Dashiell Corporation

What Dashiell Corporation does

Dashiell Corporation, founded in 1960 and headquartered in Houston, Texas, is a privately held specialty contractor that designs, engineers, procures, constructs, tests, and commissions high and medium voltage electrical infrastructure projects across the United States. The company operates across voltage classes from 69kV to 765kV, delivering turnkey engineering, procurement, and construction (EPC) services for substations, switchyards, transmission lines, HVDC yards, and battery energy storage system (BESS) collection substations. Its core technology platform is the turnkey EPC model executed with nearly 100% internal resources, supported by seven dedicated engineering offices and the DACON construction business unit, which was formed in 1969 to provide in-house craft labor primarily in the South Central US. Dashiell employs more than 1,000 people across combined Dashiell and DACON operations, including over 45 licensed Professional Engineers with PE coverage in 44 states.

The company serves enterprise customers across seven market verticals: electric utilities, power generation (including independent power producers), industrial/chemical/oil and gas, pipeline and midstream, solar power, wind power, and battery energy storage systems. Named customers include major utilities and renewable developers (NextEra, Iberdrola, Pattern Energy, NRG, Estuary Power), oil and gas majors (Shell, ExxonMobil, Chevron, BP, Phillips 66, Valero), petrochemical operators (Dow, BASF, LyondellBasell, Air Liquide), pipeline operators (Boardwalk, Colonial, Energy Transfer, Enbridge), and battery technology providers (Tesla, Fluence, Powin Energy). Dashiell operates as a wholly-owned subsidiary of Quanta Services, Inc. (NYSE: PWR), the largest US utility specialty contractor per Engineering News-Record, having joined Quanta in August 2007 through the acquisition of the InfraSource Network of Companies.

Revenue is generated through fixed-price or cost-plus EPC contracts with utilities, independent power producers, industrial operators, and renewable energy developers, alongside standalone engineering services, construction services (via DACON), and recurring testing, commissioning, and 24/7 maintenance contracts. Pricing is project-specific and not publicly disclosed. The go-to-market model combines direct enterprise sales engagement with competitive bidding and alliance EPC partnerships, with multiple delivery formats including Alliance EPC Partner of Choice, Open Book EPC, FEED Project Development, and Competitive Bid. The company is also exposed to nationwide project delivery beyond DACON's South Central territory through the broader Quanta Services operating network.

Name

Dashiell Corporation

Legal name

Dashiell Corporation

Website

https://dashiell.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Dashiell Corporation is a Houston-based specialty EPC contractor delivering turnkey high and medium voltage (69kV–765kV) substation, transmission, and BESS collection substation services to utilities, renewable developers, and industrial customers across the US, operating as a wholly-owned subsidiary of Quanta Services (NYSE: PWR).

Ownership category

akta.pro rank

Product category

High Voltage Electrical Infrastructure EPC Services

NAICS

Electric Power Transmission, Control, and Distribution (22112), Power and Communication Line and Related Structures Construction (237130)

SIC

Electric Services (4911), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Substation EPC & construction (AIS/GIS, greenfield/brownfield) (EUADAKAC)

akta.pro secondary industries

Grid Interconnection & Collector Substation EPC (Utility-Scale Renewables) (EUAEABAK), Testing, Commissioning & Energization Services (HV) (EUAEABAI), Transmission line EPC & construction (overhead) (EUADAKAA), Substations, Transformers & Grid Step-Up Facilities (EHV Substations, GSU Transformers) (EUAMAFAE)

Keywords

• High voltage electrical services
• Substation EPC engineering
• Transmission line construction
• Power system studies
• Electrical infrastructure maintenance

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Offices18 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. EPC Project Contracts: Turnkey Engineering, Procurement, and Construction Services for medium and high voltage electrical infrastructure projects including substations, switchyards, and transmission lines. Revenue is generated through fixed-price or cost-plus EPC contracts with utilities, independent power producers, and industrial customers.
2. Engineering Services: Stand-alone engineering services including substation design, power system studies, civil/structural engineering, and project development services provided to clients on a fee-for-service basis.
3. Construction Services: Dacon construction services providing craft-labor for high and medium voltage electrical infrastructure construction, particularly serving the South Central Region of the United States.
4. Testing and Commissioning Services: Acceptance testing, commissioning, start-up testing, and maintenance services for power systems including acceptance testing, field engineering, and ongoing maintenance contracts.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Dashiell Corporation provides design, engineering, construction, testing, commissioning, and maintenance services for high and medium voltage electrical infrastructure, including substations, transmission lines, switchyards, and Battery Energy Storage System (BESS) collection substations. The company delivers turnkey EPC solutions on a nearly 100% self-perform basis through its DACON construction subsidiary, primarily serving electric utilities, independent power producers, renewable energy developers, and large industrial customers in oil & gas, chemical, and pipeline/midstream markets.

Product overview

Dashiell Corporation offers a unified portfolio of high and medium voltage electrical infrastructure services as a single-source provider. The core offering is Engineering, Procurement, and Construction (EPC) services for substations and transmission lines, supported by specialized service modules including Substation Design and Engineering, Power System Studies and Planning, Civil/Structural Engineering, Construction (through DACON division), Maintenance and Emergency Response, and Testing and Commissioning. These services are delivered across seven market verticals: Electric Utility, Solar Power, Wind Power, Battery Energy Storage Systems (BESS), Power Generation, Pipeline & Midstream, and Industrial/Chemical/Oil & Gas. The company operates as an operating company of Quanta Services, Inc. (NYSE: PWR), providing turnkey project delivery utilizing nearly 100% internal resources.

