Flexible integration of stored heat and electric resources (fisher)

A combined cycle power plant comprising:

• an engine that combusts a fuel with air to produce mechanical power and exhaust gas, the engine configured to provide the mechanical power to drive a first generator to produce electricity;
• an electric heater;
• a thermal energy storage system configured to capture and store heat from the exhaust gas from the engine and to capture and store heat from the electric heater;
• and
• a Rankine cycle comprising:
• a turbine generator configured to expand a gaseous working fluid across a turbine to generate electricity;
• a condenser arranged to condense gaseous working fluid exhaust from the turbine to provide liquid working fluid;
• and
• an evaporator configured to vaporize the liquid working fluid with heat from the thermal energy storage system to provide the gaseous working fluid expanded across the turbine.