Low-carbon cement manufacturer to open new production plant in Massachusetts

The new plant will manufacture the cement using a “true zero” approach without fossil fuels or decomposing limestone.

Sublime Systems has announced plans to open a new commercial manufacturing facility in Holyoke, Massachusetts. The company, which specializes in fossil-fuel-free drop-in replacements for traditional cement in concrete, selected the 16-acre location based in part on Holyoke’s robust hydroelectric resources. This resource will prove critical to Sublime’s fully electrified cement manufacturing process. The company was awarded a state tax credit from the Economic Development Incentive Program and local Tax Increment Financing from the City of Holyoke to offset property taxes. The facility, which is expected to begin commission in 2026, will produce tens of thousands of tons of low-carbon Sublime Cement per year. According to the company, the new plant will manufacture the cement using a “true zero” approach without fossil fuels or decomposing limestone.

In a recent quote, Sublime Systems CEO and Co-Founder Dr. Leah Ellis said, “The same qualities that made Holyoke a world-class industrial hub in the past perfectly position it to now be the home for clean tech manufacturing of the future. The Water Street site exemplifies that in its ample space, industrial zoning, access to renewable hydroelectricity, utilities, and even rail. We are grateful to the Garcia administration, City Council, and local community groups for welcoming us to Holyoke. We are committed to being a good neighbor that engages residents as we advance cement manufacturing technology that will clean up an industry that is one of today’s worst global emitters.”



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About the Author

Alexis Gajewski

Alexis Gajewski

Senior Content Strategist

Alexis Gajewski is a manufacturing writer and editor with nearly 20 years of experience covering the people, practices, and technologies that keep industrial facilities running. For more than a decade, she served as Senior Content Strategist for Plant Services, creating content for plant managers, engineers, and maintenance professionals on a variety of industrial topics.

During her tenure, Alexis worked to develop the brand’s digital strategy and helped launch and produce Great Question: A Manufacturing Podcast. She also created The Lighter Side of Manufacturing, a weekly blog that explored the inventive and sometimes humorous side of the industry. 

Alexis co-founded Influential Women in Manufacturing, a recognition program that honored 49 women in its first two years, earned an industry award for Best Product Launch, and received a proclamation from Illinois Governor JB Pritzker and a commendation from U.S. Senator Tammy Duckworth.

She also led newsroom operations and development at a large media company where she set editorial standards, developed training curriculum, and helped support AI adoption for more than 150 editors across 80+ brands spanning manufacturing, industrial processing, automation, and more.

Additionally, Alexis works as a freelance writer and editor, and her areas of interest include continuous improvement, the skilled workforce, and the role of emerging technology on the plant floor.

Connect with Alexis on LinkedIn

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