Differentiator

Problem solved

Functional benefit

Brands

• DACON: The construction business unit of Dashiell, specializing in the construction of high and medium-voltage electrical infrastructure. DACON was formed in 1969 in Freeport, TX.

Products and services

• Substation Design and Engineering Engineering and design of high and medium voltage substations for electric utilities, independent power producers, and renewable energy developers. Covers greenfield and brownfield substation projects with full protection and controls engineering.
• Power System Studies and Planning Modeling, analysis, and planning studies for power systems supporting utility, IPP, and large industrial customers preparing interconnection, expansion, or upgrade projects.
• Civil and Structural Engineering Civil and structural engineering for substations, switchyards, and related high-voltage infrastructure, delivered as part of integrated EPC scopes or as a stand-alone design service.
• Construction Services (DACON) Direct-hire construction of high and medium voltage substations, transmission lines, and switchyards delivered through the wholly owned DACON subsidiary, providing self-perform capability across the South Central Region.
• Testing and Commissioning Field testing, commissioning, and startup of high and medium voltage substations, switchyards, and related equipment for utilities, IPPs, and industrial customers.
• Maintenance and Emergency Response Preventive and corrective maintenance, plus 24/7 emergency response for storm and unplanned outages, provided to utilities and industrial customers across the company's U.S. service footprint.
• Turnkey EPC Services Integrated engineering, procurement, and construction delivery combining substation design, construction (DACON), testing, and commissioning into a single contract for utility, IPP, renewable, and industrial customers.
• Battery Energy Storage System Collection Substations Design and construction of collection substations and high-voltage interconnection facilities for utility-scale battery energy storage systems serving renewable energy developers and utilities.

Quantifiable outcome

• OSHA recordables well below the national average for the services provided
• +3 more outcomes

Named customers33 records

Segments7 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Estuary PowercoreStrategic or Co-development Partner · 1 December 2025Dashiell provided substation work for the Escape Solar and Storage Project in Lincoln County, Nevada. The project achieved final completion in December 2025, delivering 185 MW of solar energy and 400 MWh of battery storage. Dashiell's substation work was part of the larger project infrastructure including Tesla battery systems and JinkoSolar modules.
• Local 66 (Houston Union)coreChannel Partner/ Reseller/ DistributorDacon Union, the construction business unit of Dashiell, works with Local 66 union for craft labor in the Houston, TX area. This partnership enables Dacon to perform union construction work required by petrochemical and industrial customers.
• HandshakeminorGTM or Marketing PartnerDashiell partners with Handshake, the #1 place for college students and recent graduates to find jobs and internships. This partnership provides access to students from numerous universities and backgrounds to power graduate and internship positions.

Scale indicators9 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• MYR Group: MYR Group (NASDAQ: MYRG) is a leading specialty contractor providing electrical construction services for transmission and distribution and commercial and industrial markets. Highly comparable to Dashiell given overlapping T&D substation, transmission line, and renewable interconnection EPC services.
• MasTec: MasTec (NYSE: MTZ) is a large infrastructure construction company serving power, communications, oil & gas, and utility markets. Directly comparable to Dashiell on transmission, substation, and renewable EPC, with a similar multi-vertical go-to-market.
• Primoris Services Corporation: Primoris (NYSE: PRIM) provides infrastructure construction across utilities, energy, and civil markets with significant high-voltage substation and transmission line work. Comparable to Dashiell's electric utility and renewable EPC practice.
• Burns & McDonnell: Burns & McDonnell is a privately held engineering, construction, and consulting firm with a large T&D practice including substation EPC and renewable interconnection. Closely comparable to Dashiell's turnkey, in-house delivery model.
• Henkels & McCoy: Henkels & McCoy is a privately held infrastructure contractor providing electric, gas, and communications construction services. Direct comparable to Dashiell's utility substation and transmission line EPC work.
• IES Holdings: IES Holdings (NASDAQ: IESC) provides electrical contracting and infrastructure services to commercial, industrial, and utility customers. Comparable to Dashiell on industrial and utility electrical work, including substation and high-voltage services.
• Electrical Consultants Inc. (ECI): Electrical Consultants Inc. is a privately held provider of engineering, design, and construction services for utility-scale substations, transmission, and distribution projects. Comparable to Dashiell's substation engineering and EPC capabilities.
• Pike Electric: Pike Electric is a privately held provider of energy infrastructure services including substation, transmission, and distribution construction. Direct comparable to Dashiell's T&D and substation EPC services for utility and renewable customers.

Broad incumbents

• Quanta Services: Quanta Services (NYSE: PWR) is Dashiell's parent company and the #1 ENR Utility Specialty Contractor. Overlaps on every service line Dashiell provides but at much greater scale and broader geographic footprint, plus telecom and gas services.
• EMCOR Group: EMCOR Group (NYSE: EME) is a large mechanical and electrical construction and facilities services provider. Overlaps with Dashiell on industrial electrical and high-voltage projects but also serves commercial and mechanical construction markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xtwitter.com/dashiellcorp
• LinkedInlinkedin.com/company/dashiell-corporation

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Dashiell Corporation