peak load: meaning, definition, pronunciation and examples
C1Technical / Business
Quick answer
What does “peak load” mean?
The maximum amount of electricity demand on a power system over a given period.
Audio
Pronunciation
Definition
Meaning and Definition
The maximum amount of electricity demand on a power system over a given period.
Any maximum demand or usage level of a service, system, or resource during a specific time period (e.g., internet traffic, transportation, computing).
Dialectal Variation
British vs American Usage
Differences
Both use the term identically. 'Peak demand' is a slightly more common synonym in UK technical contexts.
Connotations
Neutral technical term. Carries connotations of strain, capacity planning, and potential for overload if not managed.
Frequency
Equally common in both technical and business registers in the US and UK.
Grammar
How to Use “peak load” in a Sentence
The grid must be able to supply [NUMERAL] MW during peak load.Utilities charge more to offset the costs of [PEAK LOAD].[PEAK LOAD] management is crucial for grid stability.Vocabulary
Collocations
Examples
Examples of “peak load” in a Sentence
adjective
British English
- peak-load period
- peak-load tariff
- peak-load management strategy
American English
- peak-load period
- peak-load pricing
- peak-load generating unit
Usage
Meaning in Context
Business
Discussing energy costs, infrastructure investment, and tariff structures (e.g., 'Our factory schedule avoids peak load to reduce electricity bills.').
Academic
In engineering, economics, or urban planning papers analysing system capacity and demand management.
Everyday
Rare in everyday conversation unless discussing energy bills or internet/data usage limits.
Technical
Precise term in electrical engineering, grid operations, data centre management, and network design.
Vocabulary
Synonyms of “peak load”
Strong
Neutral
Weak
Vocabulary
Antonyms of “peak load”
Watch out
Common Mistakes When Using “peak load”
- Using 'peak load' for a momentary, unpredictable spike (better: 'surge').
- Confusing 'peak load' with 'average load'.
- Using it as a verb (e.g., 'The system peak loads at 5 PM' – incorrect; use 'peaks' or 'reaches peak load').
FAQ
Frequently Asked Questions
No. 'Peak load' is the highest actual demand placed on the system. 'Maximum capacity' is the maximum the system is designed to handle. Peak load should be less than maximum capacity for reliability.
Yes. It's commonly used in computing (server load), networking (data traffic), transportation (rush hour), and any context involving cyclical demand on a service.
A strategy to reduce ('shave off') peak demand by using on-site generation (like batteries or generators) or by temporarily curtailing non-essential operations, thus lowering costs and grid strain.
'Base load' is the minimum, constant level of demand on a grid over a period. 'Peak load' is the maximum. Base load is typically served by power plants that run continuously, while peak load is served by flexible 'peaking' plants.
The maximum amount of electricity demand on a power system over a given period.
Peak load is usually technical / business in register.
Peak load: in British English it is pronounced /ˈpiːk ˌləʊd/, and in American English it is pronounced /ˈpiːk ˌloʊd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “To be at peak load”
- “To hit peak load”
Learning
Memory Aids
Mnemonic
Imagine a mountain's PEAK – the highest point. The LOAD is the weight or demand. PEAK LOAD is the highest demand 'weight' the system must carry.
Conceptual Metaphor
DEMAND IS WEIGHT / SYSTEM IS A CONTAINER (The grid/network bears the weight of demand; it has a capacity that can be filled to the peak).
Practice
Quiz
Which of the following is a primary strategy for managing peak load on an electrical grid?