Provided herein are methods and systems for generating industrial heat. The methods may comprise storing, by a thermal energy storage system, heat generated by one or more heat pump cycles as thermal energy in a thermal storage assemblage, and generating, by the thermal energy storage system, an output fluid flow of fluid that has absorbed heat from the heated thermal storage system.

In one embodiment, a heat storage power generation system includes a heater to heat first fluid, and a heat storage to be heated by the first fluid, and heat second fluid with heat stored in the heat storage. The system further includes a generator to generate electric power by using the second fluid, and one or more first path switchers provided on a first path through which the first fluid is circulated between the heater and heat storage. The system further includes one or more second path switchers provided on a second path through which the second fluid is circulated between the heat storage and generator, one or more third path switchers provided on a third path through which at least one of the first and second fluids is circulated between the heater and generator, and a switching controller to control the first, second and third path switchers.

A flow control system comprising a steam generator (SG) having an inlet and an outlet, the SG including a plurality of SG tubes extending from the inlet to the outlet, a primary coolant system configured to transfer heat to the SG, a steam valve fluidly connected to the outlet of the SG, and an SG level control system configured to operate the steam valve based at least in part on an approach temperature.