What is the energy to power ratio of a storage plant?

For instance, a storage plant with a rated output of 100MW, and an energy capacity of 50MWh, has an energy to power ratio of 30 minutes. Different energy storage technologies do well in one dimension or another. Some, like supercapacitors, excel at a high power rating for a few seconds or minutes.

How are energy storage modules measured?

Energy storage modules needs to be measured in (at least) two dimensions: their rated output or power rating, and their energy capacity. Their power rating, in MW, measures the instantaneous demand requirement they are able to supply. If you add the power rating of all the demand appliances connected to an energy storage module, they

How do you calculate the duration of a power module?

Well, if you divide the energy capacity (in MWh) by the power rating (MW), you get the duration (in hours, minutes or seconds) that the module can operate while delivering its rated output. This duration is the energy to power ratio. It is sometimes called the discharge time.

What is the difference between energy capacity and power rating?

The energy capacity, in MWh, specifies the total amount of energy that the module is able to deliver over time. So what is special about the two? Well, if you divide the energy capacity (in MWh) by the power rating (MW), you get the duration (in hours, minutes or seconds) that the module can operate while delivering its rated output.