Alcemy is a climate-tech company enabling low‑carbon cement and concrete at scale by using software and data science to reduce the clinker content in cement without compromising quality.
Cement production is responsible for about 8% of global CO₂ emissions, with ~80% of concrete’s emissions coming from cement and ~95% of cement’s emissions stemming from clinker. Reducing the clinker‑to‑cement ratio is therefore one of the most powerful levers to decarbonize the built environment, but it traditionally introduces quality volatility that the construction industry cannot accept.
Alcemy’s software solution continuously analyzes production data and material properties to give cement and concrete producers precise, real‑time control over their recipes and processes. This allows them to safely lower clinker content and produce cement and concrete with up to ~50% lower CO₂ emissions while keeping strength and performance within tight specifications. Their customers already avoid more than 80,000 tons of CO₂ per year, and several major producers (Dyckerhoff, Märker, Spenner) have launched new low‑carbon cements enabled by Alcemy.
In the broader landscape, Alcemy is complementary to both efficiency‑focused software/IoT players (e.g. CarbonRe, Jungle.ai) and novel material innovators (e.g. Brimstone, Sublime Systems, CarbonCure, CemVision, EcoLocked). While others focus on new chemistries or recycled inputs, Alcemy unlocks immediate emissions reductions in existing plants and materials by making low‑clinker formulations reliable and bankable.
The company’s impact potential is substantial: Alcemy targets 0.2 Gt of CO₂ avoided by 2030 and 1 Gt by 2040, aligned with AENU’s benchmark of at least 100 Mt CO₂ avoided or captured at scale per technology. With today’s materials alone, their approach can cut cement and concrete emissions roughly in half where adopted.
AENU highlights Alcemy’s strong evidence of impact (clinker reduction is a well‑validated decarbonization lever) and its impact additionality in a hard‑to‑abate, traditionally analogue industry. A key differentiator is Alcemy’s deep access to this conservative customer base, anchored in Co‑founder & CEO Leopold Spenner’s long family and professional history in the cement sector, combined with Co‑founder & CTO Robert Meyer’s and the team’s strong data science and software expertise. This blend of domain trust and technical excellence has earned Alcemy credibility across all roles in a cement plant.
Backed by a mission‑driven team, Alcemy is positioned to help transform cement and concrete production into a digitally optimized, significantly lower‑carbon industry at international scale. Their technology is already being used in high‑profile projects such as the Amazon Edge Tower in Berlin.
Alcemy raised a EUR 10M Series A round led by Galvanize Climate Solutions, with participation from AENU, BitStone Capital, MOMENI Ventures, E.R. Capital Holding, Tobias Nendel, the Flixbus founders, and existing investors EF, La Famiglia, Firstminute Capital, and LocalGlobe.
Alcemy is a software solution that helps cement and concrete producers significantly reduce CO2 emissions by enabling a lower clinker-to-cement ratio while maintaining strict quality standards.
Cement production is responsible for around 8% of global CO2 emissions, with ~80% of concrete’s emissions coming from cement and ~95% of cement’s emissions coming from clinker. Reducing the clinker content is therefore one of the most powerful levers for decarbonizing the built environment, but it traditionally introduces quality volatility that the construction industry cannot accept.
Alcemy addresses this by using data science and process control software to create a stable quality corridor for cement and concrete, allowing producers to safely reduce clinker content and achieve up to ~50% lower CO2 emissions with today’s materials. Their customers already avoid more than 80,000 tons of CO2 per year, and several major players (Dyckerhoff, Märker, Spenner) have launched new low‑carbon cements enabled by Alcemy.
Positioned between efficiency‑focused software/IoT solutions (e.g. CarbonRe, Jungle.ai) and novel material innovators (e.g. Brimstone, Sublime, CarbonCure, CemVision, EcoLocked), Alcemy is complementary to most of the ecosystem while offering a unique, software‑driven pathway to large‑scale emissions reduction in a hard‑to‑abate, conservative industry.
Their long‑term vision is to avoid 0.2 Gt of CO2 by 2030 and 1 Gt by 2040, aligning with AENU’s benchmark of 100 Mt CO2 avoided or captured at scale per technology. The company’s strong industry access is driven by CEO and co‑founder Leopold Spenner’s deep cement background, combined with CTO and co‑founder Robert Meyer’s data science expertise, enabling high credibility and adoption across traditional cement plants.
Backed by a €10M Series A led by Galvanize Climate Solutions and joined by AENU and other notable investors, Alcemy is scaling its mission to digitally transform a high‑emitting, analogue sector into a more climate‑friendly and data‑optimized global industry.
