Three units of Birsinghpur-based Sanjay Gandhi Thermal Power Station had shut down between 2.30 and 2.45 pm due to some snag in frequency system on Friday. But the snag was overcome within two hours and the three units started generating power as earlier. Meanwhile, the work of repairing a 500 MW unit of BHEL at Birsinghpur is fast progressing and this unit too is expected to resume power generation by Sunday morning. According to information received from Energy Department, all other power generation units in the state are working normally. However, the power units run by the National Thermal Power Corporation of central government at Vindhyachal and Korba are lying closed despite shortage of power in the state. In the meantime, the Union government has cut down on quota of coal for the state. As a result of constant watch by the state government on power generation and its alacrity, three units of 210 MW capacity each at Birsinghpur which had shut down due to snag in frequency grid, were started within two hours. The snag had occurred due to overdraw of power by Northern grid. The snag in another 500 MW BHEL unit is being removed at a rapid pace and this unit would also start functioning again from Sunday morning. A matter of serious concern is that despite power shortage in the state, Vindhyachal and Korba units of 210 MW capacity each, which are centrally controlled by NTPC are lying closed since March 31 and April 8, respectively. This has affected power supply in the state adversely. Not even enough coal from Centre It is a bitter fact that the quota of coal supplied for state's thermal power stations has been curtailed to a great extent. Due to this, only two to three days' stock of coal is available at Satpura Thermal Power Station at Sarni. Chief Minister Shivraj Singh Chouhan and Chief Secretary Rakesh Sahni have been contacting Union Coal Ministry at their respective levels for allotment of coal as per requirements and have made the Centre aware of the entire situation. It is a fact that non-availability of coal would adversely affect power generation and supply. An analysis of first three months' situation clearly shows that coal quota for state's thermal power stations has been curtailed by the Union government. Amarkantak plant has been allotted 1.2 LMT coal against the requirement of 1.9 LMT, Sanjay Gandhi Thermal Power Plant has been allotted 5.75 LMT coal against the requirement of 6.8 LMT and Satpura plant has been allotted 5.75 LMT coal against requirement of 6.6 LMT coal.