Convert kWh to kW with Cosmo Solaris
Your solar system needs 2-5 kW of power, depending on your home or business requirements. At Cosmo Solaris, we believe that understanding your energy use is the first step to making smarter choices. In this article, we will describe what a kilowatt hour (kWh) is, what a kilowatt (kW) is and how to convert from each. Once you learn this knowledge, we will explain how to convert from these units of measure. This is to give you a better understanding, but also a way to advance your home’s solar panel system.


What do a kilowatt-hour and a watt-hour mean?
A kilowatt hour (kWh), is a measurement of energy. When discussing energy usage in appliances within a household, 1 kWh refers to a 1-kilowatt (kW) appliance consuming energy for 1 hour. Another way kWh is used is to indicate the capacity of a battery bank, which we should consider when deciding what batteries to purchase.
A watt-hour (Wh) is simply a smaller version of the kilowatt-hour. 1 Wh is the amount of energy consumed by running a 1-watt (W) device in an hour.
Kilowatt-hours and watt-hours are both measurements of energy, and they are related units. The only difference is that one is much larger than the other. The conversion formula is:
1 kWh = 1,000 watt-hours
How do you convert from kilowatt-hours (kWh) to kilowatts (kW)?

After examining the above physical quantities, we see that kilowatt hours and kilowatts are both common units. One is a unit of energy, and the other is a unit of power. To understand the conversion relationship between them, we must first introduce another variable: operating time (T). The specific conversion formula is:
P (kW) = E (kWh) ÷ T (h)
In this formula, E is energy consumed over the period that the appliance is in operation. P is the power rating of the appliance in kW. T is the time in hours of operation. Based on this relationship, the kWh to kW conversion can be expressed as:
kW = kWh ÷ hr
To help you in understanding and using this formula, here is an example. Assume you choose an air conditioner with 1.5kW power that will be operated for 5 hours each day. To find the daily energy usage, multiply the power of the unit times the hours. For example, 1.5kW x 5h = 7.5kWh. This information can help determine if the energy usage is within the capacity of your system.
Why is the kWh to kW Conversion Important for Your Solar System?
- Assessing your system size: Your grid-connected panel and inverter sizes will depend on your peak power usage.
- Energy storage capabilities: Batteries measure energy in kWh but the capacity must match your appliances’ needs.
- Savings estimation: Knowing your need and usage helps with budgeting and estimating bills.
How Solar Equipment Helps With These Conversions?
Solar inverters are essential components as they convert the direct current (DC) that your panels produce into the alternating current (AC) that is used in your house. They manage the flow of power efficiently, ensuring that the generated electricity, measured in kW, is in balance with overall energy consumption (kWh). Choosing the correct inverter size means knowing your needs and consumption, and many contractors even consult estimation companies in USA to align energy requirements with project budgets. In addition, solar batteries can store energy that can provide backup power.

Start with Cosmo Solaris Converter
Cosmo Solaris provides high-quality solar products that will effectively convert DC into AC. When you choose us, you’re buying solar solutions that are reliable and will serve you for a long time, while being cost effective. For more information, contact our team today and switch to smart energy!