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This page is about energy in 2 main forms: fuel and electricity. | {{banner|There is currently no way to power the world without fossil fuels, until major technological breakthroughs happen.<br /><small>We have to consume less - this is not as hard as it sounds.</small>}} | ||
This page is about energy in 2 main forms: '''fuel and electricity'''. | |||
==Energy supply== | ==Energy supply== | ||
===The majority of energy comes from [[fossil fuels]] | ===The majority of energy comes from burning [[fossil fuels]] - the main cause of [[climate change]].=== | ||
[[File: energy-usage-by-source.png|thumb|World energy by source]] | |||
[[File: energy-usage-by-source.png| | {{minor|Fossil fuels include [[coal]], [[oil]] and [[natural gas]].}} | ||
=== | ===What about other energy sources?=== | ||
{{minor|Main reasons why non-fossil-fuel energy sources aren't being scaled up:}} | |||
{| class= | {|class="wikitable" style="margin-top:0" | ||
!Energy | !<div style="text-align:left">Energy Source</div> | ||
! | !<div style="text-align:left">Main Limitation</div> | ||
|- | |- | ||
|[[ | |[[Hydro]] | ||
| | |Geography | ||
|- | |- | ||
|[[ | |[[Nuclear]] | ||
| | |Needs uranium-235 which is too scarce* | ||
|- | |- | ||
|[[Solar]] | |[[Solar]] | ||
| | |Too many rare metals needed* | ||
|- | |- | ||
|[[Wind]] | |[[Wind]] | ||
| | |Geography | ||
|- | |- | ||
|[[ | |[[Biofuel]] | ||
| | |Causes [[deforestation]] and [[global hunger]] | ||
|- | |- | ||
|[[ | |[[biomass waste|Waste]] | ||
|Limited supply | |Limited supply | ||
|- | |- | ||
|[[ | |[[Geothermal]] | ||
| | |Geography - <small>in most parts of the world, it's only suited for [[heating]] & [[cooling]].</small> | ||
|} | |} | ||
Solar and wind are also limited by [[energy storage]].* | |||
<nowiki>*</nowiki>Limitations marked with an asterisk (*) are possible to overcome '''with the right innovations'''. | |||
For more details, read the wikipages of each energy source. Links are in the table above. | |||
==Energy demand== | ==Energy demand== | ||
[[File: energy-demand- | [[File:energy-demand-pie1.png|thumb|Pie chart of energy demand, based on countries where precise data is available.]] | ||
Since most energy consumption is bad for the planet, let's look at how it could be reduced - starting with the biggest pieces of the pie. | |||
{{mbox|Note: These actions are mostly directed at "first-world" countries, which use a disproportionately large amount of energy. In other parts of the world, consumption doesn't necessarily have to be reduced.}} | |||
{{minor|We could probably cut all energy consumption in '''half''', while barely losing any quality of life. It just requires some planning (both individually ''and'' as a society).}} | |||
[[ | ===Transportation=== | ||
Some things that would help: | |||
* [[Walkability]] - <small>organizing neighborhoods so things are in optimal locations, so people don't have to drive as far as often.</small> | |||
* [[Public transit]] done right. <small>Yes, there are plenty of ways for it to be done wrong!</small> | |||
* Working from home - <small>only suited for ''some'' types of work, of course.</small> | |||
* [[Carpooling]] - <small>yes, this takes some effort and coordination.</small> | |||
===Homes & buildings=== | |||
In buildings & homes, [[heating]] is the biggest piece of the pie (and [[cooling]] is the second-biggest). Energy-saving solutions haven't been added to this wiki ''yet''.{{rn}} | |||
A common misconception is that "saving energy" is all about turning off lights, turning off computers, etc. Those actions may be worthwhile but don't actually make a ''big'' difference. '''Other''' personal lifestyle choices do: | |||
===Consumerism=== | |||
More than a third of energy demand{{x|commercial vehicles + industrial/manufacturing + ''some'' commercial spaces}} is affected by '''what people buy''', and '''how much''' of it. | |||
To deal with this piece of the pie, we need: | |||
* [[Frugalism]] - i.e. '''buying less stuff!''' | |||
* Fighting against: [[business waste]], [[planned obsolescence]] and [[code bloat]]. | |||
* Fighting '''for''' [[right to repair]]. | |||
* [[Running new software on old computers]], perhaps? {{npn}} | |||
==See also== | |||
* | * [[Electric vehicles]] | ||
* | * [[Labor]] {{light|- another factor that affects quality of life}} | ||
[[ | * [[Energy supply solutions summary]] |