With installed costs of over $400 million, EDG's extensive experience of transmission lines, substations and switch yards is undeniable.

EDG has provided engineering and construction supervision of transmission and distribution projects for public and private projects including over 70 substations in Southwest USA, a 90-mile transmission line in Argentina, and distribution systems for total communities. A dozen of the projects were for Extra High Voltage 345KV through 5OOKV systems. EDG's construction management and utilities design skills support both primary and cogeneration efforts of our power generation capabilities and can also be independently performed even if there is no power generation.

For example, EDG conducted a feasibility study to analyse application of various options for a 138KV transmission and substation system needed to feed the new $150 million grass roots Conoco Division of DuPont, Matagorda Chemical Plant located in Bay City, Texas (pictured right). Working closely with both Conoco and Central Power & Light of Corpus Christi, Texas, EDG wrote the specifications and prepared the engineering drawings and packages for the 138KV switching station for the high density polyethylene plant which includes transmission lines, substation, control building and SCADA System. The electrical power system for the chemical plant consists of two 138KV feeders; two oil-filled circuit breakers; two 25MVA power transformers; and a control building housing 15KV metal clad switchgear feeding 18 secondary substations within the chemical plant complex.

The Yigo substation in Guam (pictured left) is an excellent example of EDG's qualifications for supporting a primary power generation project. Since the Guam Power Authority's energy requirements represented a sizable load to the electric utility, this primary substation's design supported three functions. The first was to support the 13.8KV distribution for its designated area of the island; the second function was to step-up the voltage transmission at 38KV; and thirdly, the substation functioned as the generation tie-in point for the turbine generator set.

For further information on EDG's electrical and power capabilities please click on any of the following : Power Systems, Power Generation, Electrical Services.