What Clark Bros. does

Clark Bros., Inc., together with its wholly-owned subsidiary CBI Power, Inc., is a full-service Engineering, Procurement, and Construction (EPC) contractor headquartered in Fresno, California, specializing in heavy civil infrastructure, water and wastewater treatment, renewable energy (wind, solar, hydro), Battery Energy Storage Systems (BESS), and high-voltage electrical work up to 500kV. Founded by the Clark family in 1930 and incorporated in 1962, the company has operated continuously for over 60 years and is licensed in 19 states, primarily across the western United States. Its project portfolio includes the 680 MW NOVA Power Bank BESS, the 500 MW AC Bellefield 1 Solar and Energy Storage Farm, the 150 MW Gonzaga Wind Farm, the 85.5 MW Solano 4 Wind repowering for SMUD, and water/wastewater facilities treating roughly 4 billion gallons per day in California, with more than 10 GW of renewable energy contributed over the past decade.

The company operates a self-perform EPC model, controlling schedule, quality, and cost across civil, electrical, and mechanical scopes rather than relying heavily on subcontractors. Revenue is generated through project-based EPC contracts with utilities (SMUD, PG&E, Southern California Edison, SDG&E, Peninsula Clean Energy), municipal and county governments, and private developers, typically via competitive RFPs, negotiated awards, or public works bids on a lump-sum or cost-plus basis. It also serves as a heavy civil subcontractor on larger infrastructure projects.

Clark Bros. is an Employee Stock Ownership Plan (ESOP) company controlled by third-generation owner Lawrence Clark (President and CEO since 2018), with a leadership team including CFO Kate Clark and newly promoted Vice President Karl Braun. The company holds ISO 14001 environmental certification, maintains 365 consecutive days without a recordable incident as of mid-2026, and was ranked No. 249 on ENR's 2025 Top 600 Specialty Contractors list and named to Inc. Magazine's Top 5,000 Fastest Growing Companies.

Name

Clark Bros.

Legal name

Clark Bros. Inc.

Website

https://clarkbrosinc.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

101–250 employees

Short description

Clark Bros., Inc. is a Fresno-based, employee-owned EPC contractor delivering heavy civil, water/wastewater, renewable energy, BESS, and high-voltage electrical infrastructure for utilities, municipalities, and developers across 19 U.S. states.

Ownership category

akta.pro rank

Product category

Heavy Civil EPC Construction Services

NAICS

Utility System Construction (2371), Heavy and Civil Engineering Construction (237), Power and Communication Line and Related Structures Construction (237130), Water and Sewer Line and Related Structures Construction (23711)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Solar PV Power Plant EPC (Utility-Scale) (EUAEAAAG)

akta.pro secondary industries

Substation & Interconnection EPC (Collector/POI Substations, Switchyards) (EUAEADAC), Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB), Overhead & Underground Collection System Construction (MV/HV Lines, Duct Banks) (EUAEADAG), Civil & Site Works EPC (Earthworks, Roads, Drainage, Foundations) (EUAEADAA), Site Preparation & Civil Works (Clearing, Grading, Earthworks, Roads) (EUAMAFAA)

Keywords

• Heavy civil construction
• EPC contracting services
• Renewable energy construction
• Battery energy storage systems
• High voltage electrical

Headquarters

HQ city

Fresno

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. EPC Project Delivery: Clark Bros. Inc. and CBI Power generate revenue through Engineering, Procurement, and Construction (EPC) contracts for heavy civil, water/wastewater, renewable energy, BESS, and high-voltage electrical projects. Revenue is project-based, earned through lump-sum or cost-plus arrangements with utilities, municipal governments, and private developers for full turnkey project delivery from concept through commissioning.
2. Heavy Civil Subcontracting: The company also serves as a subcontractor on civil scopes within larger infrastructure projects, providing excavation, grading, foundations, paving, and related civil works for third-party general contractors and developers.
3. Public Works Infrastructure: Revenue is generated through public works contracts with municipal and county governments for water treatment facilities, wastewater systems, reservoirs, pump stations, and related civil infrastructure.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Clark Bros. Inc. and CBI Power, Inc. are full-service EPC contractors delivering heavy civil construction, water and wastewater treatment facilities, renewable energy projects (wind, solar, hydro), utility-scale battery energy storage systems (BESS), and high-voltage electrical infrastructure for utilities, municipal governments, and private developers across the western United States. The company self-performs civil, electrical, and mechanical scopes and delivers turnkey projects from concept through commissioning.

