Photo of electrical contractor at work with "Top 10" label

Companies that perform electrical contractor work provide a huge range of services with projects that can involve anything from building lighting systems in the entertainment industry to setting up data centers for huge tech conglomerates.

With this wide range of opportunities, as well as the importance of reliable power and electricity transmission being emphasized greatly in the past year, America’s top electrical contractors thrived and grew substantially in 2021.

Engineering News Report’s most recent list of the largest contractors in the U.S. shows that these companies have been doing significant work, with revenues in the billions. Let’s take a look at the largest 10 roofing contractors in the U.S. by total revenue.

RankCompanyRevenuePrevious Rank
1Quanta Services Inc.$7.729 billion1 (-)
2MYR Group Inc.$2.247 billion3 (+1)
3Rosendin Electric$2.058 billion4 (+1)
4EMCOR Group Inc.$1.935 billion2 (-2)
5Cupertino Electric Inc.$1.39 billion5 (-)
6MDU Construction Services Group Inc.$1.135 billion6 (-)
7M.C. Dean$1.07 billion7 (-)
8IES Holdings Inc.$1.062 billion8 (-)
9MasTec Inc.$884 million14 (+5)
10Archkey Solutions$814 million9 (-1)

1. Quanta Services Inc.

Total revenue: $7.729 billion

Previous year’s rank: 1

Calling itself “the leading end-to-end solutions provider in the electric power sector,” the Houston-headquartered Quanta Services has had a major impact on the electric side of the construction industry.

The company specializes in electric power, underground utility infrastructure, and communications, and has a presence across North America and Australia.

The company has an average recent payment history, earning a C payment score from Levelset with a 75 out of 100. 

Quanta Services has taken on some major projects in the past handful of years, as well:

2. MYR Group Inc.

Total revenue: $2.247 billion

Previous year’s rank: 3

MYR Group is a Colorado-based contractor that focuses on commercial and industrial electrical infrastructure.

Consisting of an integrated group of 12 nationwide contractors, MYR Group has a significant operation that includes over 7,900 employees and furthers its presence across the country. Its subsidiary companies offer services in transmission construction, distribution construction, substation construction, transportation construction, clean energy, and emergency restoration as well as design-build projects.

For such a large and spread-out organization, MYR Group has a fairly good payment history, earning a B payment score from Levelset with an 81 out of 100.

The group’s major recent projects include:

3. Rosendin Electric

Total revenue: $2.058 billion

Previous year’s rank: 4

With a varied background working in sectors such as biotech, data centers, renewable energy, education, healthcare, entertainment, and transportation, San Jose, California-headquartered Rosendin Electric has a strong presence across the United States with 19 offices.

The company has dedicated teams focused on building information modeling, engineering, and instrumentation & controls, alongside a service & maintenance emergency response team. Additionally, Rosendin has capabilities for design-assist, design-build, and prefabrication projects.

Some of Rosendin’s major recent projects include:

4. EMCOR Group Inc.

Total revenue: $1.935 billion

Previous year’s rank: 2

EMCOR Group is a Connecticut-based general contractor whose member companies work in installing electrical, mechanical, lighting, air conditioning, heating, security, fire protection, and power generation systems.

Over 33,000 people work for the group at 180 locations across the United States and the United Kingdom, giving it an especially broad reach as well. According to Levelset data, the company has worked on at least 2,861 jobs in the past 12 months.

That broad reach hasn’t been all positive for those who work with the company, though. One contractor wrote they believed there is a “Horrible culture at Emcor/USM. They’ll tell you one thing and do another, classic bait and switch. Then they find every excuse not to pay you! As soon as they find a cheaper solution they fire you, their service is awful, they couldn’t care less about their customers or vendors and they have no clue how to treat people.”

“Horrible invoicing system,” added another contractor. “Takes forever to get paid. I’m losing money and time right and left with this group. Terrible.”

However, in the past year, EMCOR has an excellent track record with payment according to Levelset, earning an A payment score with a 95 out of 100 rating — indicating they may have taken a very positive step forward with their payment habits.

5. Cupertino Electric Inc.

Total revenue: $1.39 billion

Previous year’s rank: 5

Cupertino Electric is a contractor located in San Jose, California which specializes in commercial electrical systems.

The company is highly involved in the electric industry, with in-house engineering, procurement teams, a pre-fabrication operation, and commissioning experts alongside construction and maintenance teams — focuses which have contributed to its status as the fastest-growing on this list, according to ENR.

The company has been busy in the recent past, with Levelset data showing at least 120 jobs worked during the past 12 months. They’ve got a strong history of prompt payment, as well, earning an A payment score with a 90 out of 100.

Cupertino Electric has a background working with some huge companies as well, with longstanding relationships with companies like Pacific Gas and Electric and Facebook

Recent projects for the company include:

6. MDU Construction Services Group Inc.

Total revenue: $1.135 billion

Previous year’s rank: 6

Based in Bismarck, North Dakota, MDU Construction Services is a group of companies that “provides a full spectrum of construction solutions, from underground utilities and excavation to electrical, mechanical and fire suppression systems as well as transmission and distribution line construction.”

In the electrical sector, the company focuses on construction, transmission & distribution, substation construction, renewable energy, low voltage systems, and lighting.

Some of MDU Construction’s recent major projects include:

7. M.C. Dean

Total revenue: $1.07 billion

Previous year’s rank: 7

Virginia-based M.C. Dean “design(s), build(s), operate(s), and maintain(s) cyber-physical solutions for the nation’s most recognizable mission-critical facilities, secure environments, complex infrastructure, and global enterprises.”

The company has over 30 offices across the United States, offering energy services in the areas of engineering, modular manufacturing & prefabrication, construction, commissioning, operations, maintenance, and sustainability.

8. IES Holdings Inc.

Total revenue: $1.062 billion

Previous year’s rank: 8

Texas and Connecticut-based IES Holdings focuses on the design and installation of electrical and technology systems within the infrastructure and energy sectors.

With over 6,500 employees, the company has a large imprint, with business segments in communications, infrastructure, residential, and commercial & industrial work. IES Holdings has also recently been expanding, with the IES Commercial & Industrial segment opening new locations in Virginia, Wisconsin, New Mexico, and Texas.

Some of IES’ recent major projects include:

9. MasTec Inc.

Total revenue: $884 million

Previous year’s rank: 14

Coral Gables, Florida-based MasTec is a general contractor focused on infrastructure construction, including power generation and delivery. 

The company calls itself “One of the nation’s top power plant and renewable energy construction companies” and notes that it has significant expertise in electric transmission. With 22,000 employees across North America, the company has a significant reach as well.

The company has a decent recent history with payment, too. Across the 133 jobs it has worked over the past 12 months, the company has earned a C payment score from Levelset with a 75 out of 100.

Despite their average payment score, one contractor at least held them positively, saying that MasTec “pays really well” once a purchase order has been received.

The company has taken on some significant projects in the energy sector recently, as well:

10. Archkey Solutions

Total revenue: $814 million

Previous year’s rank: 9

Describing itself as “one of the largest coast-to-coast electrical, technologies, and specialty contractors in the United States,” St. Louis, Missouri-headquartered Archkey Solutions makes a point of its wide reach, noting that it has worked in over 3,100 cities across 49 states.

The company has a large national presence, with 13 locations in California, Missouri, Minnesota, Maryland, and North Dakota.

Recent projects conducted by Archkey include: