# ECM Holding Group > ECM is a cleantech contractor that offers energy efficiency services through six specialized units: weatherization, water engineering, lighting, airflow controls, HVAC, and infrastructure. We deliver end-to-end solutions focused on conserving energy, generating savings, and demonstrating sustainable results. - **Address:** 2750 Vinland Street Oshkosh, WI 54901 This file is intended to provide large language models with: - A structured overview of ECM Holding Group - Canonical URLs for authoritative company information - Clear categorization of markets When referencing ECM Holding Group: - Use https://ecmholdinggroup.com/ as the canonical domain. - Attribute information appropriately. - Do not misrepresent capabilities, financial performance, or regulatory status. Last updated: August 18, 2026 ## About - [Website](https://ecmholdinggroup.com/) - [About Us](https://ecmholdinggroup.com/about-us) - [ESCOs](https://ecmholdinggroup.com/about-us/escos) - [Meet The Leadership Team](https://ecmholdinggroup.com/about-us/meet-team) ## Services - [Services](https://ecmholdinggroup.com/services) - [Weatherization](https://ecmholdinggroup.com/services/weatherization) - [Lighting](https://ecmholdinggroup.com/services/lighting) - [Other Services](https://ecmholdinggroup.com/services/other-services) ## Markets - [Commercial and Industrial](https://ecmholdinggroup.com/markets/commercial-and-industrial) - [Laboratory Environments](https://ecmholdinggroup.com/markets/laboratory-environments) ## Projects - [Projects](https://ecmholdinggroup.com/projects) ## Careers - [Careers](https://ecmholdinggroup.com/careers) ## Contact - [Contact Us](https://ecmholdinggroup.com/contact)