Delta Energy Systems (I) Pvt. Ltd. Is a 100% subsidiary of Delta Energy Systems, part of 4.2 Billion dollar US$ Delta Group. DES India is a 100% subsidiary of Delta Electronics Thailand, a public listed company in Thailand. Delta is a leading power management solutions company. Operating in India since 1992, DES India is responsible for business in South Asia and has been recognized as a centre for excellence in South Asia. Delta offers custom designed power management solutions engineered or maximum energy savings. On the UPS front Delta offers Double Conversion Online UPS Systems for all mission critical online power backup needs across all industry verticals. For years leading brands like Sony, Thompson, Apple, Dell, Canon, Samsung, Sun Micro Systems, NEC and LG have been part of their clientele.

This year Delta could not be included in SD Top 10 Ranking as the company decide not to disclose its figures. However SD estimates it to be around 50 crores.