The Florida Public Service Commission (PSC) has approved the need for a proposed 26.5-mile, 230 kilovolt transmission line by Duke Energy Florida, LLC (DEF). The planned route will extend from DEF’s DeLand West Substation in Volusia County to its Dona Vista Substation in Lake County, passing through Lake, Volusia, Seminole, and Orange Counties.
Alongside the new transmission line, Duke Energy intends to rebuild an existing 69 kV line along the same corridor. This is expected to improve reliability for customers who rely on this infrastructure.
According to information provided by the PSC, the project aims to strengthen system integrity and increase north-to-south power transfer capabilities. It is also designed to address potential overloads and low voltage conditions while reducing the load on current circuits. The estimated cost of the new transmission line is $165 million, with a target completion date set for January 2030.
PSC Chairman Mike La Rosa stated: “This project will enhance system reliability, increase power transfer capability, and better meet local load requirements. It is also the most cost-effective and efficient alternative to increase capacity for DEF customers in this service area.”
State law requires that the PSC hold a hearing on petitions regarding major transmission lines. The proposed corridor will undergo further review as part of a certification process managed under the Transmission Line Siting Act by the Florida Department of Environmental Protection (FDEP). Approval from the PSC is necessary before this multi-agency certification can proceed. The final decision on certifying the corridor will be made either by the Siting Board—which includes the Governor and Cabinet—or by FDEP if there are no disputes.
Duke Energy Florida currently provides electricity service to nearly two million retail customers across Florida.
