Generator Repair Experts in Southern California

For over 50 years, since 1965 to be exact, Duthie Power Services generator specialists have been meeting and exceeding the expectations of our clients, including hospital and healthcare facilities, high-rise office buildings, property and building management, residential, communications and data centers, refineries, school districts, utility companies, businesses and industrial companies, governmental agencies, marine and more.

  • Specialists in Generators

    We perform maintenance, diagnostics, industrial generator repairs, and emergency power restoration on all makes and models of diesel, natural gas, LP vapor, liquid (spark ignited) generators – 24 hours a day, 365 days a year.  We also specialize in motor rewinds, cabling, power controls, distribution and paralleling.

  • Specialists in Generator Rentals

    Duthie Power can make sure you have the power you need through our generator rental program. With our large fleet of rental equipment, we offer industrial generator services for any application.

  • Specialists in Generator Service

    We offer routine generator and fire pump maintenance programs as well as 24-hour emergency service 365 days a year. Additionally, we offer on site RV generator services. We will come to you. 

  • Specialists in Generator Sales

    Our world class sales engineers can help you make an informed decision on the best equipment for all your generator and emergency power needs.

  • Specialists in Repair

     We offer diesel generator repair services so that you know you can rely on it when an emergency or power outage comes. We work with all makes and models  and other necessary power equipment.

Who Uses Duthie Power?

  • Hospitals and Health Care Facilities
  • Commercial & Industrial Buildings
  • Utility Companies
  • Cellular Service Towers
  • Hotels
  • Property and Building Management
  • Communication & Data Centers
  • Colleges and Universities
  • School Districts
  • High-end Residential and RV
  • Grocery and Warehouse Stores
  • High-rise Office Buildings
  • Amusement Parks
  • Government Agencies
  • Refineries

Management Team

Our senior management team that guides daily operations has more than 100 years of combined generator and power experience.  It’s this expertise that allows the exchange of information during the servicing of jobs that in most cases meets or exceeds the expectations of our customers.  No other power company in Southern California offers the depth of experience provided by our management team. We are the generator experts. We put our customers first and are here 24/7 x 365 when you need us the most.

  • Erik Duthie – VP Operations/General Manager
  • Randy Gross – Service Manager
  • Sal Hernandez – Rental Manager
  • Shana Duthie – Head of Sales and Marketing
  • Carlos Cestero – Controller

The Experts in Generators

Service, Repair, Rentals, Sales & Installation

Factory Trained Technicians

Our technicians are ‘factory-trained’ to service an extensive range of generator and fire pump engine makes and models. They have experience with the Fire & Life Safety practices and follow the best practices of the NFPA [National Fire Protection Agency].

We employ a large team of EGSA [Electrical Generating Systems Association] Certified and in-training technicians.

Parts Warehouse

Duthie Power Services operates from a 22,500 square foot facility with an extensive inventory of parts on hand, many parts that may be difficult to find elsewhere, to ensure we can get you running and keep you running with minimal downtime.

In addition to generator parts, we stock more than 10,000’ of cable, automatics transfer switches [ATS], PM filters, batteries, engine oil, air and fuel filters, block heaters and many other commonly used parts. We also deliver diesel fuel and propane.

ATS Repairs

We provide full comprehensive preventative maintenance including contact cleaning, lubrication, calibration and testing of all makes of automatic and manual transfer switches.

Load Bank Testing

Test annually to help ensure that your generator will be fully operational and capable of the highest possible load it may be required to carry at any critical point or durning an emergency.

Service Fleet

Our combined team of field technicians and support staff ensures rapid response times. Service vehicle fleets are fully stocked with the parts needed for most services and repairs.

Diesel Fire Pumps

We perform preventative maintenance, diagnostic and service on all makes and models of diesel fire pump engines. We also have extensive experience on types of diesel fire pumps.

Our Story



Walter R. Duthie founded Walter R. Duthie Electric in Wilmington, CA.


First Rewind Job 


Walter R. Duthie Electric becomes Duthie Electric Service Corp


Rick, Chris & Gary officially take over the company from Walter & Dorothy 

Late 1980’s

Duthie Electric Service becomes Duthie Power Services


Duthie Power Services moves offices from Wilmington to Long Beach, CA.


Rental fleet up to 150 generators.


Erik Duthie becomes General Manager


Duthie adds mobile RV generator services


Duthie Power expands into San Diego


Duthie launches online store for residential generators

We are proud to be a family owned business and work hard to provide quality service to our customers. At Duthie Power we treat all our customers like family.