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About Us

Transformer Manufacturing Association of America (TMAA) is a trade organization of power transformer manufacturing companies that have a primary business of manufacturing electrical power transformers in the United States as well as service suppliers, vendors, contractors and others who support the domestic transformer industry.

About: About


The Transformer Manufacturing Association of America (TMAA) provides members a decisive voice related to policy and regulatory issues.

  • Maintain relationships with policy makers and regulators. 

  • Develop and articulate positions that are important to TMAA.

  • Serve as an informational resource to TMAA members.

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Membership Options

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Getting Coffee

Founding Member

Entities or organizations who have (a) a corporate headquarters in North America; (b) a Chief Executive Officer (or similar title and role) based in the United States; (c) a majority of their electrical power transformers manufactured in the United States; and (d) been part of the informal coalition of companies working together prior to the formation of TMAA.

Industry Member

Entities or organizations who (a) have primary business of manufacturing electrical power transformers in the United States; or (b) act as service suppliers, vendors, contractors, parts provisioning or other role in support of transformer manufacturing; and/or (c) customers of the Prime Members.

Business Meeting
Conversation Between Colleagues

Ancillary Member

Entities, organizations, or individuals who are customers, vendors, suppliers in the transformer industry or other interested parties.

Friend of the Grid

Entities, organizations, or individuals who are interested in helping support the work of the association.

About: Membership
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