VIJAYAWADA: Special chief secretary to the government, energy department, K. Vijayanand said that Mahanadi Coalfields Limited (MCL) has agreed to supply 35.48 lakh tonnes of coal per annum to Sri Damodaram Sanjeevaiah Thermal Power Station (SDSTPS), Stage-II, Unit-3(800 MW) and termed it as a great boon for meeting the rising demand and providing 24×7 qualitative power supply.