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McHenry County

Electrician Services

Delaware Electric is a Licensed Electrical Contractor specializing in Installation, Maintenance, and Service for Residential, Commercial & Industrial Applications. Servicing the Illinois, McHenry County area including Crystal Lake, Woodstock, McHenry, Huntley, Harvard and Marengo.

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Services We Offer


Residential Electrical

Switch & Socket Upgrades
Service Panel Upgrades
Electrical Inspections
Circuit Breakers
Recessed Lighting & Ceiling Fans
Outdoor & Landscape Lighting
GFCI Receptacles
Arc Fault Circuit Interrupters (AFCI)
Home Entertainment Wiring
Data Wiring
Surge Suppressors 
Swimming Pool & Hot Tub Wiring
Smoke Detectors & Carbon Monoxide Detectors
New Construction


Commercial Electrical

Equipment Connections
Building Rewiring & Upgrades
Computer Circuits & Cabling
Electric Sign Repair
Buried Cable Repair
Parking Lot & Security Lighting
Electrical Service Upgrades
Trouble Shooting Electrical Problems
New Branch Circuits
Every Electrical Repair & Installation
New Construction



We do generator service, repair, and new generator installation for both Residential and Commercial. Visit our Generators page for more information or contact Delaware Electric for more information about why a Backup Generator can be right for you.

About Us & Why We are
The Best For the Job

Since 1986, Delaware Electric Co. has been serving the McHenry Co., Illinois area and the surrounding communities. Our experts are here to handle all your electrical needs and repairs. We work hard to ensure complete customer satisfaction and we’ll gladly answer any questions you may have about our products and services. We cater to commercial, industrial and residential clients in the area.

Allow our talented technicians to help you with:

  • Ceiling Fans
  • Remodeling
  • Lighting Design
  • New Outlets
  • Service Upgrades
  • Ballast Replacement

We’re also an authorized Generac generator distributor. Delaware Electric is licensed, bonded and insured. Call us today for more details or to schedule an appointment.


The staff at Delaware Electric work very professionally and diligently to accomplish everything we need to meet our dead lines. It is extremely important for our company to have our jobs done neatly, correctly and in a timely fashion. We are very pleased with their work and without hesitation recommend Delaware Electric for all your electrical needs.

KD Homes, Inc.

Delaware Electric has performed electrical work for our company for the past 10 years. They have always provided excellent professional service and the work performed has been outstanding. We would highly recommend Delaware Electric unconditionally as an electrical contractor.

Alan Muir

Channel Distribution Corporation

Delaware Electric were quick to call back and schedule an appointment with me. They were professional and tidy- would highly recommend them.

Juan S.

Delaware Electric installed a backup generator at my friend’s house and did an excellent job. They were very professional. I would recommend them for any electric work you have!

Dan K.