A nuclear plant emergency power system comprising: a turbine configured to power a coolant pump for a nuclear reactor; a speed controller configured to monitor a speed of the turbine and to control a speed of the turbine; a control room flow controller configured to receive turbine information from the speed controller and transmit turbine speed commands to the speed controller; an emergency power distribution system electrically connected to the speed controller and the control room flow controller and arranged tp provide power to the speed controller and to the control room flow controller in case of emergency; and a turbine speed control system comprising: a generator installed on the turbine, wherein the generator generates electrical power from the turbine; a direct electrical connection between the generator and at least one of the speed controller and the control room flow controller; wherein the direct electrical connection permits operation of the speed controller and/or control room flow controller with said electrical power; wherein the emergency power distribution system is also connected to the direct electrical connection, and wherein the speed controller and/or control room flow controller are configured so that the operation of the speed controller and/or control room flow controller with said electrical power permits the turbine to be controlled in the event of failure of the emergency power distribution system. a turbine configured to power a coolant pump for a nuclear reactor; a speed controller configured to monitor a speed of the turbine and to control a speed of the turbine; a control room flow controller configured to receive turbine information from the speed controller and transmit turbine speed commands to the speed controller; an emergency power distribution system electrically connected to the speed controller and the control room flow controller and arranged tp provide power to the speed controller and to the control room flow controller in case of emergency; and a turbine speed control system comprising: a generator installed on the turbine, wherein the generator generates electrical power from the turbine; a direct electrical connection between the generator and at least one of the speed controller and the control room flow controller; wherein the direct electrical connection permits operation of the speed controller and/or control room flow controller with said electrical power; a generator installed on the turbine, wherein the generator generates electrical power from the turbine; a direct electrical connection between the generator and at least one of the speed controller and the control room flow controller; wherein the direct electrical connection permits operation of the speed controller and/or control room flow controller with said electrical power; wherein the emergency power distribution system is also connected to the direct electrical connection, and wherein the speed controller and/or control room flow controller are configured so that the operation of the speed controller and/or control room flow controller with said electrical power permits the turbine to be controlled in the event of failure of the emergency power distribution system.