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§ Private Profile · 19 Kendall Ave, Sherborn, Massachusetts, 01770, United States
Construction services company specializing in welding shear connectors, bridge erection, and repair for infrastructure projects in New England.
Founded in 1976, Composite Company Inc. is a specialized construction firm based in Sherborn, Massachusetts, that focuses on welding shear connectors for bridges and buildings throughout Boston and the broader New England region. The organization has strategically expanded its core service offerings to include comprehensive bridge erection and structural repair services, completing multiple large-scale infrastructure projects across Massachusetts and Rhode Island. To ensure quality and maintain strict regulatory compliance, the enterprise holds an active certification from the American Institute of Steel Construction for structural steel welding. Operating primarily through direct client contracts, the business executes high-volume stud welding for major infrastructure initiatives without publicly disclosing specific financial metrics, revenue figures, or employee counts. As a dedicated contractor, the entity continues to support regional structural engineering efforts by providing specialized welding and bridge construction services to the infrastructure sector.
Composite has raised $62.0M across 2 funding rounds.
Composite has raised $62.0M in total across 2 funding rounds.
Composite has raised $62.0M in total across 2 funding rounds.
Composite's investors include NFDG, Anthropic, Menlo Ventures, C2 Investment, Mei Z..
Composite has raised $62.0M across 2 funding rounds. Most recently, it raised $56.0M Seed in September 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Sep 30, 2025 | $56M Seed | NFDG | Anthropic, Menlo Ventures | Announced |
| Sep 1, 2025 | $6M Seed | — | C2 Investment, MEI Z. | Announced |
Composite Technology Corporation (CTC) develops, produces, and markets innovative energy-efficient products and renewable energy projects for the electrical utility industry, focusing on advanced composite materials to modernize electrical grid systems.[1] Its principal subsidiary, CTC Cable Corporation, offers the patented ACCC® conductor for transmission and distribution power lines, which boosts electrical capacity, reduces line losses and greenhouse gas emissions, enhances reliability, and delivers economic benefits compared to traditional conductors.[1]
CTC serves electrical utilities facing congested grid challenges, solving problems like inefficiency and environmental impact through proprietary technologies that enable higher throughput and sustainability.[1] While specific growth metrics are unavailable, the company's emphasis on patented solutions positions it for momentum in the renewable energy transition.[1]
Composite Technology Corporation's history centers on pioneering advanced composite materials for energy infrastructure, though exact founding details are not specified in available sources.[1][6] The company evolved to prioritize grid modernization, launching key innovations like the ACCC® conductor via its CTC Cable Corporation subsidiary, which leverages composite cores for superior performance in overhead transmission lines.[1]
Pivotal moments include developing patented technologies that address core utility pain points, such as increasing capacity without new infrastructure and cutting emissions, establishing CTC as a contributor to sustainable energy projects amid growing environmental demands.[1]
CTC rides the global shift to renewable energy and grid modernization, where aging infrastructure struggles with rising demand from electrification and renewables.[1] Timing aligns with urgent needs to cut emissions and enhance capacity amid climate goals and policy incentives for efficient transmission.
Market forces like utility investments in smart grids and composites favor CTC, as its ACCC® conductors enable upgrades without massive new builds, influencing the ecosystem by accelerating sustainable power delivery and supporting economic growth in clean tech.[1]
CTC is poised to expand as grids worldwide upgrade for net-zero targets, with ACCC® conductors gaining traction in high-demand regions. Emerging trends like AI-driven energy management and extreme weather resilience will shape its path, potentially amplifying influence through more utility adoptions and composites R&D.
Tying back to its core strength in energy-efficient composites, CTC stands ready to power the sustainable grid revolution.[1]