Sustainable. Economical. Independent.
A family-run business with a lot of entrepreneurial spirit and a clear understanding of values. What sets us apart are our employees: around 60 members of staff bring together experience, competence and deep expertise in the field of renewable energies. Many of us have been involved in the industry for years – with passion and a commitment to doing things really well. We have grown steadily – not quickly, but intelligently and with enjoyment in what we do.
The board of directors
Uwe Leonhardt and Heiko Roß are guiding UMaAG reliably and with foresight towards a successful future. Their combined experience, coupled with passion and ambition, drives the continuous expansion of renewable energies – not only in the area of wind energy but also in biomass, solar, and ecological district solutions. With holistic energy concepts for cities, towns, and municipalities, they significantly contribute to the sustainable success of the medium-sized company.
Diplom-Kaufmann Uwe Leonhardt, founder and CEO of UMaAG, is responsible for the implementation of large-scale projects, including financing and investments. In addition, he is actively involved in political communication and association work in the field of renewable energies at the local, regional, state, and federal levels.
As a qualified engineer, Heiko Roß has been responsible for energy concepts for municipalities, as well as biomass, hydrogen, and solar projects since 2021. As a specialist in storage and everything related to the grid, he is also involved in political communication and represents UMaAG at many industry and political events.
We are UMaAG
The world is changing – and so are we. Not because we have to, but because we are convinced that standing still is not an option.
At our company, it's not the easiest path that counts, but the best. We think ahead, take responsibility, and face every challenge with the aim of finding solutions. No: Why isn't it working? but How can it work?
We demand a lot – from ourselves and from everyone who works with us. But we also nurture. Because true quality only emerges where people are allowed and want to grow.
What unites us is not uniformity, but a common goal: to get better – every day.
Our guiding principle here is clear: Less is more. Simple is better. Digital is faster.
And we ask ourselves two questions with everything we do:
Does it serve the project? And would we make the same decision if it were our own money?
In the end, it's about more than just projects for us. Our goal: We want to make a real contribution to a modern society that thinks ahead. For a world worth living in for everyone.
Our project development team is driving the planning and construction of wind turbines.
As a company, we stand for sustainability, innovation, and social responsibility – and for an open, respectful democracy that thrives on participation.
Our Expertise
For over 25 years, we have been realising sustainable energy projects in Germany – from wind, solar, and biomass plants to sustainable districts. Our references stand for innovation and out-of-the-box thinking, technical quality, economic stability, and cooperative partnerships with municipalities, landowners, and investors. Each project is an example of how we implement the energy transition regionally, transparently, and with economic success.
With almost 400 wind turbines in over 50 wind farms, UMaAG is one of the driving innovative forces in the development and implementation of renewable energy concepts in Germany.
The Umwelt Management AG UMaAG has been active in the field of renewable energy projects in the German market since 1998.
The energy transition is a power transition. At the same time, we need solutions for heating and mobility.
Our e-paper „Heat Transition in Rural Areas“ shows how innovative approaches such as local heating networks, seasonal thermal storage, and photovoltaic-thermal systems are already being successfully implemented today – and what opportunities this offers for municipalities and citizens.
With innovation, technology, and responsibility towards a sustainable energy supply
The town of Ilsenburg (Harz) and Umwelt Management AG (UMaAG) have, together with HarzEnergie GmbH & Co. KG, launched a pioneering project intended to supply Ilsenburg with regionally generated heat and electricity.
With innovation, technology, and responsibility towards a sustainable energy supply
We have built 32 apartments (60sqm – 150sqm) in the Quartier am Medembogen.
UMaAG (Umwelt Management AG) can draw on over 20 years of experience in operating wind turbines and ensures the best possible results with a reliable operations management team.
The Umwelt Management AG UMaAG has been active in the field of renewable energy projects in the German market since 1998.
Projects and Key Data
Umwelt Management AG (UMaAG) has been active in the renewable energy project sector in the German market since 1998. Now, over 50 employees work at two locations: Cuxhaven and Oldenburg. UMaAG has planned and constructed 394 wind turbines in 50 wind farms. Internationally, 4 wind energy projects in Poland are nearing implementation. Furthermore, UMaAG has delivered 2 biomass power plants, a solar project, and 3 ecological properties – including a highly energy-efficient residential area with 32 apartments for families, couples, and seniors.
Staff at two locations
Total investment volume including biomass
installed capacity
overall marketed
Wind turbines in 35 business parks under commercial administration
Wind turbines planned and built in over 50 wind farms
Wind turbines in 22 wind farms under technical administration
Conceptualisation of biomass power plants
Our white papers provide analysis and concrete proposals for solutions to the urgent issues of our time.
From the heat transition in rural areas to building and bureaucracy reform – we get to the heart of complex issues.
