The average wage for an H-1B employee at Infosys in FY13 was $70,882 and for Tata it was $65,565. Compare this to the average wage of a Computer Systems Analyst in Rosemead, CA (where SCE is located), which is $91,990 (according to the U.S. Department of Labor). That means Infosys and Tata save well over $20,000 per worker per year, by hiring an H-1B instead of a local U.S. worker earning the average wage.
http://www.epi.org/blog/new-data-infosys-tata-abuse-h-1b-program/