ASTANA. July 30. KAZINFORM /Aigul Tulekbayeva/ - Prime Minister of Kazakhstan Karim Massimov has charged the Kazakh Energy and Mineral Resources Ministry to hold negotiations with the relevant departments of Uzbekistan and Kyrgyzstan on interaction in the sphere of energy and consider the possibility for creation of the unified electric power system during today’s telephone conference in Astana. As reported earlier, the Kazakh PM paid an official visit to Kyrgyzstan and Uzbekistan in July. Mr. Massimov ordered to analyze the construction of Kambarata - 1 and Kambarata - 2 hydroelectric stations as well.