The second industrial revolution brought mankind into the "electrification era". What does "electrification" mean?

In order to improve labor productivity and reduce manual labor, electricity is widely used in various fields of the national economy, especially as the power of machines. Electrification is the widespread use of electricity by all sectors of the national economy and people's lives. Electrification seems to have no ultimate goal. Because, no one can foresee the fourth great energy transfer. It is more difficult for people to predict the degree of electrification, such as the extent to which the application of electricity will develop when coal, oil and natural gas are exhausted. As far as the current situation is concerned, the scale of electricity consumption and electrification level in different stages of development in various countries and regions of the world are affected by technical, economic, social and natural factors, showing different electrification levels.