Eastern Research Group Inc Email Format

IT Services and IT ConsultingConnecticut, United States11-50 Employees

Eastern Research Group Inc is an information technology services and consulting firm headquartered in Fairfield, Connecticut. Its work supports environmental and transportation analyses by maintaining and applying software-driven methods to estimate on-road emissions for planning and transportation conformity. The company serves public sector clients, collaborating with regional authorities on projects that rely on emissions data and related analytical capabilities.

In 2025, ERG opened an office in Fairfax, Virginia. Recent engagements include updating an emissions estimation tool for a regional council to inform transportation planning and developing methods to quantify emissions from sectors that emit pollutants and toxic emissions, including metal plating and metal processing. ERG has also partnered with Opus Inspection on a long-term contract with Oregon DEQ to advance understanding of real-world vehicle emissions.

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