Apart from installation of new batteries, there exist other options forkeeping respectively increasing the production capacity of a cokepiant. Economic and environmental requirements have to be takeninto consideration ieading to very simple solutions such as heatingup of old batteries which have been cooled down followed by partialhot repairs, through-wall repairs and pas up rebuilds. Modernizations with regard to anchoring systems, heating conditions and reduction of typical emissions may be implemented in most cases.