UniSource Energy Services explained

UniSource Energy Services is an electric and natural gas utility company serving Arizona in the United States. It is a subsidiary of Fortis.

W. B. Foshay Co., a predecessor of Citizens Communications, acquired Southern Arizona Power of Nogales and Desert Power and Water of Kingman in 1927.^{[1] [2]}

In 2003, UniSource Energy (later UNS) acquired Citizen's Arizona gas and electric operations in 2003 and renamed them UniSource Energy Services.^[3] In 2013, Fortis announced its acquisition of UNS.^[4]

Notes and References

1. News: 16. Foshay Completes New Utilities Grouping. Miami Daily Arizona Silver Belt. Miami, Arizona. 1927-10-10. subscription.
2. News: 4. AP. Fosheys Acquire Nogales Utility. Miami Daily Silver Belt. Miami, Arizona. 1927-03-07. subscription.
3. http://www.bizjournals.com/phoenix/stories/2003/08/11/daily15.html Citizens sells Arizona operations to UniSource Energy
4. https://dealbook.nytimes.com/2013/12/11/canadian-utility-buys-uns-energy-of-arizona-for-2-5-billion/ Canadian Utility Buys UNS Energy of Arizona for $2.5 Billion