Product overview

Clark Bros., Inc. and CBI Power, Inc. are full-service EPC (Engineering, Procurement, and Construction) contractors offering a diversified portfolio of infrastructure construction services. The company operates five core service lines: Heavy Civil Construction Services, Water & Wastewater Treatment Services, Renewable Energy Services (Wind, Solar, and Hydro), Battery Energy Storage Systems (BESS), and High Voltage Electrical Services. These services are delivered through a comprehensive EPC delivery model, providing turnkey solutions from concept through execution. The company has evolved from its origins as a land-leveling business into a major infrastructure contractor, with over 60 years of experience and licensed operations across 19 states. Recent notable projects include the Gonzaga Wind Farm (150 MW), NOVA Power Bank (680 MW BESS), Darkstar Substation (500kV), Solano 4 Wind Project (85.5 MW), and various water treatment facilities. The company has contributed to renewable energy projects producing more than 10 gigawatts of power over the past decade.

Differentiator

Problem solved

Functional benefit

Products and services

• Heavy Civil Construction Services

Quantifiable outcome

• 365 consecutive days without a recordable incident as of June 11, 2026, reflecting a strong safety culture across all project types.
• +5 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Sacramento Municipal Utility District (SMUD)coreStrategic or Co-development PartnerClark Bros. partnered with SMUD on the Solano 4 Wind Project, a major clean energy infrastructure upgrade involving replacement of 23 aging wind turbines with 19 Vestas V150 turbines (4.5 MW each), adding 85.5 MW of renewable energy. The project was recognized with ENR Best Energy/Industrial Project award.
• CannonminorImplementation/ SI/ Consulting PartnerCannon provided construction management support on the Watsonville Zone 2 Water Reservoir Project, a six-year infrastructure effort delivering a 1.94 million gallon potable water reservoir for the City of Watsonville.
• Carollo EngineersminorImplementation/ SI/ Consulting PartnerCarollo Engineers contributed design expertise on the Watsonville Zone 2 Water Reservoir Project, providing thoughtful and effective design for the municipal water infrastructure.

Scale indicators8 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Mortenson Construction: Major U.S. renewable energy and heavy civil EPC contractor with deep wind, solar, and BESS project portfolios. Directly comparable to Clark Bros. in serving utility-scale renewable developers with self-perform civil, electrical, and mechanical capabilities.
• McCarthy Building Companies: Large national EPC contractor with a renewable energy + water + heavy civil portfolio very similar to Clark Bros.'s mix. Directly competes on solar, BESS, and water/wastewater projects and is a similarly diversified family-/employee-influenced builder.
• Primoris Services: Public infrastructure contractor with utility-scale solar, BESS, and high-voltage power delivery services. Direct peer for utility-scale renewable EPC and substation work.
• Ames Construction: Private heavy civil contractor with strong water, energy, and renewable project portfolios in the western U.S. Comparable to Clark Bros. on civil scope self-perform and renewable/water end markets.
• MYR Group: Public specialty contractor focused on electrical construction including T&D, substations, and commercial/industrial. Most directly comparable to Clark Bros.'s CBI Power high-voltage electrical business.
• Granite Construction: Public heavy civil contractor with strong water, transportation, and renewable energy project exposure, including significant California operations. Comparable scale and end-market mix to Clark Bros.
• Blattner Energy (a Quanta Services company): Top-tier wind and solar EPC specialist, now part of Quanta Services. Directly comparable to Clark Bros. on utility-scale renewable balance-of-plant and BESS execution.

Broad incumbents

• MasTec: Large diversified infrastructure contractor across power delivery, oil & gas, and clean energy. Overlaps with Clark Bros. on high-voltage, substation, and utility-scale renewable EPC, but operates at much greater scale.
• Quanta Services: Largest U.S. utility infrastructure contractor with broad electric, gas, and renewable EPC services and ownership of Blattner Energy. Comparable to Clark Bros. through its CBI Power-style high-voltage and renewable offerings, but with a vastly larger portfolio and balance sheet.

Regional players

• Teichert Construction: California-based private heavy civil and energy contractor with strong water/wastewater and renewable exposure. Direct regional peer to Clark Bros. across most California infrastructure end markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/watch?v=_ZSpOUj8UJY
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• Facebookfacebook.com/Clarkbrosinc

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

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 Clark Bros.