Domestic subway energy storage

How much energy does New York City subway use?

In 2021, the New York City Transit Subway system consumed approximately 1,500 GWh of traction energy with a demand of about 3,500 megawatts (MW), costing around $203M. Subway trains introduced in the past 20 years have included the capability to perform regenerative braking. All new subway car procurements require regenerative braking capability.

Can wayside energy storage systems improve regenerative braking energy?

Maximum Regenerative Energy Improvement on R142 Train City University of New York (CUNY)/ConEd/NYCT performed a study pertaining to the application of wayside energy storage systems (ESS) for the recuperation of regenerative braking energy within the NYCT subway system.

How many MWh of storage will a 78th Street substation have?

a total of 26 MWh of storage recharged overnight. Control would be based on power draw at each individual substation. Figure 11. Power Demand at the Roosevelt Avenue and 78th Street Substation During a Weekday Figure 11 shows demand at the Roosevelt Avenue and 78th St. substation, one of 13 substations serving the 7 Line.

Can hydrogen-powered subway vehicles promote green innovation?

As subway construction and maintenance vehicles are increasingly adopting new energy technologies, the market prospects are huge. The rollout of the first domestic hydrogen-powered subway vehicle is of great significance for promoting green innovation in the industry.

How is energy storage used in energy recovery applications?

In energy recovery applications, energy storage is used to reduce energy consumption through the capture and release of regenerated energy from rolling stock. Typically, energy produced by the train during braking is consumed by other trains operating in the vicinity.

How much power would a 7 line substation use a day?

Peak demand on the 7 Line is approximately 26 MW for 2 hours, twice per day. A 25% reduction in demand would require a total of 26 MWh of storage recharged overnight. Control would be based on power draw at each individual substation. Figure 11. Power Demand at the Roosevelt Avenue and 78th Street Substation During a Weekday