The rise in the power prices is inevitable, Nikolay Vassilev, Deputy Prime minister and Economy Minister said. It was delayed since it was frozen intentionally by a political decision in 1999-2000, he added. To Vassilev, it is mainly the outgoing president of the State Energy and Energy Resources Agency - Ivan Shilyashki - to be blamed. The man tried once again to provoke chaos in the branch, Vassilev elaborated. He reminded Shilyashki`s instructions on re-negotiation the buying prices of the power between the power producers and power supplying companies. The representatives of the trade ventures, established after the NEC (National Electric Company) division, had been reportedly threatened by Shilyashki with disciplinary dismissals, if they would not appear to sign the annexes, Vassilev revealed. However he e explained all additional agreements, being already sealed, will be canceled.