The paper focuses on technical and economical analysis on a foliage extract manufacturing plant that produces natural food enriches, fodder additives, raw materials for other industries, essential oils, wax, sodium chlorophylline, chlorophyll-carotene paste and more. The aim of paper is to determine a environmental “weak points” of whole plant and give a cleaner production suggestion (with economical analysis) how to overcame it in order to achieve higher environmental standards than legally necessary. A detailed analysis of production processes and their data was made, it was concluded that manufacturing itself is up to Best Available Techniques as far as suggestions goes. As the production itself is quite unique it wasn’t possible to use benchmarking to determine its performance. The “weak point” is steam generation for manufacturing needs. Now a diesel steam generator is used, the suggestions is to replace it with biomass gasification steam boiler. Economical analysis of this suggestion shows that it is effective and economically reasonable if specific production capacity can be retained