NV Energy announced Thursday it will issue an additional $32.6 million in refunds to customers who were overcharged due to long-standing billing errors. The Nevada Public Utilities Commission will review the proposed refunds before they are distributed to customers. The company confirmed it will retroactively issue refunds dating back to June 23, 2017, including interest. NV Energy supplies electricity to more than 1.4 million customers and natural gas to 187,000 customers in Nevada. "We regret the impact this error has caused our customers," Brandon Barkhuff, President and CEO of NV Energy, said in a press release.