To view this page, you should have the most recent Java installed
32-bit JRE (Java Runtime Environment) 1.8.0_20.
This Applet will run online in your browser, but it is a hybrid you
can also download, install and run it on your own machine as standalone
application. It will start and run faster if you do that. It will also
work safely even if you have disabled Java in your browser.
This calculator will tell you how much it costs to do various tasks with
depending on where you live. It will tell you in your own local currency,
no matter where
you live on the planet. All you have to do is select your location (or a
similar power costs to where you live) and select the activity. This
help you figure out where you can most easily save money, and save the
planet in the
How are the Calculations Done?
PowCost has an internal list of locations and the cost per Kwh. After you
location and an activity, it multiplies together the cost of electricity
per Kwh at that
location, the time in hours of the activity, and an adjustment based on
exchange rates to convert into your local currency.
The raw information comes from many sources all over the Internet. If you
costs, please send them to me, any currency is ok, cost per Kwh. Please
feel free costs
any locations I have not mentioned, or to make requests for still more
If you have not already done so, switch from a
CRT (Cathode Ray Tube)
monitor to an
LCD (Liquid Crystal Display).
Use you laptop, tablet or cell-phone in preference to your desktop
Use headphones instead of loudspeakers.
If you fill your kettle with twice as much water as you plan to use,
you will use twice as much electricity to boil it.
You should turn off lights when you leave the room, even fluorescents.
When you first
start a fluorescent you use about one minute’s worth of power, not
night’s worth as urban legend would have you believe.
Though the use of electricity does not generate any greenhouse gases, the
generating it does, especially burning natural gas, oil or worst of all,
countries make their power in a different mix of ways.
Carbon dioxide emitted in electricity generation
emitted in electricity
emitted per kilowatt hour
of electricity generated.
Lower is better.
As you can see, the electric car takes 25
times as much
energy as an electric kettle. If the electric car were to replace the
gasoline car, the
electric grid could not sustain the immense extra load to recharge them. A
change is required, namely using much smaller, lighter vehicles, perhaps
more along the
lines of the Segway, the electric bicycle or a small single-passenger pod,
computer-driven at densities impossible for human drivers.
Java Requirements and Troubleshooting
is a signed Java Applet (that can also be run as an application)
to Power Cost Calculator.
You are welcome to install it on your own website.
If it does not work…
For this Applet hybrid to work, you must click grant/accept/always run on this site/I accept the risk
to give it permission to allow you to configure the look & feel.
If you refuse to grant permission, the program may crash with an inscrutable stack dump
on the console complaining about AccessController.checkPermission.
In the Java Control Panel security tab,
click Start ⇒ Control Panel ⇒
Programs ⇒ Java ⇒ Security, configure medium security
to allow self-signed and vanilla unsigned applets to run.
If medium is not available, or if Java security is blocking you from running the program,
configure high security
and add http://mindprod.com
to the Exception Site List at the bottom of the security tab.
Often problems can be fixed simply by clicking the reload button on your browser.
Make sure the Java in your browser is enabled in the security tab of the Java Control panel.
Click Start ⇒ Control Panel ⇒
Programs ⇒ Java ⇒ Security ⇒
Enable Java Content in the browser.
This signed Java Applet (that can also be run as an application)
needs 32-bit or 64-bit Java 1.7 or later.
For best results use the latest 1.8.0_20 Java.
It works under any operating system that supports Java
e.g. W2K XP W2003 Vista W2008 W7-32 W7-64 W8-32 W8-64 W2012 Linux LinuxARM LinuxX86 LinuxX64 Ubuntu Solaris SolarisSPARC SolarisSPARC64 SolarisX86 SolarisX64 OSX
You should see the Applet hybrid above looking much like this
If you don’t, the following hints should help you get it working:
If the above Applet hybrid appears to freeze-up, click
Alt-Esc repeatedly to check for any buried permission dialog box.
If you have certificate troubles,
check the installed certificates
and remove or update any obsolete or suspected defective certificates.
The only certificate used by this program is mindprodcert2014dsa.cer.
Especially if this Applet hybrid has worked before, try clearing the browser cache and rebooting.
To ensure your Java is up to date, check with Wassup.
First, download it and run it as an application independent of your browser,
then run it online as an Applet to add the complication of your browser.
If the above Applet hybrid does not work,
check the Java console for error messages.
If the above Applet hybrid does not work, you might have better luck with the downloadable version available below.
If you are using Mac OS X and would like an improved Look and Feel,
download the QuaQua look & feel
UnZip the contained quaqua.jar
and install it in ~/Library/Java/Extensions
or one of the other ext dirs.
Click the Information bar, and then click Allow blocked content. Unfortunately, this also allows dangerous ActiveX code to run. However, you must do this in order to get access to perfectly-safe Java Applets running in a sandbox. This is part of Microsoft’s war on Java.
Try upgrading to a more recent version of your browser,
or try a different browser e.g. Chrome, Firefox, SeaMonkey, Opera, Safari or Avant.
If you still can’t get the program working
click the red HELP button below for more detail.
If you can’t get the above Applet hybrid working
after trying the advice above and from the red HELP button below,
have bugs to report or ideas to improve the program or its documentation,
please send me an email at.
PowCost is free. Full source included.
You may even include the source code, modified or unmodified
in free/commercial open source/proprietary programs that you write and distribute. Non-military use only.