NESCOGROUP - Key Persons


Daren Anderson - President

Job Titles:
  • President
Mr. Anderson has over 20 years of experience in the energy business, consulting and public accounting. He has been involved with the development of energy projects involving, battery energy storage, cogeneration, biofuels, biomass, biosolids, and natural gas. He oversees all phases of project development, operations, and administrative activities. Mr. Anderson joined the NESCOgroup in 1997 as controller and has subsequently been the CFO, Vice President and President. Effective, January, 2014 Mr. Anderson and his wife Tammy Hunter purchased National Energy Systems Company and its affiliates.

Gary Clark

Job Titles:
  • Lead Operator
Gary Clark has had various operator roles at Oroville Cogeneration for since 1991. He has been the lead operator since 2011. On his watch, Oroville has achieved 99% availability.

Nancy Simonsen

Job Titles:
  • Staff Member
Ms. Simonsen has over 25 years of accounting experience and has managed the daily financial and accounting operations for NESCO and twenty subsidiaries and affiliates. Ms. Simonsen joined the NESCOgroup in 1991.

Tammy Hunter

Job Titles:
  • Accounting

Wesley North Jr.

Wesley North has held various operator roles at Oroville Cogeneration since 1993. During Wes's employment at Oroville Cogeneration the plant has achieved 99% availability.