About | A. DeLeo Construction Company, Inc.

1994

Operating
Since

Technical Identity

Underground Utility & Civil Contractors — Built for the Energy Sector

A. DeLeo Construction Company has operated as a union-affiliated underground utility and civil contractor in the Northeast energy sector since 1994 — performing ductbank systems, conduit installation, vault and manhole construction, substation civil work, and heavy civil site development for investor-owned utilities, fuel terminal operators, and industrial energy facility owners. Civil and underground electrical utility scopes are self-performed under one coordinated operation.

DeLeo holds a 5-year underground-utility framework contract (2024–2029) with United Illuminating (Avangrid) and has performed underground electric utility construction for Eversource Energy across Connecticut, Massachusetts, and Rhode Island. In the industrial energy sector, DeLeo has executed civil and utility construction for Gulf Oil and Buckeye Partners at fuel terminal and midstream energy sites — secondary containment systems, tank farm foundations, oil-water separators, and vapor recovery infrastructure.

Al DeLeo III has directed the company since founding and remains directly involved in client relationships and field operations.

1994 Established

100+ LIUNA Employees

5 Northeast States

What We Execute

What DeLeo Executes

All scopes are self-performed by DeLeo crews — no subcontracting of primary scope.

Underground Electrical Infrastructure

Concrete-encased ductbank systems, conduit installation and routing, cable pathways for distribution networks. Work is performed within active utility corridors and adjacent to energized infrastructure. This is DeLeo's primary scope and the basis of its IOU client relationships.

Utility Structures

Precast and cast-in-place vaults, manholes, and access chambers — installed to utility specifications with conduit entry, sump, and frame/cover integration. Structure placement is coordinated with ductbank geometry and pull-point spacing requirements.

Substation Civil & System Integration

Conduit entry and ductbank tie-ins at substation perimeters, trenching within station yards under utility protection protocols, and coordination with protection engineers on sequencing and outage windows. Execution in active electrical environments under strict access controls.

Heavy Civil for Energy Facilities

Site preparation, structural concrete (equipment pads, transformer foundations), underground utility installation, access road construction, and facility drainage systems for substations, fuel terminals, and industrial energy sites — scoped to engineering tolerances, not general grading standards.

Storm, Sewer & Utility Infrastructure

Storm drainage, sewer, and underground utility installation integrated into site development, utility, and energy-sector projects. Trenching, pipe installation, structure placement, and tie-in to existing systems — performed across all soil conditions in CT, NY, NJ, MA, and RI.

Emergency Response

24/7 on-call capability for utility clients. Underground electrical failures, storm-related infrastructure damage, and urgent civil utility failures addressed with rapid crew mobilization — executed under the same safety protocols as planned work, without shortcuts.

Leadership

Direct Ownership. Direct Accountability.

Family-owned. Al DeLeo III is reachable on every contract.

AD

Albert W. "Al" DeLeo III

President & Owner

Al DeLeo III founded A. DeLeo Construction Company in New Haven, CT in 1994 and has led it since — directing field operations, client relationships, and contract execution across the Northeast energy infrastructure market. DeLeo has executed underground electrical and civil construction for United Illuminating, Eversource Energy, Gulf Oil, and Buckeye Partners at utility, fuel terminal, and midstream energy sites across the region.

When a utility construction manager has a question on a running job, they reach Al or someone with direct knowledge of the contract. That accountability structure is why DeLeo's client relationships carry across contract cycles.

30+ years directing civil & utility construction operations

Privately held, family-owned — no corporate intermediary layer

Headquartered in New Haven, CT · Operating CT, NY, NJ, MA, RI

Company Profile

Operational Facts

Established 1994 — New Haven, CT

Company Type Privately Held, Family-Owned

President Albert W. "Al" DeLeo III

Workforce 51–200 LIUNA Union-Affiliated

Primary Market Energy Sector — Investor-Owned Utilities

Core Scope Underground Electrical Infrastructure & Heavy Civil

Service Area CT, NY, NJ, MA, RI

Active Contract UI / Avangrid Framework — 2024–2029

Safety Standard "Think Smart, Think Safety" — OSHA compliant

Emergency Response 24/7 On-Call for Contracted Utility Clients

Client Relationships

Who Contracts DeLeo

DeLeo's contracted client base: investor-owned utilities, energy distribution and fuel storage operators, and industrial energy facility owners. Contract relationships with these clients are sustained through consistent field execution, schedule reliability, and safety compliance — tracked as performance metrics across contract cycles.

United Illuminating (Avangrid) Underground electric framework contract · Connecticut statewide

Eversource Energy Underground electric utility construction and grid infrastructure · CT, MA, RI

Gulf Oil & Fuel Terminal Operators Fuel terminal civil scope — tank farm foundations, oil-water separators, secondary containment, access infrastructure

Buckeye Partners & Midstream Energy Pipeline and midstream site civil construction — access roads, utility installation, environmental compliance infrastructure

CT Municipalities & Developers Storm, sewer & site civil infrastructure in support of development and utility projects

Safety Culture

Think Smart, Think Safety

Standard practice on every project: utility locates verified before any trench opens, protection plans established before any crew enters a restricted zone, trench shoring installed to OSHA standards, confined-space procedures on every vault and manhole entry.

Utility Locates

Completed and verified before any excavation — including coordination with the utility's mapping and field locating resources in active distribution corridors.

Energized-Environment Protocols

Site-specific protection plans established with utility protection engineers before crew entry into any restricted zone. Minimum-approach-distance compliance on every energized-adjacent project.

Confined-Space and Trench Safety

OSHA confined-space entry procedures on every vault and manhole access. Trench shoring installed and inspected before crew entry.

Think Smart,
Think Safety

Work With DeLeo

Discuss Your Underground Utility or Civil Scope

Contact DeLeo to discuss scope. Proposals are based on what the project requires in the field — no oversell, no scope assumptions.

Contact DeLeo View Services

Who We Are