National support upon establishing the FEP
- Geological Institute of Slovenia (orig. Geološki Zavod Slovenije)
- Slovenian Forestry Institute
- Slovenian Institute of Hop Research and Brewing (orig. Inštitut za hmeljarstvo in pivovarstvo Slovenije)
- Institute of Waters Slovenia (orig. Inštitut za vode Republike Slovenije)
- Institute of Chemistry Slovenia (orig. Kemijski inštitut Slovenija)
- Jožef Stefan International Postgraduate School Ljubljana (orig. Mednarodna podiplomska šola Jožefa Stefana Ljubljana)
- National Institute of Biology Slovenia (orig. Nacionalni inštitut za biologijo)
- Institute of Technical Studies Nova Gorica (orig. Politehnika Nova Gorica)
- Triglav National Park
- Institute of Ecology,
- Ministry of the Environment and Spatial Planning, Slovenian Environment Agency
- Chamber of Commerce and Industry Slovenia (orig. GZS), Environmental Protection Agency
- Institute of Ecology
- Ministry of Environmental and Spatial Planning, Environmental Agency
- Chamber of Commerce and Industry, Department for Environmental Protection
Regional support upon establishing the FEP
- Chamber of Commerce and Industry Slovenia (orig. GZS), administrative office Celje
- Kozjanski park Podsreda, public institute
- Chamber of Agriculture and Forestry of Slovenia, branch office in Celje
- RRA Celje d.o.o. , Regional Development Agency
- Slovenia Forest Service (orig. Zavod za gozdove Slovenije), branch office in Nazarje
- Institute of Public Health Slovenia, branch office Celje
- ERICO Velenje
- municipality of Velenje
Support of industry
- BSH d.o.o.
- Celjske mesnine d.d.
- Cetis d.d.
- Cinkarna d.d.
- Eko d.o.o.
- Elkroj d.d.
- Esotech d.d.
- Geneza d.o.o.
- Gorenje d.d.
- Gorenje Orodjarna d.o.o.
- Inexa d.o.o.
- Javne naprave d.o.o.
- Juteks d.d.
- Klima d.d.
- Schiedel d.o.o.
- SG Automotive d.o.o.
- Steklarna Rogaška d.d.
- Štore Steel d.o.o.
- Termoelektrarna Šoštanj d.o.o.
- Unior d.d.
- Vegrad d.d.
- Vodovod-kanalizacija d.o.o.
- Zdravilišče Laško d.d.
- Plastic Skaza d.o.o.