About us
D-mat is a company for our sustainable future, which employs experts in various fields. We aim to advance one planet lifestyles; a resource-wise and low-carbon life. D-mat is specialised in carbon and material footprint calculations as well as researching and mainstreaming sustainable lifestyles. Our services are suitable for companies, government agencies, research institutions and social enterprises, among others.
michael@d-mat.fi
+358 40 541 2876 (FI)
+49 15 15040 2619 (DE)
CEO, FOUNDER
Michael Lettenmeier
Research, consultancy, speeches
Michael (Doctor of Arts, M.Sc., Environmental Science and Policy) is the chief executive officer of D-mat ltd and one of the leading experts of resource efficiency and dematerialisation in Finland. His consultancy, training and research activities in Germany and Finland cover sustainable consumption and production, measuring and monitoring carbon and material footprints, eco-efficiency, ecological rucksack and MIPS, and the sustainability of companies, households, municipalities and transport systems. Michael has conducted and supervised sustainability assessments and footprint calculations for numerous companies, supervised dozens of master’s theses, and produced and edited a large variety of publications in the field of sustainability and eco-efficiency.
jari@d-mat.fi
CHIEF DATA OFFICER
Jari Kolehmainen
Carbon footprint calculations, research
Jari's responsibilities include carbon footprint calculation, developing data models and data tools along with other data analysis. He is a Master of Social Sciences and a qualified software developer, whose multidisciplinary studies included environmental policy, atmospheric physics as well as data science. Previously, Jari has worked at the Finnish Environment Institute (SYKE) and at the Centre for Consumer Society Research at the University of Helsinki, where he conducted household intervention research that aimed to reduce energy consumption.
ursula@d-mat.fi
FOOTPRINT ANALYST
Ursula Rinta-Jouppi
Carbon footprint calculations, research, consulting
Ursula is working with carbon footprint calculations, calculators and data analysis especially with Jari. Ursula is also involved in helping to organise workshops and accelerators. Previously she has worked on projects such as My Carbon Action and the translation of the Climate Puzzle into Swedish. Ursula is studying Environmental and Food Economics at the University of Helsinki, with a minor in Mathematics and Computational Methods. In addition to her work at D-mat, Ursula also works part-time as a teacher.
kunigunde@d-mat.fi
SUSTAINABILITY SPECIALIST
Kunigunde Pispa
Sustainability reporting, consulting
Kunigunde primarily works with CSRD reporting and develops CSRD related services. She has studied supply chain management and sustainability at Hanken. Additionally, she is a vestonomist and has years of experience in the textile industry.
virvatuli@d-mat.fi
CONSULTANT
Virvatuli Uusimäki
Communications, marketing, consulting
Virvatuli works mainly with communication and marketing, with a particular focus on working on the EU 1.5° Lifestyles project. She is soon-to-be MS in Social Sciences. In her studies, she has focused on long-term societal change through economic and social history, as well as issues of sustainability. Additionally, Virvatuli is studying information technology at Haaga-Helia.
In addition, to get more deeply acquainted on the current topic or commission at hand, D-mat ltd employs other experts of relevant fields, consultants, educators and interns.