FRANKFURT - German wind and solar park operator Chorus Clean Energy has for now cancelled its planned stock market listing amid wobbly markets. “The decision was taken due to the sharpened economic situation in Greece and the impact on the global financial markets,” the company said in a statement on Thursday, adding it currently saw no possibility to achieve an appropriate valuation in an initial public offering (IPO). While other IPO candidates had cancelled their plans earlier this month, Chorus initially stuck to its flotation plans, but extended its offer period.