Vertical Axis Wind Turbines (VAWT): Wind turbines that have their main rotor shaft and generator placed vertically. VAWTs are less common than HAWTs but can be more efficient in certain conditions.
Intermittent Energy Source: A source of energy that is not continuously available, such as wind or solar power. These sources depend on natural factors like weather conditions and may not produce electricity consistently.
Renewable Energy: Energy derived from sources that can be naturally replenished, such as sunlight, wind, or water. Unlike fossil fuels, renewable energy sources do not deplete over time.