The cash-strapped Kerala State Electricity Board (KSEB) can save a whopping Rs 358.8 crore per annum if the National Thermal Power Corporation (NTPC) fully backs down its Kayamkulam thermal power plant. Despite clear clauses in the power purchase agreement (PPA), which allows KSEB to despatch the power station, NTPC is generating power at 100 per cent capacity and feeding the high cost power to the KSEB grid.