Why do solar quotes use MWh?

Commercial-scale arrays produce hundreds of thousands of kWh per year, so MWh keeps the numbers readable.

What comes after MWh?

GWh (1,000 MWh) and TWh (1,000 GWh). National electricity consumption is reported in TWh.

Is 1 MWh enough to charge an EV?

Yes — about 13 full charges of a 77 kWh long-range battery.

MWh to kWh Converter | Megawatt-hours to Kilowatt-hours

Conversion Formula

kWh = MWh × 1,000

Multiply megawatt-hours by 1,000 to express grid-scale energy in the household unit shown on your electricity meter.

Complete Guide to Megawatt-hours to Kilowatt-hours Conversion

What is a Megawatt-hours?

A megawatt-hour (MWh) is 1,000 kWh, the working unit of commercial energy contracts, renewable generation reporting and wholesale electricity markets.

What is a Kilowatt-hours?

A kilowatt-hour (kWh) is the household unit of electrical energy: one kilowatt for one hour. Meters, tariffs and battery specifications all use it.

How the Conversion Works

This is a pure SI prefix step. Kilo means one thousand and mega means one million, so a megawatt-hour is exactly one thousand kilowatt-hours. No physical constants are involved and the conversion is exact.

Why This Conversion Matters

Energy reporting spans nine orders of magnitude, from a phone battery in watt-hours to national demand in terawatt-hours. Moving fluently between kWh and MWh is what lets a homeowner understand a utility-scale press release, and what lets a business compare its consumption against a supply contract.

Scientific Context

SI prefixes scale by factors of 1,000: kilo (10³), mega (10⁶), giga (10⁹), tera (10¹²). Grid operators publish demand in GW and consumption in TWh, both derived from the same watt base unit.

Step-by-Step Conversion Guide

Follow these steps to convert megawatt-hours to kilowatt-hours manually:

Start with your value in megawatt-hours

Example: You want to convert 1 MWh

Apply the conversion formula

Use the formula: kWh = MWh × 1,000

Calculate the result

1 MWh = 1,000 kWh

✓

Verify your answer

Use our calculator above to double-check your manual calculation.

Quick Mental Math Tip

Multiply megawatt-hours by 1,000 to express grid-scale energy in the household unit shown on your electricity meter.

Common Conversions

Megawatt-hours to Kilowatt-hours conversion table
Megawatt-hours (MWh)	Kilowatt-hours (kWh)	Kilowatt-hours → Megawatt-hours
0.1	100	0.1 kWh = 0.0001 MWh
0.5	500	0.5 kWh = 0.0005 MWh
1	1000	1 kWh = 0.001 MWh
2	2000	2 kWh = 0.002 MWh
5	5000	5 kWh = 0.005 MWh
10	10000	10 kWh = 0.01 MWh
25	25000	25 kWh = 0.025 MWh
50	50000	50 kWh = 0.05 MWh
100	100000	100 kWh = 0.1 MWh
500	500000	500 kWh = 0.5 MWh

When You'll Need This Conversion

Commercial energy contracts

Power purchase agreements and business tariffs are priced per MWh.

Understanding solar farm output

Convert a project's annual MWh into the number of homes it could supply.

Energy reporting and journalism

Move between household and national scale without losing a factor of a thousand.

Battery storage projects

Grid batteries are specified in MWh of capacity and MW of output.

Pro Tips for Accurate Conversions

Sanity-check the order of magnitude

A home uses about 3.5–5 MWh per year. If your answer is 500 MWh for a house, you slipped a prefix.

Keep power and energy separate

MW is a rate, MWh is a quantity. Contracts nearly always price the MWh.

Use MWh for anything above 10,000 kWh

It reduces transcription errors in spreadsheets and reports.

Common Mistakes to Avoid

Writing MW when you mean MWh

This is the most common error in energy reporting and changes the meaning entirely.

Capacity is MW; production over a period is MWh.

Dividing by 100 instead of 1,000

A factor of ten error that survives review surprisingly often.

kWh ÷ 1,000 = MWh, always.

Comparing installed MW to consumed MWh

A 1 MW solar array does not produce 1 MWh every hour — output depends on irradiance.

Multiply capacity by capacity factor and hours to get MWh.

History & Background

As electricity systems scaled from single city blocks to national grids, reporting units climbed the SI prefix ladder from watt-hours to terawatt-hours within a century.