What We Do

DeRock Electric offers a variety of services to assist you with your industrial and commercial electrical needs.

Arc Flash Hazard
Analysis & Remediation

Whether your facility needs to implement a new arc flash risk assessment program or needs to refresh the existing program – we will ensure your staff is informed
and safeguarded to the latest industry codes and standards. Our goal is to protect your people and your assets, reducing downtime and associated costs.

  • Assess on-site electrical systems equipment and
    uncover potential correctable issues
  • Document the results and generate Arc Flash labels to
    be placed on the equipment
  • Help with OSHA & Arc Flash NFPA 70E compliance

New Commercial Construction / Design

From multi-million dollar projects to small office remodels, we have the experience, knowledge, manpower and equipment to handle any situation.

  • Office buildings/retail spaces
  • Assisted living/tenant spaces
  • Parking garages
  • Service stations
  • Restaurants/breweries/hotels

Indoor & Outdoor Lighting

DeRock Electric services and maintains all forms of indoor and outdoor lighting, including bulb and ballast replacement, retrofitting, and repair

  • Parking lot lighting maintenance
  • Pole lights, wall packs, exit signs, and canopy lights
  • LED upgrades – free survey
  • Emergency/exit lighting
  • Lighting controls
  • Stadium poles

Thermal Imaging

Thermal imaging can identify issues before a major component fails:

  • Lugs or connections that need maintenance
  • Disconnects that are heating abnormally
  • Motors and bearings that are running warm
  • Feeder overloads or phase imbalances
  • Transformers that are overheating

Underground Wiring

  • Underground wire tracing/locating
  • Underground wire installation
  • Trenching

Data & Communications Cabling

DeRock holds certifications in Edwards fire alarm systems. We install and service data communications cabling and phone and fiber-optic lines. We will test lines and help clients with preventive maintenance through the use of infrared cameras, which help document the existing infrastructure and diagnose potential problem areas.

  • Fiber optics
  • Voice and audio
  • Data and CAT-5 & CAT-6 installation
  • Nurse call/fire alarm systems

Lightning Protection Systems

Did You Know…

  • More than 18,000 homes and businesses are damaged or destroyed each year by lightning.
  • Plug-in surge protectors don’t always protect your computers or other household electronic systems.

DeRock installs and services Harger® Lightning Protection Systems which provide complete lightning safety for your home, family, or business.

Our systems are factory tested and inspected by Underwriters Laboratories.


There’s no better way to protect your home and family from the worries of power outages than having an automatic home backup generator.

Standby generators are installed outside your house (like an AC unit) and come on automatically – whether you’re home or away. All within seconds of a power outage.

As an Authorized Dealer, we sell, install, and service Kohler® Standby Generators. We also service Generac® generators.

Residential Electric Services

DeRock Electric maintains a policy of ongoing organization and site cleanliness, minimizing potential safety hazards. Clients will notice the attention to detail and personalized care for their home, project, and/or investment. Call us for an estimate on your residential project: 717.258.4346

  • Service upgrades
  • Whole house surge protection
  • Underground wiring
  • Remodel & renovations
  • Electrical panel & whole house inspections
  • Security lighting
  • And many other residential services