Business Overview: MasTec, Inc. (NYSE: MTZ)

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Executive Summary

MasTec is a North American infrastructure engineering and construction company with more than 95 years in business, building, installing, maintaining, and upgrading communications, energy, utility, and pipeline infrastructure. As of December 31, 2025, it employed about 36,000 people across 810 locations.

MasTec's 18-month estimated backlog reached $18.96 billion at year-end 2025, up sharply from $14.30 billion a year earlier, with roughly 74% expected to convert to revenue in 2026 and 47% of backlog coming from recurring master service agreements (MSAs).

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1. Core Business Model & How They Work

[ Customer need: build/upgrade network, power, or pipeline infrastructure ] ➡️ [ MasTec bids project OR works under MSA ]
   ➡️ [ Build / Install (new infrastructure) ] ➡️ [ Maintain, Upgrade & Other (recurring 24/7/365 service) ]

• Build + Install + Maintain model: MasTec combines large, lumpy new-build infrastructure projects with recurring maintenance, upgrade, and emergency-restoration work, which dampens project-to-project volatility.
• MSA-driven revenue: 44% of fiscal 2025 revenue came from master service agreements (up from 41% in 2024), providing a more predictable, non-discrete-project revenue base even though MSAs do not guarantee minimum volumes.
• Policy-linked demand: Clean Energy and Infrastructure segment revenue is tied to federal programs (IIJA, IRA) and affected by policy shifts such as the OBBBA's accelerated phaseout of certain clean-energy tax credits.

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2. Business Segments

                    ┌───────────────────────────┐
                    │        MasTec, Inc.          │
                    └───────────────┬──────────────┘
                                    │
      ┌───────────────┬─────────────┼─────────────┬───────────────┐
      ▼               ▼             ▼             ▼               ▼
┌───────────┐  ┌──────────────┐ ┌──────────┐ ┌──────────────┐ ┌─────────┐
│Communica-  │  │ Clean Energy  │ │ Power     │ │ Pipeline      │ │  Other   │
│tions       │  │ & Infra-      │ │ Delivery  │ │ Infrastructure│ │          │
│            │  │ structure     │ │           │ │               │ │          │
└───────────┘  └──────────────┘ └──────────┘ └──────────────┘ └─────────┘

Communications ($5,483M backlog)

Wireless/wireline/fiber network buildout, data-center interconnection, and install-to-the-home services.

Clean Energy and Infrastructure (~$4.7B revenue; $6,506M backlog)

Renewable and other power generation (wind, solar, biomass, natural gas, hydrogen, battery storage), heavy civil/industrial work, and environmental remediation.

Power Delivery ($5,579M backlog)

Transmission and distribution, substations, grid modernization, emergency storm restoration, and environmental compliance/planning.

Pipeline Infrastructure ($1,395M backlog)

Natural gas, water, and carbon-capture-sequestration pipelines, plus pipeline integrity services.

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3. Product Portfolio

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4. Competitive Landscape

MasTec does not name specific competitors, describing the industry as composed of national, regional, and local infrastructure construction firms. Its scale — 36,000 employees and 810 locations — differentiates it from the many smaller regional contractors that make up the bulk of the competitive landscape.

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5. Strategic Strengths & Risks

Strengths

• Scale and diversification: Four distinct infrastructure segments reduce dependence on any single end market or federal policy program.
• Record backlog: $18.96 billion of 18-month backlog, up 33% year-over-year, signals strong forward revenue visibility.
• MSA revenue base: 47% of backlog and 44% of 2025 revenue from recurring master service agreements provides a steadier foundation than pure project work.

Risks

1. Policy/funding risk: Changes to IIJA/IRA funding and the OBBBA's accelerated phaseout of clean-energy tax credits could reduce demand for solar and wind construction work.
2. Fixed-price contract risk: Cost-estimate accuracy and change-order recoverability directly affect project profitability.
3. Customer concentration and MSA non-commitment: Large communications, utility, and power customers can reduce work on short notice under MSAs with no minimum purchase commitments.
4. Wildfire/environmental liability: Elevated exposure in certain regions, with limited available insurance capacity.
5. Labor and acquisition integration: A unionized workforce with multiemployer pension liabilities, plus ongoing M&A integration risk.

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6. Financial Overview

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7. Summary Conclusion

MasTec has built meaningful scale advantages in U.S. infrastructure construction — spanning communications, clean energy, power delivery, and pipelines — that smaller regional competitors cannot easily replicate, reinforced by a record backlog and a growing base of recurring master-service-agreement revenue. The business remains exposed to the structural risks common to project-based construction: fixed-price execution risk, customer concentration, and now a meaningful policy overhang from the federal clean-energy tax credit phaseout that could reshape demand in its largest segment.