We are
Cemvisionaries

At Cemvision, our core values are the foundation of everything we do. We champion sustainability by truly walking the talk, striving for a future where construction and sustainability go hand in hand.

We are not moving the needle - we are changing the game.

Our Vision

A future built on a green foundation

Cemvision is on a mission to re-invent cement and radically improve how the world is built.

Our team of experts, researchers, supply-chain specialists, creatives, and innovators is relentless in our pursuit of turning climate challenges into solutions — and customers into climate leaders

2028

First industrial plant online with a capacity of 500 kton annually.

10+

Partnerships with well-renowned academia and research institutions.

100+

Years of experience in the cement and concrete industry.

A journey of innovation
and growth

2019

Cemvision is founded

2020

Pilot scale production

First ready mix project

R&D product and production

2023

Demo scale production Capacity 4 ktpa

Partnership with LKAB

World's first electrification pilot

2024

Partnerships with Vattenfall, JM, Skanska, etc

Pilot of valorizing slags to GBS grade SCM

UK market entry 
with first commercial deployment

C-suite and team buildout

2025

Industrial scale 
production with partner

Site selected for Plant #1

Accepted by Swedish standards committee

Mega trials with MAG7

Trials with 20+ Companies

2028

Commissioning Plant #1

Proudly backed by:

The Team

The Cemvisionaries

We are a team of dedicated professionals with diverse backgrounds and expertise, all united by a shared vision for a sustainable future. Our team is committed to driving innovation and making a positive impact on the world.

Management

Oscar Hållén
CEO
Oscar Hållén
CEO

LL.M. Expertise in growth strategies that scale teams, from industries including fintech, public affairs, and legal and regulatory. Ex: Klarna, White & Case LLP.

Claes Kollberg
Chief Technical Officer
Claes Kollberg
Chief Technical Officer

Claes is a Breakthrough Energy Fellow. MSc in Mechanical Engineering, expertise in cement manufacturing, sustainability, and electrification. Ex: Heidelberg Materials, Twiga Cement, Hybrit.

Paul Sandberg
Product and Innovation
Paul Sandberg
Product and Innovation

Paul is a Breakthrough Innovator fellow, working remotely from US, South Africa and Sweden. PhD Building Materials, expertise in innovation, cement hydration chemistry, cement products, and standards. Ex: Cementa, WR Grace, Carboncure, Calmetrix.

Michael Niska
Chief Financial Officer
Michael Niska
Chief Financial Officer

MSc in Business Administration and Economics. 15+ years in the financial spectra in the transport and climate tech space driving business excellence processes. Switched from Swedish core industry to the startup space in 2017 and then to green transition projects from 2022. Ex Aira, Scania.

Hanna Renlund Westerberg
Chief Operation Officer
Hanna Renlund Westerberg
Chief Operation Officer

MSc in Business Administration and Economics. Experienced C-suite business leader from the climate tech and media industry specialized in scaling commercial and industrial organizations. Ex: Northvolt, MTG.

Petter Tronstad
Chief Expansion Officer
Petter Tronstad
Chief Expansion Officer

CExO. Master in International Business/Authorized Financial Analyst. Leadership experience in seaborne shipping, logistics, strategy, partnerships and finance. Ex Star Shipping, KGJ Cement and JT Cement.

Commercial

Douglas Uhno
Key Account Manager
Douglas Uhno
Key Account Manager

MSc Master of Science in Engineering. Began in supply chain and industrialization, switching over to business development within the battery and clean tech industry. Expertise in B2B sales and strategic partnerships, with a strong focus on innovation and energy sectors.Ex: Northvolt.

Mark Davey
Technical Sales Manager UK
Mark Davey
Technical Sales Manager UK

43 years of experience in the cement and concrete industry, primarily working with cement producers in the UK, Ireland, and the Nordic region to develop additive solutions for current and future cement types. Ex Mapei C-ADD, Grace Cement Additives & Tarmac.

Markus Hagman
Technical Sales Manager Sweden
Markus Hagman
Technical Sales Manager Sweden

Former concrete worker with extensive experience in reinforcement and castings. Previous roles include operations manager at a concrete factory, managing customer contacts, logistics, and maintenance planning. 18 years of experience in and around the concrete industry. Ex: HMB construction, Peab, Skanska

Marius Hojenski
Account Manager
Marius Hojenski
Account Manager

B.Sc. Mechanical Engineering and M.Sc. Business & Economics. Marius has experience working in Commercial and Business Operations, both at early stage startups as well as scale-ups. Ex. Northolt, Lio

Emil Sundestrand
Project Coordinator
Emil Sundestrand
Project Coordinator

MSc in Industrial Engineering and Management from LTH and the University of Tokyo. Background in strategy consulting and climate tech startups. Ex: McKinsey & Co, Monitor Deloitte, Roam Electric, Asker Healthcare Group, Cirkulär, Ingka Group

Sten Rodenstam
Technical Sales Manager
Sten Rodenstam
Technical Sales Manager

With a background in the construction industry for over 25 years, Sten built a career in strategic operational skills in project management, technical sales, and marketing, mainly in Sweden but also in Scandinavia and the USA.Ex: Nordkalk, Sika, Sweco

Marketing/Communications

Victor Melander
PR/Comms/Public affairs
Victor Melander
PR/Comms/Public affairs

With a background in journalism, Victor has built a career in communication, holding key leadership roles in the industry. Expertise in PR, PA and Corporate Communications, with a strong focus on innovation and growth in dynamic industries. Ex:, Instabox, NetEnt, Dagens Nyheter.

