Ruth Gratzke

President of Siemens Smart Infrastructure U.S.,                                              CEO of Siemens Industry, Inc. 

Ruth Gratzke is President of Siemens Smart Infrastructure in the United States.  In this role, she leads operational and commercial activities for Siemens’ smart building, grid edge and energy infrastructure portfolio.

Comprised of five business units – Building Products, Digital Grid, Distribution Systems, Electrical Products and Regional Solutions and Services Americas – Siemens Smart Infrastructure delivers building IoT, automation, fire safety, security, energy, low and medium voltage and smart grid solutions as well as control components to the U.S. commercial, industrial and utility markets.



Most recently, Ruth served as the Head of Product and Systems Sales for Smart Infrastructure in the U.S., a role aligning the product and systems business units towards a platform of connected building and power distribution products and systems.

She returned to Siemens in 2019 after spending several years in executive management roles with General Electric and HUBBELL Inc.  Ruth originally joined Siemens in 1995 and relocated to the US in 1999 to lead the US-based steelmaking business.  Subsequently she held positions in Corporate Strategy and C-level sales, followed by general management roles in Building Technologies and Industrial Automation.

In addition to her business leadership responsibilities for Smart Infrastructure, Ruth is also the CEO of Siemens Industry, Inc., the legal Siemens business entity for Smart Infrastructure, Digital Industries and Large Drives Applications.



Masters Electrical Engineering, University of Erlangen-Nuremberg

About Siemens

Siemens Smart Infrastructure (SI) is shaping the market for intelligent, adaptive infrastructure for today and the future.  It addresses the pressing challenges of urbanization and climate change by connecting energy systems, buildings, and industries.  SI provides customers with a comprehensive end-to-end portfolio from a single source – with products, systems, solutions, and services from the point of power generation all the way to consumption.  With an increasingly digitalized ecosystem, it helps customers thrive and communities progress while contributing toward protecting the planet. SI creates environments that care.