HYDERABAD: The state government has reportedly decided against signing the power purchase agreement (PPA) for NTPC-Ramagundam Phase-2 (3X800MW), citing projected power costs of Rs 8 to Rs 9 per unit, which could burden the consumers. Instead, the government is planning to develop green energy sources such as solar, hydel and wind, which are expected to offer more cost-effective alternatives to the power from NTPC-Ramagundam. The Congress-led state government has blamed the previous BRS government for not signing the PPA for the second phase of NTPC in the last 10 years, which could lead to a rise in construction costs.