Electrical efficiency refers to the ratio of useful electrical output to the total electrical input. It measures how effectively an electrical system converts energy from one form to another, such as from electricity to mechanical energy in motors. Higher efficiency means less energy is wasted, leading to lower operational costs and reduced environmental impact. Improving electrical efficiency can involve using advanced technologies, such as LED lighting or high-efficiency appliances, which consume less power while providing the same level of performance. This not only saves money for consumers but also contributes to a more sustainable energy future by reducing overall energy demand.