MW refers to the power rating, indicating the maximum amount of electricity a battery can provide or store at a specific moment, while MWh represents the energy capacity, signifying the total amount of electricity a battery can deliver over time. . In the energy storage sector, MW (megawatts) and MWh (megawatt-hours) are core metrics for describing system capabilities, yet confusion persists regarding their distinctions and applications. While they might seem similar, they represent two fundamentally different aspects of energy. In this article, we'll explore the difference between MWh and MW in the context of energy. . The power level determines how much energy storage system can release or absorb per unit time, directly affecting its peak and frequency regulation capabilities. For example, a 100MW/200MWh energy storage plant can theoretically store or release 100MWh of energy (or 100,000 kWh) per hour.
