What is the difference between Watts and Kilowatt hours (kWh)? 

The realm of solar energy can be clouded with technical jargon, leaving many scratching their heads. Fear not, as we dive into the distinction between Watts (W) and Kilowatt-hours (kWh), unraveling the mystery to help you make sense of the energy landscape.

The difference between Watts and Kilowatt hours (kWh).

Some of the technical language surrounding solar can be confusing. In this article, we break down the different units of energy you might come across, to make it more straightforward to understand and compare ‘apples with apples’. 

Watts (W) and kilowatt-hours (kWh) are both units of measurement for different aspects of electrical energy: 

Watts (W): Watt is a unit of power, which measures the rate at which energy is used or produced. It tells you how fast energy is being consumed or generated. It’s often used to describe the power rating of devices, like light bulbs, appliances, or solar panels. 

Kilowatt-hours (kWh): Kilowatt-hour is a unit of energy, which measures the total amount of energy consumed or produced per hour. It’s commonly used to measure your electricity usage on your utility bill. For example, one kilowatt-hour is equal to using one kilowatt (1,000 watts) of power for one hour. It represents the total energy consumed or produced. 

Combining Watts and Kilowatt-hours:

The simplest way of looking at these is that watts measure the rate of energy use or production, while kilowatt-hours measure the total amount of energy consumed or produced over a specific period of time. 

To convert from watts to kilowatt-hours, you need to multiply the power in watts by the time in hours and then divide by 1,000: 

kWh = (Watts × Hours) / 1000 

For example, if you have a device that consumes 1,000 watts (1 kW) and it operates for 5 hours, the energy consumption would be: 

kWh = (1000 W × 5 hours) / 1000 = 5 kWh 

So, the device operates at a constant power of 1,000 watts for 5 hours, it will consume 5 kilowatt-hours of energy. 

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