Drei Tau Engineering<\/h1><\/div>Many years of expertise<\/h2><\/div>Contact us now<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>DREI TAU \u2013 Engineering for Tomorrow’s Energy World<\/h2><\/div>Technology that enables change\u2014from control systems to operations 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 control engineering, load management, and cloud monitoring, we ensure the safe operation of decentralized energy systems\u2014from individual projects to complex system solutions. Our focus is on compliance with standards, the highest level of IT security, and a vendor-neutral system architecture. <\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The People Behind It<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who are passionate about creating sustainable energy solutions. Together, we combine in-depth technical expertise with a deep understanding of regulatory requirements, IT security, and the challenges of the energy transition. Our goal is not only to deliver technologies, but also to work in partnership with our customers\u2014pragmatically, reliably, and as equals. <\/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>Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/div>
Many years of expertise<\/h2><\/div>Contact us now<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>DREI TAU \u2013 Engineering for Tomorrow’s Energy World<\/h2><\/div>Technology that enables change\u2014from control systems to operations management<\/h3><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>With our expertise in control engineering, load management, and cloud monitoring, we ensure the safe operation of decentralized energy systems\u2014from individual projects to complex system solutions. Our focus is on compliance with standards, the highest level of IT security, and a vendor-neutral system architecture. <\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The People Behind It<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who are passionate about creating sustainable energy solutions. Together, we combine in-depth technical expertise with a deep understanding of regulatory requirements, IT security, and the challenges of the energy transition. Our goal is not only to deliver technologies, but also to work in partnership with our customers\u2014pragmatically, reliably, and as equals. <\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/div>
DREI TAU \u2013 Engineering for Tomorrow’s Energy World<\/h2><\/div>Technology that enables change\u2014from control systems to operations management<\/h3><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>With our expertise in control engineering, load management, and cloud monitoring, we ensure the safe operation of decentralized energy systems\u2014from individual projects to complex system solutions. Our focus is on compliance with standards, the highest level of IT security, and a vendor-neutral system architecture. <\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The People Behind It<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who are passionate about creating sustainable energy solutions. Together, we combine in-depth technical expertise with a deep understanding of regulatory requirements, IT security, and the challenges of the energy transition. Our goal is not only to deliver technologies, but also to work in partnership with our customers\u2014pragmatically, reliably, and as equals. <\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/div>
Technology that enables change\u2014from control systems to operations management<\/h3><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>With our expertise in control engineering, load management, and cloud monitoring, we ensure the safe operation of decentralized energy systems\u2014from individual projects to complex system solutions. Our focus is on compliance with standards, the highest level of IT security, and a vendor-neutral system architecture. <\/p>\n<\/div><\/div><\/div>
Business areas<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>The People Behind It<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who are passionate about creating sustainable energy solutions. Together, we combine in-depth technical expertise with a deep understanding of regulatory requirements, IT security, and the challenges of the energy transition. Our goal is not only to deliver technologies, but also to work in partnership with our customers\u2014pragmatically, reliably, and as equals. <\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/div>
<\/span><\/div><\/div><\/div>With our expertise in control engineering, load management, and cloud monitoring, we ensure the safe operation of decentralized energy systems\u2014from individual projects to complex system solutions. Our focus is on compliance with standards, the highest level of IT security, and a vendor-neutral system architecture. <\/p>\n<\/div><\/div><\/div>
The People Behind It<\/h3><\/div>Behind our solutions is a dedicated team of experienced engineers and developers who are passionate about creating sustainable energy solutions. Together, we combine in-depth technical expertise with a deep understanding of regulatory requirements, IT security, and the challenges of the energy transition. Our goal is not only to deliver technologies, but also to work in partnership with our customers\u2014pragmatically, reliably, and as equals. <\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/div>
Behind our solutions is a dedicated team of experienced engineers and developers who are passionate about creating sustainable energy solutions. Together, we combine in-depth technical expertise with a deep understanding of regulatory requirements, IT security, and the challenges of the energy transition. Our goal is not only to deliver technologies, but also to work in partnership with our customers\u2014pragmatically, reliably, and as equals. <\/p>\n<\/div><\/div><\/div>
<\/span><\/div>Stefan Greiner<\/h4><\/div>Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/div>
Managing Director<\/em>
greiner@DREI TAU.de<\/a><\/p>\n<\/div><\/div><\/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\")
<\/span><\/div><\/div><\/div>