Analysts say an excessively early declaration by officials from Polish utility Enea of the firm's interest in investing in coal miner Bogdanka could have seriously handicapped any future investment opportunities.

“The public announcement of one's interest in a particular firm is the worst method of finalizing such a transaction,” Paweł Puchalski, an analyst at DM BZ WBK, told Parkiet.

Enea's deputy CEO said earlier in the week that his company is considering investing in the coal miner to gain direct access to coal used for energy production.

"We are considering such an idea and we are running a deep analysis of it now," deputy CEO Krzysztof Zborowski said in an interview for TVN CNBC. "We have also thought about that before."

"This is in a study phase, but privately I think that creating a line from extraction, through production and sale does make a lot of sense."

Bogdanka's stock jumped 4.6 percent on Monday, after the news broke, and another 2.2 percent on Tuesday.

Poland A.M.