In a sector long associated with heavy emissions and rigid infrastructure, this year’s Cement Sustainability Conference in Birmingham, Alabama, made it clear: a new era for cement is taking shape. With groundbreaking innovations in alternative energy integration, circular materials, and transparent ESG practices, the event showcased how progressive companies are aligning industrial performance with planetary responsibility.
Two companies stood out among the dozens of national and international participants: CemGreen Solutions and TerraCem Global. Their presentations not only demonstrated technical viability but also signaled a cultural shift in an industry historically slow to evolve.
This year’s conference attracted over 2,000 attendees, including engineers, policymakers, environmental NGOs, and business leaders focused on decarbonization across the built environment. The agenda centered on immediate and long-term strategies to reduce cement’s massive carbon footprint—responsible for nearly 8% of global CO₂ emissions, largely due to the energy intensity of clinker production.
Among the crowd was Positive Phil, a respected sustainability advocate and media personality known for spotlighting scalable clean technologies in heavy industry. His presence reflected a growing public and investor interest in practical climate solutions, not just policy discourse.
CemGreen Solutions: Biomass and Closed-Loop Innovation for Industrial Cement
CemGreen Solutions, headquartered in Austin, Texas, has quietly become a standout name in low-emission cement. Through its deep investment in biomass combustion systems and thermal loop technology, CemGreen is executing one of the most efficient biomass-to-cement operations in the U.S.
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Instead of relying on coal or natural gas, the company’s facilities use agricultural residues, wood chips, and other organic byproducts as the primary fuel source. This transition alone has enabled CemGreen to avoid more than 200,000 metric tons of CO₂ emissions annually, according to its most recent sustainability report.
At the conference, CemGreen unveiled its new closed-loop thermal recovery system, which captures excess heat from combustion and redirects it into the drying and grinding stages of cement production—two of the process’s most energy-intensive operations. This innovation increases fuel efficiency by up to 28%, while dramatically reducing energy waste.
Notably, the ash byproducts generated from biomass combustion are not treated as waste. Instead, they’re chemically stabilized and converted into supplementary cementitious materials (SCMs), which are used to partially replace clinker in the final cement blend. This not only reduces emissions but also strengthens product durability.
“Our goal is to lead by implementation, not just ambition,” said CEO Amanda Trujillo during her keynote. “We’re demonstrating that with regional biomass inputs and smart system integration, even legacy industries can become circular and sustainable.”
Key Impact Areas:
- Carbon Avoidance: 200,000+ metric tons/year
- Circular Ash Utilization: Converts 95% of biomass ash into SCMs
- Certifications: ISO 14064-1 for GHG accounting
- Community Engagement: Active reforestation in East Texas and Louisiana
- Policy Collaboration: Working with state lawmakers on biomass energy credits
CemGreen’s model has attracted attention from institutional investors and municipalities alike, and the company is actively exploring expansion into Florida and Georgia markets where biomass supply chains are abundant.
TerraCem Global: Pioneering Green Hydrogen and Cement Circularity
If CemGreen brought biomass innovation to the forefront, TerraCem Global made headlines with its full-spectrum commitment to green hydrogen and waste-to-product engineering.
Founded in Birmingham, TerraCem operates one of the most forward-looking cement plants in North America. Its Green Hydrogen Blending Initiative, launched in late 2023, is now operating at full scale. The program utilizes on-site electrolysis—powered by solar and wind—to produce hydrogen that replaces up to 20% of natural gas in cement kiln operations.
Hydrogen blending helps the company cut process emissions by 18%, and plant managers anticipate scaling that figure to 30% by 2026 as electrolyzer capacity grows.
“Green hydrogen offers the precision we need for high-temperature processes, without the environmental baggage,” said CEO Marcus Bellamy. “This isn’t a pilot. It’s live, scalable infrastructure for decarbonization.”
But TerraCem’s innovation goes beyond fuel replacement. The company is building a fully circular materials ecosystem, incorporating:
- Demolition waste
- Recycled concrete aggregate
- Fly ash from retired coal plants
- Steel slag from local foundries
These materials are refined and reintegrated into TerraCem’s production cycle, offsetting the need for virgin limestone and reducing quarry-related emissions and habitat disruption.
