CHAPTER 08 / RESOURCE AND SERVICE
How does electricity reach an AI system?
Electricity and supporting utilities
Electricity powers processors and the systems around them. Generation, transmission, grid connections and facility distribution connect a computing load to its supply; arrangements vary by location and installation.
Follow the electrical path
Generation supplies electricity to a network. Transmission moves large amounts over distance; substations transform voltage and connect network sections. A facility’s connection may involve transmission or distribution arrangements depending on its size and the local system. Inside the facility, distribution and conversion deliver suitable power to equipment.
Energy and capacity differ
Power is the rate of using energy, commonly measured in watts. Energy is the amount used over time, commonly measured in watt-hours. A connection must support the required power, while total energy use depends on workload and operating hours. Capacity and energy are related but different planning questions.
Supporting resources
Backup generation, batteries or other onsite resources can support continuity, depending on design. They do not eliminate every supply constraint. Cooling may require water, and communication requires network infrastructure. Local resource availability, operating needs and environmental effects should be considered together.
Keep this connection in mind.
Ask both how much power must be available and how much energy is used over time. Avoid treating all facilities alike.
- Computing equipment powered by Electricity
- Facility support systems powered by Electricity
Sources for this introduction
- U.S. Department of Energy · Data center design guide (2024) ↗
IT equipment, electrical distribution, cooling and facility efficiency.
Draft teaching text, prepared with AI assistance. Larry’s editorial review is pending. Read the editorial approach.
EXPLORE RELATED AREAS