A power plant is configured to output power to a grid power system and comprises a hydrogen generation system configured to produce hydrogen, a gas turbine combined cycle power plant comprising a gas turbine engine configured to combust hydrogen from the hydrogen generation system to generate a gas stream that can be used to rotate a turbine shaft and a heat recovery steam generator (HRSG) configured to generate steam with the gas stream of the gas turbine engine to rotate a steam turbine, a storage system configured to store hydrogen produced by the hydrogen generation system, and a controller configured to operate the hydrogen generation system with electricity from the grid power system when the grid power system has excess energy and balance active and reactive loads on the grid power system using at least one of the hydrogen generation system and the gas turbine combined cycle power plant.

Systems and methods are described for powering a load, such as a data center, with renewable energy from a renewable energy source. When the renewable energy is greater than a demand of the load, excess renewable energy is used to power a hydrogen production device or charge a battery depending on whether or not the charge level of the battery satisfies an upper threshold charge level, respectively. When the renewable energy is less than the demand of the load and the charge level of the battery satisfies a lower threshold charge level, the load is powered with energy from the battery. When the renewable energy is less than the demand of the load and the charge level of the battery does not satisfy the lower threshold charge level, the load is powered and the battery is charged with energy generated by the hydrogen-based energy generator.

A management server executes a first step of creating an operation plan for a hydrogen production facility in a first period in a future by solving a mathematical programming problem using an operation state of the hydrogen production facility for each time in the first period as a variable. The management server executes a second step of creating an operation plan for the hydrogen production facility in a second period that is a future period shorter than the first period by solving a mathematical programming problem using an operation state of the hydrogen production facility for each time in the second period as a variable. The management server executes the second step more frequently than the first step. The management server uses a part of the operation plan created in the first step as a constraint condition of the mathematical programming problem in the second step.

Buchanan

A plant network has an electrolysis plant, a power supply source, and a central supply line connected to a DC voltage output of the power supply source for feeding a direct current into the central supply line. The electrolysis plant is connected to a central DC network for a high voltage via the central supply line. The power supply source has a wind turbine as a power generator and a rectifier with a DC voltage output for the high voltage. An energy storage system can feed a direct current into the central supply line. A DC supply network controls three different DC voltage levels independently, namely, a first DC voltage for charging and discharging an electrical storage battery of the energy storage system, a DC-Bus high voltage on the central supply line, and a DC operating voltage of the electrolysis plant.

An electric power storage system is provided with: an electric power supplier that is configured to supply at least a portion of electric power generated by repeatedly alternating unwinding and winding of a tether that moors a flying body to an electric power storage unit, which stores electric power in a predetermined manner, and an electric power holding unit, which is capable of charging and discharging electric power; and a controller that is configured to control the electric power holding unit so that electric power is supplied from the electric power holding unit to the electric power storage unit during winding the tether.

A method of transferring a storage medium loaded on a power generation float from a float that generates electricity on the ocean to a transport vessel on the ocean includes a first process of fixing the power generation float to the transport vessel so that a height of a loading place of the storage medium of the power generation float is higher than a height of a storage place of the storage medium of the transport vessel, a second process of forming a first path in which the storage medium can move between the loading place of the storage medium of the power generation float and the storage place of the storage medium of the transport vessel, and a third process of moving the storage medium from the loading place of the power generation float to the storage place of the transport vessel by gravity through the first path.

Techniques for generating electric power for well site operations include processing a hydrocarbon fluid produced from a subterranean formation, through a wellbore, and to a terranean surface into at least one acid gas; processing the at least one acid gas into hydrogen; generating, with the hydrogen, electrical power from a hydrogen engine; and providing the generated electrical power for use or storage to power at least one electrically-operated machine to perform at least one well site operation.