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We operate with a construction-first mindset, supported by in-house engineering and integrated field teams.

Louth Callan provides engineering, procurement, construction, and commissioning for utility-scale power infrastructure across the United States.

We build the infrastructure that keeps the grid running.

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The record

The Louth Callan team brings decades of experience.

Louth Callan’s team brings decades of experience delivering utility-scale power infrastructure across the United States, including complex solar, storage, substation, and high-voltage projects.

Figures represent the combined experience of Louth Callan’s team across prior roles and projects executed under the Louth Callan brand.

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6.4GW

Power infrastructure experience

$7.3B

Total project value placed in service

Nationwide

Scale

1GW

Storage placed in service by our team

Who we are

We Go Where Others Won’t.

Louth Callan was founded in 2019, in the hardest corners of New England — building through rocky ledge, harsh winters, unpredictable ground conditions, and site constraints with an industry-leading engineering team. Seven years later we are delivering the most complex power infrastructure projects East of the Mississippi with confidence and project completion certainty.

About Louth Callan

What we do

Six Markets. One Standard.

Engineering as a Service

Civil, structural, and electrical engineering support from the earliest project stages — constructability reviews, value engineering, alternative foundation solutions, and technical review tailored to project-specific requirements.

Utility Scale Solar

Full EPC on utility-scale PV — civil, foundations, racking, modules and MV collection, self-performed where the schedule depends on it.

Battery Storage

BESS from pad and containment through PCS, MV collection and commissioning support.

Transmission & Substations

Collector substations, switchyards, and the overhead and underground runs that tie them in.

Industrial Power

Behind-the-meter generation, distribution and tie-ins on live industrial sites.

Mission Critical Construction

Complete data center EPC — the facility and the high-voltage power infrastructure behind it.

How we deliver

Value engineered around constructability and cost.

No two projects are the same, so we don’t build them that way. Louth Callan designs around each site’s conditions, engineering requirements, schedule, and cost targets. In-house engineering and construction teams work as one, from preconstruction through commissioning, accountable to a single outcome. We measure engineering decisions against total installed cost and downstream impact, not isolated scope cost — connecting design to construction and controlling the critical path from preconstruction through COD.

Leadership

The people making decisions are directly involved in every project.

Louth Callan’s leadership team brings decades of experience building utility-scale power infrastructure, combined into one team on every project. Before mobilization, project delivery, construction, engineering, and executive leadership align in the same room — pressure-testing assumptions and surfacing risk before a single piece of equipment moves. That involvement carries through execution, backed by experienced construction managers, superintendents, engineers, and trade leadership on-site.

Meet the team
The Louth Callan leadership team outside the Enfield office.