9/4/2023 0 Comments Kwh to watts![]() It will help you to understand how your bill works. Understanding Kilowatt Hours will help you to understand how much energy you are using in your home. The value of understanding Kilowatt Hours Multiplied by 17 pence, these lights are costing £4.76 to run. This would mean that the lights are consuming 28 Kilowatt Hours in a single month. This would equal 35 hours a week and 140 hours a month. Let’s say that you have your living room lights on for 5 hours a day. ![]() Our Kilowatt Hour rate is still 17 pence, which means for every hour your lights are on they cost 3.4 pence. Remember that a Kilowatt is a thousand watts, and so two hundred watts used for one hour would be 0.2 Kilowatt Hours. In your living room you may have two 100 watt light bulbs in the ceiling. If you just put 17 into your calculator, then you would get 340. In this case 0.17, as it is 0.17 of a pound, or a 100. When calculating using pence, you should put a decimal point in front of the number. This would equal £3.40 of energy used per month to power your portable heater. You have therefore used 20 kWhs of electricity that month, which you multiply by 17 pence. Let’s say that you have your portable heater on for five hours a week, that means your heater is on for 20 hours per month. That means running the portable heater for one hour costs 17 pence. Let’s say your energy rate (found on your energy bill) is 17 pence per Kilowatt Hour. If you run that portable heater for 1 hour, then you have consumed 1 Kilowatt Hour. You have a portable heater that is rated at 1 Kilowatt. Confused? Let’s look at some real world examples FOCUS ON… portable heater To understand how much energy you have used, you simply multiply the Kilowatts by the number of hours in use. If you use an electrical item for one hour, then you will have used some form of Kilowatt Hour. It just takes time and the breaking down of each into its constituent parts.Energy is measured in hourly units. Most modern refrigerators are active around 33% of the time with the rest being minimal.Ī typical 80w camper fridge ÷ 3 (time in active mode) = 27 wattsĢ7w x 24 (hours in a day) = 648 watt hours which is 0.65kWh per dayĪs you can see, while it may look a little complicated at first glance, it really isn’t. There’s the constant rate to maintain temperature and the cycle rate which is when the system actively cools down the interior of the fridge. Refrigerators use different rates of energy. Another appliance most houses, caravans and campers use. ![]() How do we get that?ġ,100w x 10 (minutes used) ÷ 60 (minutes per hour) = Daily watt-hour consumption.ġ,100w x 10 ÷ 60 = 183 watt hours which is 0.18kWh per day It’s also an excellent opportunity to perform part hour calculations.Ī 1,100w kettle used for 10 minutes per day would use 0.18kWh. Every house and caravan needs one, so let’s start there. Let’s go through a couple of examples of watt and watt-hour calculation so you can see its relevance when assessing your energy needs.Ī kettle. While you can use calculators to give you an idea of how much you use in a day, it is much more exact if you identify everything that uses power and perform your own calculations. What’s the difference between watt and watt-hour?Īs you have probably figured out, a watt is a measure of power at a given time while watt-hour is a measure of power for a set period of time.īoth can be useful when specifying an off-grid solar system or calculating your power requirements. You can calculate kilowatt-hours using – kWh = Watt-hour x 1,000. You will often see kilowatt-hour (kWh) on your energy bill and on product descriptions for solar panels, wind turbines, battery banks and other energy products.Ī kilowatt-hour is the equivalent of 1,000 watt-hours and is just a higher level of measurement suitable for larger capacity devices. You can calculate watt-hours using – Watt-hour = Watts × Hours. Five watt-hours (5Wh) is one watt of flow for 300 minutes. One watt-hour (1Wh) is the equivalent of one watt of flow for 60 minutes. Watt-hourĪ watt-hour (Wh) is a measurement of power over a given time. You can calculate watts using – Watts = Volts x Amps. For example, a 45w LED light bulb will use over twice the ‘flow’ of electricity as a 20w LED bulb. The higher the number in watts, the more energy will flow through that device. That device could be an appliance, lightbulb or anything that consumes electricity. This unit describes the flow of energy through a device in a moment in time.
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