Linnea Palmertz
Market Analyst
Linnea Palmertz
Market Analyst

MSc in Economics: Management of Innovation and Business Development. Background in strategy consulting and climate tech mobility startups. Ex: Desfier, GreenMobility, Voi.

Finance/HR

Ida Lavmo
General Counsel
Ida Lavmo
General Counsel

LL.M. Ida has nearly a decade of leadership and advisory experience from both industry and private practice, specializing in the climate and growth space. Ex: Stegra, Mannheimer Swartling, Altor.

Emanuel Onoszko
Project Lead
Emanuel Onoszko
Project Lead

MSc in Industrial Engineering and Management. Background in investment banking and strategy consulting from working in corporate finance, M&A and management consulting. Ex: Carlsquare, Cartina.

Nicolai Slotte
Project and Grant Lead
Nicolai Slotte
Project and Grant Lead

MSc in European Studies. Extensive experience in Public Funding. Ex: Royal Institute of Technology KTH, Sustainable Innovation, Polar Capacity.

Pedro Cardoso
Business Controller
Pedro Cardoso
Business Controller

Pedro, a Brazilian living in Stockholm, has vast experience in FP&A, Treasury, Controllership, and M&A from several industries, including cement—BSc in Economics and Specialization in Finance Management. Ex: Holcim, Stellantis, Sandvik.

Sara Brodin
CXO Assistant
Sara Brodin
CXO Assistant

MSc International Conflict. Background in political science, project management, and business operations. Ex: The Confederation of the Norden Associations, JUC, Klarna.

Expansion and Supply

Claudio Barrera
Program Director Global Expansion
Claudio Barrera
Program Director Global Expansion

With over 30 years of international experience leading major industrial projects and operations across Europe and Asia. Career spanning global corporates and climate tech scale-ups, with expertise in program management and industrialization. Has overseen large-scale budgets and pioneered sustainability and circular economy initiatives. Ex: Northvolt, Stellantis, Alstom.

Hedvig Axberg
Technical Lead and Supply Chain
Hedvig Axberg
Technical Lead and Supply Chain

MSc in Mechanical Engineering. She has extensive experience in Operations, Supply Chain Management, and Management Consulting. Ex: Centigo, Rehband, Haglöfs.

Nicola Steinle
Project Procurement Lead
Nicola Steinle
Project Procurement Lead

MSc in Business Administration and Diplom Kauffrau. Nicola has 20+ years experience as senior procurement and project management leader in international technical and infrastructure-intensive environments. Ex Svenska Kraftnät, OX2, Eolus

Tech and Engineering

Arvid Engman
Project Lead
Arvid Engman
Project Lead

BSc in Mechanical Engineering. Background in cement manufacturing, maintenance and project. Ex: Heidelberg Materials Cement.

Mats Åhlin
Technical Project Specialist
Mats Åhlin
Technical Project Specialist

MSc in Materials Science. Background in research, production, and management within the steel, mining, and construction equipment manufacturing industries. Ex: Outokumpu, Erasteel, Atlas Copco, Epiroc.

Ulrik Henriksson
Technical Project Lead
Ulrik Henriksson
Technical Project Lead

MSc in Mechanical Engineering. Background in cement manufacturing, cement plant production, and maintenance. Ex: Heidelberg Materials, Twiga Cement.

Balasan Khachadoorian
Technical Project Specialist
Balasan Khachadoorian
Technical Project Specialist

Licentiate degree in civil engineering from Chalmers. Background as a supervisor, plant manager, and technical specialist in concrete in prefabricated concrete factories and concrete batching plants.Ex: Zublin, Skanska prefab, Kynningsrud prefab, Skanska ready mix

Mikolaj Ostrowski
Process Engineer
Mikolaj Ostrowski
Process Engineer

PhD Engineer, 15 years of experience at the scientific institute of building materials, specializing in clinkers, cements, and concrete. Author of several publications on low-carbon cement properties and process production.Ex: Lukasiewicz Research Network-Institute of Ceramics and Building Materials

Our Tech

Next generation of cement. Today.

Cemvision is decarbonizing cement with a full-stack approach. We've modernized cement chemistry to use alternative raw materials and are developing rotary kilns using non-fossil fuels like Hydrogen. We bypass virgin limestone, using low-value residual products as feedstock and cement replacement.

Binders

Discover the future of sustainable binders

Our binders redefine strength and sustainability, setting new benchmarks for construction.

Read more

Electrification

Powering progress with clean energy solutions

Unlocking fully fossil-free, high-performance cement clinker at scale.

Read more

Slag Upcycling

Turning industrial waste into next-generation cement feedstock

Slag valorization transforms byproducts into green construction materials, reducing waste.

Read more