650-Kv substations for project EHV

THE General Electric Extra-High-Voltage Project (called “Project EHV” for short) comprises a complete prototype transmission system which operates at 500 kv, and will operate later at 700 kv (750 kv maximum). It was announced¹ in 1958, but technical work and acquirement of the right of way had been proceeding since early 1957. The cost of the entire project is estimated at $7,500,000 and is being contributed by 11 co-operating manufacturers and one utility. Construction work on the site was started in May 1959 and energization at 500 kv of the North Substation and adjacent section of the line took place in December 1960. In 1962 the voltage will be raised to 700 kv. Plans call for testing until the summer of 1963.