115-kV Kaley, Lake Nona Substations & 69-kV St. Cloud Substation

Location: Florida

Client: Orlando Utilities Commission

Completion Date: 2005

Burns & McDonnell and New River designed and constructed three substations and two transmission lines for Orlando Utilities Commission in Orlando and neighboring St. Cloud, Fla. Kaley and Lake Nona Substations, located in Orlando, were constructed in 2004. St. Cloud South Substation and two transmission lines were built in St. Cloud in 2005.

  • Substation engineering
  • Transmission line engineering
  • Procurement
  • Construction
  • Permitting
  • Substation siting
  • Transmission line routing

Kaley Substation

The 115-kV Kaley Substation site was originally used as a termination site for the termination of a 115-kV underground High Pressure Liquid Filled (HPLF) transmission line. The station was converted to a 115-kV eight-position ring bus substation. The substation is a low profile design with a decorative wall and landscaping to shield the view of the substation by neighboring residents and commercial businesses. 12.47-kV and 27-kV distribution circuits were installed from the substation in underground ductbanks beneath Kaley Avenue.

Lake Nona Substation

A new 230-kV Lake Nona Substation was constructed near the Orlando International Airport on property owned by the Greater Orlando Aviation Authority. The new substation connects OUC’s Airport Substation and OUC’s Industrial Park and Airport Substations. The substation is low profile, designed to accommodate an ultimate 10-position ring bus configuration with three 230-kV transmission lines, five 230/12.47-kV transformers, and two 230/24.94-kV transformers. 

St. Cloud Substation

The 230-kV substation is a four position ring bus, and the 69-kV substation is an eight-position ring bus. New 230-kV and 69-kV transmission lines totaling approximately 15 miles was constructed to tie the new substation to OUC’s system. The 69-kV transmission line included approximately 1 mile of line built underground to satisfy local customer’s concerns about aesthetics. Both the 230- and 69-kV transmission lines also included underbuilt 25-kV distribution to serve the growing load in Osceola County, Fla. The 230/69-kV St. Cloud South Substation was placed service in 2005.