Power-and-heat supply refers to the provision of energy for both electricity and heat for various applications. Synonyms for power-and-heat supply include energy supply, electricity and heating, power generation, and energy delivery. Other similar terms include power and thermal systems, energy production and distribution, and power transmission. In the context of utilities, these terms can also be used interchangeably with energy service, power service, and energy distribution. Regardless of the terminology used, the critical factor is that these systems provide reliable and consistent power and heat to homes, businesses, and public facilities. Such service ensures that daily life functions smoothly and that the community remains safe and comfortable.