TUeV Rheinland Energy & Environment GmbH (TREE) is a 100% subsidiary of TUeV Rheinland Industrie Service GmbH headquartered in Cologne. It provides engineering services such as consulting, testing, examinations, measurements, expert reports and certifications in environmental and climate protection as well as energy technology. Services are organised into four areas: immission control (e.g. emissions measurements, calibrations and functional tests), climate protection (e.g. verification of greenhouse gas emissions and certification of green electricity, gas and hydrogen), hazardous substances (building contaminants, workplace measurements, water and hygiene testing) and energy technology (certification of heat generators and ecodesign). TREE offers these services worldwide on the TIC market and identifies the euro area, China, the USA and the Middle East as strong‑demand markets while demand is emerging in India and African countries.
die Erbringung von ingenieurtechnischen Dienstleistungen wie Prüfung, Qualitätssicherung, Messungen, Untersuchungen, Gutachten und Zertifizierungen im Bereich der Energietechnik, des Umwelt- und Klimaschutzes, der Nachhaltigkeit sowie der Arbeits-, Anlagen- und Komponentensicherheit und der damit im sachlichen Zusammenhang stehenden Tätigkeitsgebiete inklusive der erforderlichen Rechte, Anerkennungen und Akkreditierungen / Notifizierungen.
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Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 56171 (as of 9 October 2026)
Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 56171 (as of 9 October 2026)
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Source: German Commercial Register (Handelsregister) Köln Local Court, HRB 56171 (as of 9 October 2026)
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