• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Tips and Tricks HQ

  • Home
  • Blog
  • Projects
    • All Projects
    • Simple WP Shopping Cart
    • WP Express Checkout Plugin
    • WP Download Monitor
    • WP Security and Firewall Plugin
    • WP eStore Plugin
    • WP Affiliate Platform
    • WP eMember
    • WP Lightbox Ultimate
    • WP Photo Seller
  • Products
    • All Products
    • Checkout
  • Support
    • Support Portal
    • Customer Only Forum
    • WP eStore Documentation
    • WP Affiliate Software Documentation
    • WP eMember Documentation
  • Contact

The differences between Power (Watts) and Energy (Kilowatts-hour, kWh)

You are here: Home / General / The differences between Power (Watts) and Energy (Kilowatts-hour, kWh)

Last updated: March 22, 2010





Before you can start saving money by cutting cost on unnecessary electricity usage in an attempt to live a greener life (Essential tips to start living Green today), you need to understand Power and Energy and the units of power (watt) and energy (kWh), what they mean, how do you use these terms etc. I have tried to give a high level explanation on the differences between watt and kilowatt-hour (kWh). Feel free to add your thoughts through the comment are below.

What is Power and Energy?

Simply put, Power is the rate at which work is performed or energy is transmitted. Energy is the capacity of a physical system to perform work.

What is the difference between Watt and Kilowatt-hour (kWh)?

Watt is the unit of power whereas kilowatt-hour (kWh) is the unit of energy.

Watt indicates the rate of using energy in J/s. You can compare this to how fast water is flowing out of a water pipe. If you have a Light bulb that has a rating of 100 watt, it means that the light bulb consumes 100 J per second.



kWh is the unit of energy. You can compare this to the volume of water that comes out of the pipe. A 100 watt light bulb when used for an hour will consume 100 Watt-hour of energy which is 0.1 kWh of energy.

If you multiply the total energy usage kWh with charge per kWh (This should be on your electricity bill), you get your total Electricity cost.

Watt and Kilowatt-hour (kWh) practical example

  • Your electricity provider charges you 11 cents ($.11) per kWh.
  • You have an Electric Heater that consumes 1500 watts (1.5kw). You use the Electric Heater for 3 hours everyday.
  • For 3 hours it will cost you 1.5kw x 3hours = 4.5kWh x .11 = .495 cents (50 cents)
  • Over a month it will cost you .495 x 30days = $14.85

Related Posts

  • Essential tips to start living Green today

General electricity usage,  energy usage,  Living Green

Reader Interactions

Comments (7 responses)

  1. R F Munion says:
    July 24, 2018 at 10:06 am

    Finally an explanation I can understand! Just had solar put in and am trying to understand my solar app!

  2. rattana says:
    January 5, 2018 at 4:43 pm

    I’ve never bother to familiarize myself with how energy is translated until I own an electric car, Thank you for this blog.

  3. roland says:
    October 12, 2016 at 6:35 am

    I find your explanation very educative and helpful. Thanks

  4. Ali moradkhani says:
    November 3, 2011 at 12:26 am

    Thanks for putting much effort to make this blog. it helped me alot. thanks!
    Regards from Iran!

  5. Camille says:
    April 21, 2011 at 1:00 am

    great article.Could use some of your ideas, so we can save energy back at home.

  6. admin says:
    March 3, 2009 at 7:46 pm

    Hello Marta, I am glad you enjoyed this blog

  7. Marta Polten - Brasil says:
    March 3, 2009 at 7:24 pm

    First, sorry the bad english. Very good your area. I found a very good explanation. Facilitates understanding site in the same time to choose the appliances until you know that some appliances should not be connected at the same time as consuming energy in excess.
    I really enjoyed the site and materials on wordpress blog and your feed and subscribe.

Leave a Reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Featured & Popular Articles

Video Answers to Top WordPress QuestionsWordPress Optimization Tips and Tricks for Better Performance and SpeedEssential WordPress Security Tips - Is Your Blog Protected?WordPress Simple PayPal Shopping Cart PluginTop 15 Search Engine Optimization (SEO) Techniques I Forget to DoList of the Best and Must Use WordPress PluginsHow do I Start a Blog and Make Money Online?Good Domain Name Picking Tips for Your Blog SetupFind Out Which WordPress Web Hosting Company Offers the Cheapest and Reliable Web Hosting Solution

Featured WordPress Plugins

wordpress estore plugin
wordpress membership plugin
WP Express Checkout Plugin
WordPress Lightbox Ultimate Plugin
WordPress photo seller plugin
wordpress affiliate plugin

Recent Posts

  • Accept Donations via PayPal from Your WordPress Site Easil [...]
  • Buy Now Button Graphics for eCommerce Websites [...]
  • Subscription Button Graphics for eCommerce Websites [...]
  • Adding PayPal Payment Buttons to Your WordPress Sidebar Ea [...]
  • PayPal QR Codes [...]

Comment & Socialize

  • @Rodrigo Souza, Thank you f ...
    - admin
  • The example for 'slm_add_ed ...
    - Rodrigo Souza
  • @Ron, All the valid transac ...
    - admin
  • Hello, when people have sel ...
    - Ron
  • We have hte following featu ...
    - admin

Check out our solutions

View our WordPress plugin collection and start using them on your site.

Our WordPress Solutions

Footer

Company

  • About
  • Privacy Policy
  • Terms and Conditions
  • Affiliate Login

Top WordPress Plugins

  • Simple Shopping Cart
  • PayPal Donations
  • WP Express Checkout
  • WP eStore
  • WP eMember

Blogging Tips

  • How to Start a Blog
  • Selecting a Good Domain
  • Cheap WP Hosting
  • WP Video Tutorials
  • Simple SEO Tips

Search


Keep In Touch

Copyright © 2023 | Tips and Tricks HQ