In March 2016 CEZ reported that "In the Prunéřov Power Plant renovation project, installation work was completed and commissioning is underway (complex testing is underway at B23 and B24 units, first synchronization of B25 unit was performed on Dec 19, 2015)." Full commercial operation of the renovated units is planned for 2016.<ref>[https://www.cez.cz/edee/content/file-s/pro-investory/informacni-povinnost-emitenta/2016-03/cez-014-2016_en_46xyvz7z7s46vhxz.pdf "Press conference on CEZ Group financial results,"] ČEZ Group, Mar 15, 2016</ref>
The three units began operating in 2016.<ref>[http://webcache.googleusercontent.com/search?q=cache:Z9-ja5iGnD0J:www.mzp.cz/ippc/ippc4.nsf/xsp/.ibmmodres/domino/OpenAttachment/ippc/ippc4.nsf/B48ACBB147BF1EDEC12580F200248BC0/Files/EPR %2520- Z20 N %2520Z20%2520N%2520- IP%2520IP.doc +&cd=1&hl=en&ct=clnk&gl=us "EPR - Z20 N - IP.doc - Ministerstvo životního prostředí,"] Czech Ministry of the Environment, March 27, 2017</ref>
==Coal source==