What is megawatt?
A megawatt is a unit of power equal to one million watts. It is used to rate the output of power plants, large industrial facilities, and grid-scale renewable energy installations.
Real-world uses
Megawatts describe the output of power plants, wind turbines (typically 2–15 MW each), and large solar farms. A modern natural gas peaker plant might produce 50–500 MW. Data centres may have power demands of tens to hundreds of MW. Grid operators manage supply and demand in MW.
History
As electrical grids grew through the 20th century, the megawatt became the standard unit for power station output and grid management. It enables comparisons across coal, gas, nuclear, and renewable generation sources on a common scale.
Common mistakes
Confusing MW (power) with MWh (energy). A 100 MW power plant running for 10 hours generates 1,000 MWh (1 GWh) of energy. Also, not distinguishing between MW of capacity (nameplate) and MW of actual output (which varies for renewables).
What is kilowatt?
A kilowatt is a unit of power equal to 1,000 watts. It is commonly used to rate electric motors, heating systems, solar panels, EV chargers, and industrial equipment.
Real-world uses
Kilowatts are used for rating home electrical systems, electric vehicle charging speeds (Level 2 chargers: 7–22 kW), solar panel array output, electric motors in appliances, and small generators. A typical household may have a peak demand of 3–10 kW.
History
As electricity supply systems expanded in the late 19th century, the kilowatt became the practical unit for measuring power demands and generation capacities beyond the range of single watts. Its adoption enabled standardised rating of motors, generators, and electrical infrastructure.
Common mistakes
Confusing kilowatts (kW, power) with kilowatt-hours (kWh, energy). A 7 kW EV charger running for 2 hours delivers 14 kWh of energy. Also, mixing up kW and kVA in electrical specifications—kVA is apparent power, not real power.
When is this conversion used?
Converting megawatt to kilowatt is useful in the power domain when comparing values across different measurement standards or applying formulas that require a specific unit.
Worked examples
1 megawatt = 1,000 kilowatt
1 kilowatt = 1,000 watt
How to convert megawatt to kilowatt
To convert megawatt to kilowatt, multiply the value by 1,000.
To convert kilowatt back to megawatt, multiply by 0.001.
Measurement standards
The watt is the SI derived unit of power, defined as one joule per second (kg·m²/s³). Horsepower remains in widespread informal use, particularly in the automotive industry, but has no single universal definition across regions.
Did you know?
The human body at rest produces about 80 watts of power — roughly enough to keep an incandescent light bulb glowing. During intense exercise, a trained cyclist can sustain over 400 watts, and elite sprinters briefly exceed 2,000 watts.
Quick reference: megawatt to kilowatt
| megawatt | kilowatt |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Common values
| megawatt | kilowatt | |
|---|---|---|
| LED light bulb | 0.00001 megawatt | 0.01 kilowatt |
| Desktop computer | 0.0003 megawatt | 0.3 kilowatt |
| Microwave oven | 0.001 megawatt | 1 kilowatt |
| Small car engine | 0.075 megawatt | 75 kilowatt |
| Wind turbine (large) | 3 megawatt | 3,000 kilowatt |
Available Power units
More megawatt conversions
- Convert megawatt to watt
- Convert megawatt to kilowatt
- Convert megawatt to horsepower (mechanical)
- Convert megawatt to gigawatt
- Convert megawatt to milliwatt
- Convert megawatt to microwatt
- Convert megawatt to BTU per hour
- Convert megawatt to kilocalorie per hour
- Convert megawatt to ton of refrigeration
Assumption: horsepower values use mechanical horsepower.