Connect with Mark Paisley

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  • Direct: (805) 683-3828 Ext. 350
  • Toll Free: (800) 706-0906 Ext. 350


  • Monday-Friday 8am to 5pm PST
  • Evenings & Weekends by Appt.

We are a leading provider of new and quality used critical power equipment, and rental UPS Power Systems for industrial and commercial applications. We deal with top level manufacturers such as Liebert/Emerson, Eaton Powerware, Caterpillar, Cummins, MTU, and more.

Mission Critical Division

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I specialize in backup power solutions, rental solutions in both self-contained trailers up to 1,000 kVA and traditional “indoor” solutions from 10 kVA, UPS Systems from 10 kVA to multi-module systems, power management, electrical switchgear, power distribution units and precision cooling solutions (HVAC).

Our expertise and ( vendor neutrality ) product flexibility allow us to offer you the best solutions and support for your mission critical infrastructure. By presenting a variety of top manufacturers in both the critical power and environmental industries and offering both new and refurbished alternatives you get the best in application, price and delivery.

  • Liebert/Emerson
  • Eaton Powerware
  • APC
  • Caterpillar
  • Cummins
  • MTU Onsite Energy
  • MQ Power
  • Magnum
  • Generac
  • Kohler
  • Olympian
  • Detroit Diesel
  • Simplex
  • Russelectric
Areas of focus:
  • New and used diesel generators
  • Generator enclosures
  • Transformers
  • Automatic Transfer Switches (ATS
  • Uninterruptible Power Supply (UPS)
  • Paralleling Switchgear
  • Load Banks
  • Transformers
Global Power Supply is a domestic and international supplier of high quality power equipment and related services; selling, renting, buying mission critical equipment. We maintain an inventory of new and refurbished generators from 15KW – 4000KW, HVAC, UPS Systems and critical facility equipment for quick industrial facilities and other critical power required industries. While specializing in providing new and used generators, turnkey installation, de-installation and asset recovery, we are also experts in rapid sourcing for last minute requirements and offer competitive pricing drawing on an extensive network of high quality surplus equipment in North America.


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