e-mesh™ Solutions for utilities

Peak shaving is similar to load leveling, but may be for the purpose of reducing peak demand rather than for the economy of operation.

The goal is to avoid the installation of the capacity to supply the peaks of a highly variable load. Energy storage provides fast response and emission-free operation, making it the optimal solution for this application. Peak shaving installations are often owned by the electricity consumer, rather than by the utility.

Benefits include:

• Commercial and industrial customers save on their electricity bills by reducing peak demand
• Utilities reduce the operational cost of generating power during peak periods (reducing the need for peaking units)
• Investment in infrastructure is delayed due to the flatter loads with smaller peaks

Hitachi Energy offers turnkey energy storage systems for power requirements ranging from hundreds of kilowatts to tens of megawatts, and including medium- or high-voltage grid connection. By choosing Hitachi Energy as a turnkey system provider, the customer gains a reliable partner for the overall system. Our project team acts as a single point of responsibility, thus minimizing project risk and complexity.

The variable, intermittent power output from a renewable power generation plant, such as wind or solar, can be maintained at a committed level for a period of time.

The energy storage system smoothes the output and controls the ramp rate (MW/min) to eliminate rapid voltage and power swings on the electrical grid.

Hitachi Energy offers turnkey energy storage systems for power requirements ranging from hundreds of kilowatts to tens of megawatts, and including medium- or high-voltage grid connection. By choosing Hitachi Energy as a turnkey system provider, the customer gains a reliable partner for the overall system. Our project team acts as a single point of responsibility, thus minimizing project risk and complexity.

Intermittent power generation from renewables and other sources, along with variable loads cause deviations from the nominal frequency in the grid.

Energy storage systems are an attractive way to restore the balance between supply and demand, featuring rapid response and emission-free operation. The energy storage system is charged or discharged in response to an increase or decrease of grid frequency and keeps it within pre-set limits.

Hitachi Energy offers turnkey energy storage systems for power requirements ranging from hundreds of kilowatts to tens of megawatts, and including medium- or high-voltage grid connection. By choosing Hitachi Energy as a turnkey system provider, the customer gains a reliable partner for the overall system. Our project team acts as a single point of responsibility, thus minimizing project risk and complexity.

While the demand for high-quality power has grown with the digital economy and the proliferation of sensitive electronic equipment and microprocessor-based controls, investments in many electrical grids around the world have not kept pace, making them even more susceptible to disturbances such as voltage sags and short supply interruptions.

Offering accurate and rapid response, energy storage systems improve power quality and protect downstream loads against short-duration disturbances in the grid, affecting their operation.

Hitachi Energy offers turnkey energy storage systems for power requirements ranging from hundreds of kilowatts to tens of megawatts, and including medium- or high-voltage grid connection. By choosing Hitachi Energy as a turnkey system provider, the customer gains a reliable partner for the overall system. Our project team acts as a single point of responsibility, thus minimizing project risk and complexity.

To provide effective spinning reserve, the energy storage system is maintained at a level of charge ready to respond to a generation or transmission outage.

Depending on the application, the system can respond within milliseconds or minutes and supply power to maintain network continuity while the back-up generator is started and brought online. This enables generators to work at optimum power output, without the need to keep idle capacity for spinning reserves. It can also eliminate the need to have back-up generators running idle.

Hitachi Energy offers turnkey energy storage systems for power requirements ranging from hundreds of kilowatts to tens of megawatts, and including medium- or high-voltage grid connection. By choosing Hitachi Energy as a turnkey system provider, the customer gains a reliable partner for the overall system. Our project team acts as a single point of responsibility, thus minimizing project risk and complexity.