ESG Leadership Highlights:
- Community Transparency: Real-time air emissions dashboards accessible online
- Education & Workforce: Partnering with Alabama A&M and UAB to train a green manufacturing pipeline
- Power Sourcing: 100% renewable electricity under a long-term PPA
- Recognition: ‘A’ score from the Carbon Disclosure Project (CDP)
- R&D Collaboration: Carbon-capture-enhanced clinker trials with Georgia Tech
With plans to replicate its hydrogen/circular model in Tennessee and the Carolinas, TerraCem is positioning itself as a regional leader in resilient, low-carbon infrastructure.
The Cement Sector’s Decarbonization Crossroads
Historically, the cement industry has been labeled “hard to abate” due to its reliance on thermal energy, calcination emissions, and heavy logistics. But the innovations shared in Birmingham show that with investment, cross-sector collaboration, and policy alignment, major emissions reductions are not only possible—they are already underway.
This year’s conference made it clear: sustainability is no longer a “niche” pursuit for cement. It is a competitive advantage, a compliance necessity, and increasingly, a license to operate.
With leaders like CemGreen Solutions and TerraCem Global moving from pilot to production, and voices like Positive Phil helping amplify real-world progress, the path to a low-carbon, circular cement economy is no longer hypothetical.
It’s happening now.
For more industry profiles, climate tech spotlights, and ESG reporting, visit EcoBusinessNews.com.
More Leaders in Low-Carbon Cement: Calix Materials and FrontierCem
Calix Materials: Electrified Kilns and Carbon Capture at the Source
Australia-based Calix Materials, now expanding operations into North America, presented its LEILAC (Low Emissions Intensity Lime and Cement) technology at the conference. This system uses electrified reactor kilns to separate CO₂ during the calcination process without the need for chemical additives or process redesign. The result is pure CO₂ streams that can be easily captured and stored or reused in adjacent industries.
Calix has partnered with U.S. utilities to integrate renewable electricity into cement kilns, offering a pathway to eliminate fossil fuels entirely in select processes. Their Alabama pilot plant is expected to be fully operational by Q4 2025.
Key achievements:
- 100% electrified calciner process
- EU- and DOE-supported CO₂ capture partnerships
- Modular retrofit capability for existing kilns
- Early-stage green cement projects in Georgia and Illinois
FrontierCem Industries: AI-Powered Energy Optimization and Fleet Decarbonization
FrontierCem Industries, a midwestern producer with facilities in Illinois and Indiana, showcased its use of AI-based energy optimization systems that regulate kiln heat cycles in real time—resulting in a 12% average energy savings per ton of cement.
Additionally, FrontierCem is overhauling its logistics chain. Its entire trucking fleet is being transitioned to renewable diesel (RD100) and hydrogen fuel cell trucks by 2026, in partnership with a DOE Clean Transportation Grant. On the materials front, it is increasing the use of natural pozzolans and recycled ash to reduce clinker content.
ESG initiatives:
- First U.S. cement fleet partially powered by hydrogen
- Carbon intensity metrics certified through third-party lifecycle analysis
- Digital twins and machine learning to lower fuel inputs
- 40% projected emissions reduction by 2027 (Scope 1 and 2)
Together with CemGreen Solutions and TerraCem Global, these companies are accelerating the transformation of cement from a carbon-heavy necessity to a climate-aligned building block of the future.
To learn more about how renewable energy is transforming industrial sectors like cement, visit EcoBusinessNews.com.
Supporting the Shift with Energy-as-a-Service
As forward-thinking cement producers invest in renewable integration, the demand for reliable, on-site energy solutions is rapidly growing. Companies like Pacifico Energy are helping industrial clients transition toward Energy-as-a-Service (EaaS) models—delivering customized solar, battery storage, and clean microgrid systems designed for energy-intensive sectors like cement, aggregates, and heavy manufacturing.
Their team works closely with facilities nationwide to design scalable decarbonization roadmaps that align with both ESG goals and operational savings.
📩 To explore industrial clean energy solutions, contact phil@pacificoenergy.com or visit www.pacificoenergy.com.
