Warsaw is seeking to sell its stake in municipal heating network operator, SPEC, Bloomberg reports. The city is selling the company’s stake after Vattenfall said it will sell its main supplier. Fortum, Vattenfall’s biggest competitor in the Nordic markets, may bid in both of the processes. The Polish capital is seeking non-binding bids by March 28, 2011 and will shortlist potential investors by April 20, 2011. Warsaw values SPEC at over $264 million.

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