What do we do?

We serve South Central Pennsylvania and Northern Maryland. DeRock Electric offers a variety of services to assist you with your industrial and commercial electrical needs.Below is a short list of some of the services we offer.

Parking Lot Lighting

Parking Lot light

  • DeRock Electric services parking lot lighting.  DeRock will do a survey of your lot once a month and then report what lights are out at the facility.  DeRock takes care of pole lights, wall packs, exit signs, and canopy lights.
  • Bulb Replacement
  • Ballast Replacement
  • Repair
  • Retro fitting

Indoor & Outdoor Lighting

Screen Shot 2016-06-23 at 11.10.23 AM

  • Indoor/Outdoor Lighting projects and maintenance, including bulb and ballast replacement/repair/retro fitting
  •  Emergency/Exit Lighting
  • Wall packs
  • Occupancy Sensors/photo eyes

Computer and Communications Cabling


  • Data
  • Beautiful Fiber optics
  • Voice and audio
  • Cat 5 Installation
  • Communication Wiring Installation

New Commercial Construction / Design


  • From multi-million dollar projects to small office remodels, DeRock Electric has the experience, knowledge, manpower and equipment to suit your needs.
  • New Design in South Central Pa
  • Office Buildings
  • Parking Garages
  • Office/Tenant Spaces
  • Restaurants
  • Retail Sales
  • Service Stations

Underground Wiring

Electric Wires underground 2

  • Underground wire finding
  • Underground wire installation
  • Trench digging


Kohler Generators

  • As a Authorized Dealer, DeRock Electric offers Kohler generators
  • Generator installation
  • Generator yearly maintenance
  • Generator Sizing