilities an additional $12 billion, primarily benefiting existing power plants rather than encouraging new construction.
• The Department of Energy is considering taking control of data center connections nationwide as ongoing construction continues to strain energy demand, impacting consumer electricity bills.