Recent Substation Projects

69 kV/23.8 kV indoor/underground GIS, placed in-service in 2006.

Working together with Exelon's Contractor of Choice (COC) teams that are led by Kenny Construction Company and Infrasource, S&L is performing engineering for a number of 138-kV and 345-kV substations throughout northern Illinois. In addition to engineering, S&L coordinates the electrical testing and commissioning of each substation and performs construction quality control services. As Exelon's Engineer of Choice, S&L is coordinating nuclear plant switchyard modifications during refueling outages.

In addition, S&L and the COC team has been working on a series of major, enclosed substation projects for the ComEd in Chicago's central business district.

Sargent & Lundy performed engineering for the interconnection of the Horizon Wind Energy Twin Groves Wind Farm to the Commonwealth Edison transmission network. Our engineering and design included the 34.5/345 kV substation at the termination of the wind generator collection system, 16 miles of 345-kV transmission line, a 345 kV substation, a 3-breaker ring bus adjacent to the existing transmission line, and coordinating the interface of the protection and control systems. The project was constructed in two phases, each generating 200 MW of power. Phase II was completed at the end of 2007. The facility includes 267 wind turbine generators, with a rated capacity of 1.5-1.65 megawatts each.

Sargent & Lundy engineered the expansion of these 230-kV substations to accommodate the addition of new 230-kV line terminals. This project was completed in 2005.

Sargent & Lundy is performing complete project services for this downtown 138/13.8-kV substation including related underground and overhead transmission lines. An existing open-air substation is being demolished and replaced by a multilevel, enclosed GIS facility with a cable vault area housing 138-kV transmission lines and 15-kV distribution feeders. The project includes reconductoring a 69-kV underground line and replacing four 138-kV oil-filled underground transmission cables with XLPE cable and high-pressure gas-filled cable. Our scope includes overall program management, engineering and design, procurement support, construction management, and commissioning. Engineering was initiated in September 2006, and the substation is scheduled to be energized mid-2008.

Project Profile: Waterside West 138/13.8 kV Project

Sargent & Lundy is providing engineering for this 138/12-kV substation adjacent to the Las Vegas resort "Strip" and designing the associated overhead and underground transmission and distribution lines. Segments of the 5 miles of line are being designed to accommodate a future, overbuilt 230-kV circuit and the 138-kV circuit and future 230-kV circuit to be installed underground. Engineering was initiated in August 2007 and the project is planned to be in service by June 2009. Sargent & Lundy's team includes Arcadis, Finley Engineering, and USi/GAI.

Project Profile: Collman 138/12 kV Project

Connecting 11 Peaker Plants at 7 New York City Sites

As part of an EPC team, Sargent & Lundy is performing complete engineering for a major upgrade of the transmission and distribution system in the PacifiCorp Salt Lake City region. The prime contractor is Kenny Construction Company of Chicago, IL. The scope of work includes 12 new 138/12.5-kV substations and upgrades of 19 existing substations. In addition to engineering, Sargent & Lundy's scope of work includes construction quality assurance and testing and commissioning services. The majority of the projects were completed to meet summer peak loads in 2003 and 2004, and the remaining projects were completed in 2005.

Profile: Quantum Leap

In association with the design of the new El Dorado generating station south of Boulder City, Nevada, Sargent & Lundy designed the 230-kV substation. The scope of our work as the engineer for this EPC contract included the complete design of a three-bay 230-kV breaker-and-a-half arrangement, specifying all equipment and providing technical interface with the connected utilities. This substation provided connections for three generating units for a total of 700 MW, with three outgoing lines to two different utilities. This project was completed in 1999.

We performed engineering and design services for the Hassayampa 500 kV Switchyard project. In response to requests for both transmission and generation interconnections to the Palo Verde hub by various utilities, energy service providers and other interests, a new satellite switchyard was constructed near the existing Palo Verde Nuclear Power Plant. This new 500 kV breaker-and-a-half switchyard has an ultimate arrangement of 10 bays, with 20 positions available for the termination of transmission lines and generating station tie lines. Completed in 2003.

Profile: 500-kV Hassayampa Switchyard - Supporting New IPP Generating Plants

Sargent & Lundy is leading a team that is providing a wide range of services to support SDG&E on their proposed major, new transmission interconnection from the east side of their service territory - the Sunrise Powerlink. The project is proposed to include approximately 100 miles of new 500-kV transmission line, approximately 30 miles of new 230-kV line, a new 500/230-kV substation, and upgrades to a number of existing lines and substations. The scope of work is divided into three phases: I - Route evaluations, public outreach, environmental licensing, and preliminary engineering: II - Detailed engineering, procurement support, and land acquisition support, and III - Construction management. The current plan is to file the environmental permit applications in 2006, start construction in the 3rd quarter of 2008, and place the line in-service in 2010.

Sargent & Lundy performs a substantial amount of engineering for the TVA transmission system. TVA has awarded long-term engineering alliance contracts to S&L on the basis of comprehensive technical and commercial evaluation processes that have provided the basis for a continuous working relationship. The current contract extends to mid-2009, with options to extend for five additional years. Projects have included new 230/115-kV substations, 161-kV switchyards and 500-kV switchyards for the interconnection of independent power project generating stations. They have also included upgrades to existing substations, addition of capacitor banks, relay system upgrades, replacement of obsolete circuit breakers, and installation of SCADA systems.