Everything in the universe requires energy to move, grow, reproduce and survive, without energy nothing can exist. Everything we manufacture, move, heat, cool, grow, build and throw away requires energy. Have you ever wondered how much energy is in the everyday things you own and use, does a computer have a bigger energy footprint than a TV? Or does your mobile phone use more energy than the microwave? If your car ran on baked potatoes how many miles per potato would you get? All these questions and more are answered with some surprising results.
Energy across the site is converted into Kwh so you can easily convert and compare very different products and activities, in fact you can directly compare anything in the database with anything else, for example you can convert the energy in a gallon of petrol into:
Gummy bears, Baked potatoes, AA Batteries, Hot water or Lightning strikes.
We've tried to make the results as accurate as possible so each page contains links to source material and assumptions about each study, every page also has a factoid section where users can add relevant information from around the web to backup claims and assumptions... or challenge them.


Embodied Energy – the energy used to make or do something; we will try to use a (per person per year) standard so comparisons can be made across products. For example if we wanted to compare air travel to watching TV we would take the average energy per person per year for both, which would be the average distance a person flies in a year against the average time spent watching TV in a year.

Energy Density – The energy held within a material or system that can be released to produce energy. Batteries are a good example but there are many others like, Coal, Wood, petrol etc burned to make energy or water behind a dam.

Energy Production – Any device or system that produces usable energy, wind generators, power plants, chemical reactions or solar panels. Energy can’t be created or destroyed so these systems are really just converting one kind of energy into another kind of energy that is useful to us. For example a wind turbine converts the energy in the wind, into electrical energy that we can use to power stuff.

Energy Use – Any system, process or device that uses energy. This is the opposite of the energy production process so instead of converting energy into a useable form it takes useable energy and converts it into work, Again we can work out the efficiency by taking the total energy in and measuring it against the work done. If we know the start energy and the energy produced we can easily work out the efficiency of the conversion method.

More energy footprints will be added over the next few months so bookmark us and come back soon.

Product Product Product Product Product Product Product Product Product Product Product Product Product Product

Refresh this page

To see another 14 random studies from the database