“Capacity” is an often misunderstood word. The “nameplate capacity” of a wind turbine might be 10 megawatts, but that amount of electricity is only going to be generated when the wind is blowing and the system isn’t down for maintenance. With intermittent sources of electricity generating technologies such as wind turbines, the “yield” is what matters, and that is unlikely to ever exceed 40 percent, even offshore.
