Mostostal Warszawa holds a 44.9% stake in a freshly signed PLN 1.1 billion gross consortial deal with power utility PGE to modernize the Porabka-Zar PSH plant, the company said in a filing. Consortium leader GE Hydro France S.A.S. holds a 55.1% stake in the venture. The consortium has 66 months to complete the contract.