This manuscript suggests quasi-oppositional fast convergence evolutionary programming (QOFCEP) technique to determine short-term generation scheduling of fixed head hydrothermal system comprising pumped storage hydro plants (PSHPs), solar PV (SPVPs) and wind turbine generators (WTGs) with demand response program (DRP). PSHPs are used power (FHPPs), thermal generating units (TGUs), SPVPs WTGs op...