Defined by Utility Provider and Service Design
Electrical power capacity refers to the maximum amount of electricity that can be delivered to a site, typically measured in kilowatts (kW) or megawatts (MW). It is determined by the local utility provider based on infrastructure, transformer size, and service agreements.
- Standard commercial capacity ranges from 200 to 800 amps for small users
- Industrial users may require 1,000 amps or more, often at 480V three-phase service
- Capacity depends on proximity to substations and feeder line strength
Influences Operational and Equipment Needs
Power capacity must match the demands of industrial operations such as machinery, HVAC systems, lighting, and automation. Undersized electrical service can limit production or require expensive upgrades.
- High-demand uses (e.g., manufacturing, cold storage, data centers) need robust supply
- Capacity planning includes peak loads, start-up surges, and future expansion
- Backup systems (generators or batteries) may be required for reliability
Confirmed by Electrical Plans and Utility Coordination
Exact capacity is verified through site electrical drawings, utility service agreements, or by contacting the local electricity provider. Engineers design the system based on verified load requirements.
- Electrical engineers provide load calculations and transformer sizing
- Utility companies confirm available service and upgrade options
- Site inspections and panel labels also indicate installed capacity