There are many advantages of a hybrid boiler operation. One is the electrical supply pricing varies and that can be monitored and taken advantage of by a boiler. The boiler can shift from one mode to another at a preset time or triggered by other inputs. Having a SCR power control can maintain boiler minimum temperature when there is no demand or minimal demand. This prevents condensation when the fossil fuel is fired. A Reimers boiler control can manage separate boilers or a boiler that has electric and fossil input in the same vessel.