Drei Tau Engineering<\/h1><\/div>Many years of expertise<\/h2><\/div>Contact us now<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>Drei Tau – Engineering for the energy world of tomorrow<\/h2><\/div>Technology that enables change – from control to operational management<\/h3><\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/drei-tau.de\/wp-content\/uploads\/2025\/04\/dreitau_unternehmen_05.jpg\")
<\/span><\/div><\/div><\/div>With our expertise in the areas of control technology, load management and cloud monitoring, we ensure the safe operation of decentralized energy systems – from individual projects to complex system solutions. The focus here is on standard-compliant implementation, maximum IT\/OT security and a manufacturer-independent system architecture.<\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The team behind DREI TAU<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who work passionately on sustainable energy solutions. Together, we combine sound technical expertise with a deep understanding of normative requirements, IT security and the challenges of the energy transition. Our aim is not only to deliver technologies, but also to work in partnership with our customers – pragmatically, reliably and on an equal footing.<\/p>\n<\/div><\/div><\/div>
![](\"https:\/\/drei-tau.de\/wp-content\/uploads\/2025\/09\/15_270825_Drei_Tau0210-scaled.jpg\" "\\"Hein-Hoyer-Str.")
<\/span><\/div>Stefan Greiner<\/h4><\/div>
Many years of expertise<\/h2><\/div>Contact us now<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>Drei Tau – Engineering for the energy world of tomorrow<\/h2><\/div>Technology that enables change – from control to operational management<\/h3><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>With our expertise in the areas of control technology, load management and cloud monitoring, we ensure the safe operation of decentralized energy systems – from individual projects to complex system solutions. The focus here is on standard-compliant implementation, maximum IT\/OT security and a manufacturer-independent system architecture.<\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The team behind DREI TAU<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who work passionately on sustainable energy solutions. Together, we combine sound technical expertise with a deep understanding of normative requirements, IT security and the challenges of the energy transition. Our aim is not only to deliver technologies, but also to work in partnership with our customers – pragmatically, reliably and on an equal footing.<\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>
Drei Tau – Engineering for the energy world of tomorrow<\/h2><\/div>Technology that enables change – from control to operational management<\/h3><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>With our expertise in the areas of control technology, load management and cloud monitoring, we ensure the safe operation of decentralized energy systems – from individual projects to complex system solutions. The focus here is on standard-compliant implementation, maximum IT\/OT security and a manufacturer-independent system architecture.<\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The team behind DREI TAU<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who work passionately on sustainable energy solutions. Together, we combine sound technical expertise with a deep understanding of normative requirements, IT security and the challenges of the energy transition. Our aim is not only to deliver technologies, but also to work in partnership with our customers – pragmatically, reliably and on an equal footing.<\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>
Technology that enables change – from control to operational management<\/h3><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>With our expertise in the areas of control technology, load management and cloud monitoring, we ensure the safe operation of decentralized energy systems – from individual projects to complex system solutions. The focus here is on standard-compliant implementation, maximum IT\/OT security and a manufacturer-independent system architecture.<\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The team behind DREI TAU<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who work passionately on sustainable energy solutions. Together, we combine sound technical expertise with a deep understanding of normative requirements, IT security and the challenges of the energy transition. Our aim is not only to deliver technologies, but also to work in partnership with our customers – pragmatically, reliably and on an equal footing.<\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>
<\/span><\/div><\/div><\/div>With our expertise in the areas of control technology, load management and cloud monitoring, we ensure the safe operation of decentralized energy systems – from individual projects to complex system solutions. The focus here is on standard-compliant implementation, maximum IT\/OT security and a manufacturer-independent system architecture.<\/p>\n<\/div><\/div><\/div>
The team behind DREI TAU<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who work passionately on sustainable energy solutions. Together, we combine sound technical expertise with a deep understanding of normative requirements, IT security and the challenges of the energy transition. Our aim is not only to deliver technologies, but also to work in partnership with our customers – pragmatically, reliably and on an equal footing.<\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>
Behind our solutions is a dedicated team of experienced engineers and developers who work passionately on sustainable energy solutions. Together, we combine sound technical expertise with a deep understanding of normative requirements, IT security and the challenges of the energy transition. Our aim is not only to deliver technologies, but also to work in partnership with our customers – pragmatically, reliably and on an equal footing.<\/p>\n<\/div><\/div><\/div>
<\/span><\/div>![](\"https:\/\/drei-tau.de\/wp-content\/uploads\/2025\/09\/15_270825_Drei_Tau0132-scaled.jpg\" "\\"Hein-Hoyer-Str.")
<\/span><\/div>![](\"https:\/\/drei-tau.de\/wp-content\/uploads\/2025\/03\/dreitau_kontaktfeld.jpg\")
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