Get to know us
About us
Four entities. One mission.
Alternative Energy Solutions is a holding company in Augsburg, Germany. Under one roof we bring together four companies with a single purpose: making large diesel engines cleaner and more efficient.
Who we are
One group, one purpose
Your engines will run for decades. The emission limits apply today. Alternative Energy Solutions closes that gap with retrofits instead of replacements.
AES Holding GmbH holds the shares, sets the engineering standards and keeps the technology development in one place. The four operating companies carry the projects, each one focused on its own market and all of them working to the same standards.
Our structure
Alternative Energy Solutions
Holding GmbH
Augsburg, Germany
AES Engineering & Consulting
Pre-studies, design and simulation
AES Maritime Projects GmbH
Emission reduction and fuel savings for ships
AES Power Projects GmbH
Retrofits for stationary power stations
AES Mobile Power LLC
Mobile electrical power on water, land and rail
What drives us
Mission and values
Our mission is simple: keep the engines that already exist running, and make them cleaner while they do. How we get there matters as much as the result.
As Alternative Energy Solutions (AES), we are committed to the following values:
A healthy environment
Our products reduce the emission of pollutants and the consumption of fuel. This makes them an effective contribution to climate protection.
A fair economy
We deliver and install our products in the best possible quality at a fair and honest price.
Equal worth of all people
We make no distinction when choosing our partners and customers: we work worldwide with everyone who wants to improve their engines.
Peaceful coexistence
We are guided by Article 1 of the German Basic Law: “Human dignity shall be inviolable.” That is why we treat all people equally, regardless of their beliefs, origin, gender, sexual orientation or disability.
Founder and owner
Dr.-Ing. Thomas Spindler
Thomas Spindler studied mechanical engineering and holds a Master of Science from Leeds University a doctorate in turbomachinery from the University of Stuttgart.
His working life has been spent on engines. He began in numerical simulation at Mercedes-Benz in Stuttgart, first on passenger cars and later on commercial vehicles. In 2006 he moved to MAN Diesel & Turbo in Augsburg and led the turbocharger retrofit business and founded the Upgrades & Retrofits department for four-stroke engines in marine applications and power plants.
What carried him through all of it was one idea: an engine that already exists is worth improving. In 2021 he founded Alternative Energy Solutions to do exactly that.
The team
The minds behind AES
Christine Goller
Head of Sales & Tendering
David Haas
Head of Product Development
Dr. Michael Philipp
Head of Public Relations
Andre Voges
CEO, AES Power Projects GmbH
What’s new
News from AES
Company · February 2026
Strategy workshop in Augsburg
Leading representatives from across the company, from product development, project handling and management, came together in Augsburg for a strategy workshop moderated by an external consultant.
Together, they discussed how to manage the current company growth sustainably.
The outcome was a clear organisational structure that supports further growth and greater efficiency.
Trade fair · September 2025
AES at EUROPORT
At the world’s leading maritime trade fair, our team presented blueEGR and HYDRAULICA and met ship operators, shipyards and our agencies from across Europe.
Let us look at your engines
Whether you operate a fleet, a power plant or are planning a project: tell us what you run, and we will tell you what is possible.