KAMPALA, Uganda, (UPI) -- Energy Officials in Kenya say the current power shortage is likely to continue following the country's worst drought in 100 years. A massive power failure late Saturday night plunged much of Kenya into darkness for about ten hours.

The country's electricity supplier, Kenyan Power and Lighting Company (KPLC), says the prolonged drought has caused water levels to fall sharply in hydroelectric dams. Kenya's Ministry of Energy estimates power rationing, which began last month, could cost an estimated $100 million each month in lost revenue.

The World Bank's representative in Kenya, Harold Wackman, blames years of government mismanagement for the power cuts, which has left Kenya dependent on neighboring Uganda for electricity.

Uganda, meanwhile, has denied responsibility for the power failure. The Uganda Electricity Board (UEB) said its engineers were working to maintain full supply by Monday evening. Power in the coastal city of Mombassa was restored Sunday. In an interview with state-owned Kenya Broadcasting Corporation Monday, the KPLC's spokesman Migwi Theuri said the power supply from Uganda had not yet been restored.

Uganda supplies up to 10 Mega Watts of hydro-electric power to Kenya during off peak hours, but the figure is expected to rise with the commissioning of more generators at the Owen Falls Dam extension project in Jinja town, about 82 kilometers east of Kampala. In May, Ugandan president Yoweri Museveni commissioned a 40 Mega Watt generator at the Owen Falls Dam.

There are discussions between Uganda and Kenya to increase power exports to Kenya. More than three million Kenyans are threatened with starvation after a series of droughts, according to the World Food Program.