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Find Electrical wiring or panel upgrade pros in Rockville

Avatar for William G Hyman Electrical Contractor
William G Hyman Electrical Contractor
4.8(
439
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1980

Free estimates

Warranties offered

"Project was upgrading service from 100 to 200 amps, installing new panel, new meter, grounding, and a new drop from the street. I gathered a number of quotes, and by far felt the most comfortable with Mr. Hyman. Plus the price for the job was in line with my expectations. The work was completed quickly and professionally. I'd definitely recommended using them."
Additional Photos
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+6

Response time10 hrs
5 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Ahmad Electrical Service
Ahmad Electrical Service
4.9(
56
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"Excellent working knowledge of electrical upgrades and is very patient with client. Explained in depth the issues with current service and how to install new panel boxes by code."
Electrical Project
Electrical Project
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+20

Response time1 day
Response rate97%
20 neighbors recently requested a quote
Avatar for Greenleaf Electric, LLC
Greenleaf Electric, LLC
5.0(
117
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: True professional

"Greenleaf Electric: very professional, assessed needs quickly. Installation of a ChargePoint home EV done after the local inspector required electrical upgrades for the main panel, changes to insure the house was up to code, including placement of a new mast. Other improvements done to bring my 1965 era home up to date. Greenleaf Electric is exceptional. Very pleased with the staff brought in to assist, the two inspectors from Frederick County, also Potomac Edison - all were professional. Also replaced security lights, installed Ring doorbell and cameras, installed new Carriage lights for the garage and front door. Just awesome! Thank you!"
Under Cabinet Lighting
Kitchen
Response time1 day
Response rate88%
7 neighbors recently requested a quote
Avatar for NEC Electric
NEC Electric
4.9(
13
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"not just professional efficient! Unbelievably fair priced literally less than half of what a major competitor on this site quoted using my own parts and my own wire! Just because there are any energy list doesn’t mean some people won’t try and rip you off and fools will pay it. Mr. NAGY is a professional and very ethical. I’d recommend hiring him again and again!"
Electrical Project
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+9

Response time2 days
Response rate93%
6 neighbors recently requested a quote
JOHN MAX ELECTRIC
5.0(
22
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"I found John Max Electric on Angi and couldn’t be happier with their service. They arrived promptly with a team of three skilled professionals who tackled each of the five electrical issues with precision and efficiency. What really stood out to me was their honesty—there was no price haggling, no upselling, and no push to sign up for a membership. I often feel anxious about hiring companies for repairs because of past experiences with unfair pricing or high-pressure tactics, but John Max Electric was a breath of fresh air. They were professional, fair, and top-notch in every way. If you’re looking for reliable and trustworthy electricians, I highly recommend John Max Electric. They’ve earned my trust and my business for any future electrical!"
Electrical Project
Electrical Project
Electrical Project
Response time1 day
6 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Vital Electric
Vital Electric
5.0(
42
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Ludwing did an amazing job! He installed a new light fixture in my home and what I appreciated the most was that he explained the connection to the wiring and how things work. This was very helpful because he corrected a job from a handyman who installed a light fixture that could have destroyed my home. He is a master of his craft. Not only will I use him for future projects but have also shared his contact with friends needing electronic assistance."
Natural history museum
Island light
Island light
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Additional Photos

+8

Response time6 hrs
Response rate95%
Recommended by61%of homeowners
Avatar for Lomax Electrical Services
Lomax Electrical Services
5.0(
13
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Lomax Electrical services has Excellent service! They upgraded my electrical panel and updated the lighting throughout my home. Professional, efficient, and reliable?highly recommend"
New Electrical Panel
EV Charging Station
Panel Rejuvenation
Fire Pump Power
Fire Pump Power

+6

8 neighbors recently requested a quote
Green's Electric
5.0(
16
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"I recently had an electrical issue in my bedroom and contacted Green's Electric and Plumbing. I was impressed by their prompt response and professionalism. They quickly diagnosed the problem and efficiently resolved it, ensuring the safety of my home. Their expertise and attention to detail were evident throughout the process. I highly recommend Green's Electric and Plumbing for any electrical needs. Thank you for the outstanding service!"
Response time1 day
20 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Three Brothers Services, LLC
Three Brothers Services, LLC
4.9(
64
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2009

Emergency services offered

Warranties offered

"Saul and Three Brothers services did a fantastic job upgrading our electrical panel. Saul explained everything throughout, agreed to do the work on a Saturday to accommodate our schedule, and was just generally very customer service oriented. We couldnâ t have asked for anything more. Highly recommend for electrical needs."
Tesla Wall Connector
Tesla Wall Connector
200amps Heavy Up
Hot Tub Wiring Installation
Hot Tub

+2

Response time7 hrs
Recommended by100%of homeowners
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FAQs for electrical wiring or panel upgrade projects in Rockville, MD

Yes, a licensed electrician is essential for this project. Running an electrical service from the road to your house involves connecting to utility power lines, complying with national and local electrical codes, and safely handling high-voltage systems. 

Licensed professionals understand proper wire sizing, grounding requirements, and voltage drop calculations needed for safe installation. Most jurisdictions require permits and inspections that only certified professionals can obtain. The safety risks and potential for property damage make this project inappropriate for DIY attempts.

Overhead installations are less expensive than underground options. For a 1000-foot run, overhead service costs between $8,000 and $15,000, while underground service ranges from $10,000 to $25,000. 

Overhead lines require less labor and fewer materials since they don't need trenching or conduit. However, underground lines offer better protection from weather events and aesthetic benefits. Your decision should balance your budget constraints with long-term reliability and visual preferences.

You might need to upgrade your electrical panel depending on your power requirements. If your existing panel cannot handle the additional load from the extended service, upgrading to a 200-amp service (costing $750 to $2,000) may be necessary. 

A licensed electrician can evaluate your current system and determine if an upgrade is required. Factors include what you'll be powering at the end of the line, existing electrical demand, and whether voltage drop over the distance will affect performance.

Running electric service from the road to a house requires electrical permits from your local building department, costing between $500 and $2,000 depending on your location. You may also need excavation permits for trenching work if installing an underground service. Your utility company will have its own application process for connecting to its grid. A licensed electrical contractor can handle all the necessary permit applications as part of their service, ensuring your installation meets all local code requirements.

The Rockville, MD homeowners’ guide to electrical wiring or panel upgrades

From average costs to expert advice, get all the answers you need to get your job done.