Zumtobel Group: portfolio and EPD coverage snapshot

Who they are

Zumtobel Group is an Austria‑based lighting manufacturer with three core brands: Zumtobel (architectural), Thorn (professional indoor and outdoor), and Tridonic (components and controls). The group reported €1,127 million in revenue and 5,300 employees in FY 2023/24, with LED making up 98% of sales (Zumtobel Group, 2025) (Zumtobel Group, 2025).

What they sell

Across the three brands, the range covers indoor luminaires for offices, education, retail, hospitality, healthcare, and culture; outdoor and street lighting; emergency lighting; plus LED drivers, modules, sensors and connected controls. SKU counts vary by region and channel, but the combined active catalogue easily runs into the hundreds, with dozens of families offering size, optic, lumen and control variants.

Where the EPDs live

For Zumtobel brand products, the company makes its Environmental Product Declarations available in the online catalogue and positions them within its Green Building resources (Zumtobel Green Building). Thorn’s product pages also surface EPD availability filters on common families, signaling routine coverage for many indoor and outdoor luminaires. In practice, current EPDs you will find are typically EN 15804+A2 product‑specific declarations for luminaire families sold in Europe.

Coverage strength by product type

The most consistent coverage appears on building‑integrated luminaires that influence embodied carbon accounting in projects. That includes ceiling systems, linear systems, downlights, surface and suspended office lights, as well as common exterior ranges. Emergency luminaires are increasingly included, though not universally so across each family. Components such as LED drivers and sensors are less often covered by EN 15804 EPDs because they are frequently addressed under electronic‑equipment standards like EN 50693 or PEP‑type declarations, which many construction submittals do not count toward materials credits.

What looks light on coverage

Controls ecosystems, standalone sensors and some driver series show thinner public EPD coverage. Bespoke or heavily configured project variants can also lag if they sit adjacent to, but outside, an EPD’s product‑model boundary. None of this is unique to Zumtobel. It is a common pattern in lighting where catalogs evolve faster than declarations refresh.

Why the gaps matter commercially

On projects targeting lower embodied carbon and LEED v5 points, missing product‑specific EPDs push design teams toward pessimistic default factors, which can nudge selection toward comparable luminaires that do have declarations. Program operators note that verification queues can stretch to multiple months, so waiting until bid time is risky (IBU, 2025) (IBU, 2025).

Likely competitors in the spec arena

Zumtobel and Thorn regularly meet Signify, Fagerhult Group brands, Trilux, Glamox and XAL in offices, education, healthcare and urban outdoor. Many of these peers publicly list EPD‑flagged families in their European catalogs, so the bar is moving together. Where one brand publishes an EPD for a popular office linear or downlight, the rest feel it in the shortlist.

Quick portfolio takeaways

• Indoor and outdoor luminaires: strong and broad coverage, with many families listing EPDs directly in product pages.
• Emergency lighting: improving, but not yet wall‑to‑wall across every variant.
• Components and controls: EPDs exist in non‑EN 15804 formats more often than in building‑product EPDs, which can limit credit eligibility.
• Regional nuance: EN 15804+A2 EPDs travel well in Europe through ECO Platform recognition, yet project teams still value operator familiarity and easy discoverability in public databases (IBU, 2025).

What a pragmatic next step looks like

If a flagship luminaire family ships in high volumes, ensure the current family‑level EPD clearly covers the exact optics, lengths and control options sold most often. Add emergency variants where feasible so entire room or corridor packages stay compliant. For controls and drivers, decide upfront whether an EN 15804 route or an electronics standard best serves your key markets, then publish where specifiers actually search. A clean EPD map reduces last‑minute substitution drama and keeps pricing power where it belongs.

Why teams pick the right LCA partner

The heavy lift is data wrangling across plants, SKUs and options. The fastest route pairs ruthless internal data collection with seasoned EPD authorship, so verification moves once, not five times. That matters when verifier queues can run near six months in busy cycles (IBU, 2025). Done well, the effort is earned back quickly when a luminaire family becomes the default pick on EPD‑sensitive jobs. Getting there is definately easier with a partner who takes the admin off your plate.