With the completion of partial repair of both sand ponds damaged by landslides, 456 megawatts of electricity will be generated from the project.
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The indigenously invested Upper Tamakoshi Hydropower Station has started generating electricity at full capacity around the clock. With the completion of partial repair of both the sand settling ponds (descenders) damaged by the landslide, 456 megawatts of electricity have been produced at full capacity around the clock.
Last year, on October 11, a landslide destroyed the electricity control room and the underground canal (culvert) along with both descenders of the hydropower plant. It caused great damage to those structures, due to which electricity production was stopped for 3 months last year.
Last December, the center was generating electricity based on the river after repairing the desander on the left side of the two ponds that were causing sand. Purnagopal Ranjith, manager of the center, said that after the right-side descender was partially repaired, the center filled the dam site with water and brought the hydropower plant into operation at full capacity. He said that since Thursday afternoon, Upper Tamakoshi hydropower station has started generating 456 megawatts of electricity around the clock.
"We have brought the Tamakoshi hydropower plant into operation at full capacity," Ranjith said, "The reconstruction has not been completed to bring it back to its original state." But for the three months of this rainy season, we have brought both desanders partially into operation to reduce the center's losses. He said that it will take another 45 days to complete the reconstruction of both desanders.
"The burden of loss will increase for the Tamakoshi company if it is put into full operation after one and a half months, so currently it is partially prepared and produced at full capacity," he said, "The repair of the underground canal damaged by Ledo has been completed." By filling the dam with water, 456 megawatts of electricity is generated twenty-four hours a day until October.'
Since it is the rainy season, Ranjith said that the center will produce electricity keeping in view the flood situation. The design discharge (flow of water) of Tamakoshi Hydropower Station is 66 cusec. The incessant rains of last October had raised the flow of the Tamakoshi River to 461 cusecs at the dam. According to the power purchase agreement (PPA) signed by Tamakoshi with the authority, the power plant should be closed as soon as the water flow reaches 250 cusecs.
The power control room of the hydropower plant is being constructed. When the landslide completely damaged the building of the electricity control room, two employees and two army personnel were killed. Upper Tamakoshi had claimed insurance of 1 billion 80 million rupees for the civil, electro-mechanical and other equipment damaged by the landslide.
Tamakoshi has the capacity to generate electricity worth Rs 4 crore per day. It has been facilitating load management by producing electricity according to the demand of the electricity authorities during winters across the country. In winter, the authority has been running Tamakoshi as a backup to manage the load. The semi-reservoir project (PROR) is planned to operate at full capacity in upper Tamakoshi rains and for 4 hours in winter.
Upper Tamakoshi Hydropower Company Limited is building a new project to divert the water of Rolwaling river to reach the full capacity of the hydropower plant for 6 hours during winter. An additional 22 megawatts of electricity will be generated from the project. After generating electricity, water from the same project will be pumped to the dam site of the Tamakoshi hydropower station.
