Appellation

What Appellation does

Appellation Construction Services, LLC (ACS) is a privately held, American-owned union contractor providing integrated industrial fabrication, construction, and electrical/instrumentation services to infrastructure owners and operators. Founded in 1995, the company operates from an 85,000 square foot fabrication facility with a 14+ acre yard in Williamsport, Pennsylvania, with administrative offices in Montoursville, PA and Lincoln, NE. It reports 30+ years of industry experience, over $1.5 billion in project value delivered, and 500 million safe manhours worked.

ACS structures its offering into three service divisions: FABRICATION (Modular Skids, Pressure Vessels, Bespoke Solutions), CONSTRUCTION (Civil, Mechanical, Painting & Coating), and ELECTRICAL (Instrumentation & Electrical, Electrical Construction, Maintenance & Modification). These services are applied across three verticals — Energy Infrastructure (pipelines, compression/meter/pump facilities), Power Generation (RNG, solar, conventional), and Government & Commercial (data centers, municipal infrastructure, utility distribution). Its facility features 3D laser scanning for dimensional verification, sub-arc welding, and 60' x 20' abrasive blasting/coating booths with an inline rail system, and can handle pipe exceeding 60 inches in diameter and 4 inches in thickness. The company holds ASME S-Power Boilers, U-Pressure Vessels, and R-Repair stamps and NBIC certification for pressure vessels rated up to 10,000 psi, and is a Build America Buy America compliant manufacturer.

Commercially, ACS operates a direct enterprise field-sales motion targeting infrastructure owners, operators, and government entities, with clients submitting requests for quotes via [email protected]. Revenue is project-based through fixed-price or cost-plus construction contracts, spanning greenfield facilities, modifications, and maintenance; pricing is custom and not publicly disclosed. The company differentiates through self-performance of civil, structural, mechanical, and electrical scopes under one contractor, reducing subcontractor markup and improving schedule control.

Name

Appellation

Legal name

Appellation Construction Services, LLC

Website

https://appellationconstruction.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

101–250 employees

Short description

Appellation Construction Services (ACS) is a Pennsylvania-based union industrial contractor providing integrated fabrication, ASME pressure-vessel construction, civil, mechanical, and electrical/instrumentation services to energy infrastructure, power generation, and government/commercial clients on a project-based contract basis.

Ownership category

akta.pro rank

Product category

Industrial Construction Services

NAICS

Nonresidential Building Construction (2362), Industrial Building Construction (23621)

SIC

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

akta.pro primary industry

Modular/Offsite General Contracting & Installation (IMAFAAAK)

Keywords

• Industrial construction services
• Modular fabrication
• Pressure vessels
• Electrical instrumentation
• Industrial maintenance

Headquarters

HQ city

Montoursville

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. Construction Contract Services: ACS generates revenue through fixed-price or cost-plus construction contracts for industrial infrastructure projects. Revenue is project-based, one-time per contract, with projects ranging from civil work to multi-discipline construction (mechanical, electrical, instrumentation). Projects include greenfield facilities, modifications, and maintenance contracts.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Appellation Construction Services is an industrial construction and fabrication contractor that designs, fabricates, and installs modular skids, pressure vessels, and bespoke mechanical systems. The company delivers civil, mechanical, electrical, instrumentation, painting, and maintenance services to energy, power generation, and government/commercial clients.

Product overview

Appellation Construction Services, LLC (ACS) is a full-service industrial construction contractor and maintenance/modification specialist offering engineered metal fabrication and construction services. The company operates a 85,000 square foot fabrication facility and provides a comprehensive portfolio organized into three service divisions: FABRICATION (Modular Skids, Pressure Vessels, Bespoke Solutions), CONSTRUCTION (Civil, Mechanical, Painting & Coating), and ELECTRICAL (Instrumentation & Electrical, Electrical Construction, Maintenance & Modification). These services are applied across three primary industry verticals: Energy Infrastructure (pipelines, facilities, new construction), Power Generation (RNG, Solar, Conventional), and Government & Commercial (Data Centers, Municipal Infrastructure, Utility Distribution).

Differentiator

Problem solved

Functional benefit

Products and services

• Modular skid fabrication Design, fabrication, and assembly of modular process skids for industrial and energy clients, executed at ACS's Williamsport, PA facility and delivered to site for installation.
• Pressure vessel fabrication and repair ASME-stamped fabrication of bespoke pressure vessels and NBIC-compliant repair services for industrial process plants.
• Bespoke industrial fabrication Custom-engineered fabrication of mechanical and structural components for industrial clients requiring tailored solutions.
• Civil construction Civil construction scope delivery for industrial and energy projects, executed as part of ACS's integrated multi-discipline model.
• Mechanical construction Mechanical construction services for industrial facilities, covering installation of process and mechanical systems.
• Painting and coating Industrial painting and protective coating application for constructed and maintained assets.
• Instrumentation and electrical services Industrial instrumentation and electrical installation and support for process plants and energy facilities.
• Electrical construction Industrial electrical construction services for new builds, expansions, and modifications in operating plants.
• Maintenance and modification services Industrial maintenance and modification services for operating energy and process facilities.

Quantifiable outcome

• Self-performing civil, structural, mechanical, and electrical work reduces subcontractor markup costs for clients
• +3 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eight partnerships are on record, tiered minor and core.

• Gold Shovel StandardminorOthersIndustry safety membership organization for construction companies focused on safe digging and damage prevention practices.
• NCMS (National Center for Manufacturing Sciences)minorOthersCross-industry technology consortium for manufacturing sciences research and development.
• MEA (Mechanical Contractors Association)minorOthersTrade association representing mechanical contractors. ACS is a union contractor with MEA membership.
• NECA (National Electrical Contractors Association)coreOthersTrade association for electrical contractors. ACS has received NECA Safety Excellence Award recognition and maintains active membership.
• VeriforceminorOthersContractor safety qualification and verification services for the energy and utilities sector.
• ISN (International Safety Verification)minorOthersContractor management platform providing safety and sustainability verification for major industrial clients.
• AvettaminorOthersProvider of contractor prequalification, safety management, and supply chain risk management services.
• Industrial Training ServicesminorOthersWorkforce training and development services for industrial and construction trades.

Scale indicators7 records

Recent moves5 records

Expansion highlights4 records

Market position

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

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 Appellation