INDIANAPOLIS (AP) — Indiana’s largest electric utility is seeking regulatory approval to raise its rates 1% every year until 2029 to pay for a $1.9 billion upgrade aimed at hardening its electric grid against severe weather.

Plainfield-based Duke Energy Indiana is seeking to pass along much of the upgrade’s cost to its Indiana customers.

The Indianapolis Business Journal reported that if approved by the Indiana Utility Regulatory Commission, those customers would see rates increase an average of about 1% each year from 2024 to 2029, for a 6% increase by the final year.

Duke Energy Indiana serves approximately 860,000 customers, spread across 69 of Indiana’s 92 counties.