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Housing/footprint: Difference between revisions
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If you have some idea how to estimate the land footprint of other materials, please start the {{talk}}. For now, let's hopefully assume it's small enough to ignore. | If you have some idea how to estimate the land footprint of other materials, please start the {{talk}}. For now, let's hopefully assume it's small enough to ignore. | ||
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===Energy=== | |||
To stay on topic, let's first look at the energy it takes to build the house. | |||
Next, let's look at heating and cooling. | |||
Lastly there's electricity. At this point we should count only the electricity that's used for things that ''aren't'' heating or cooling. | |||
Total energy: | |||
--> | |||
==General== | |||
The following calculations are based on US home energy stats that don't distinguish between the ''type of dwelling'' but distinguish between the ''type of energy use'': | |||
{{dp | |||
|usa.population | |||
|336997624 | |||
| | |||
|Using stat from 2021 | |||
}} | |||
{{dp | |||
|usa.home_electricity | |||
|1519 billion kilowatt hours / year | |||
|Electricity used in all USA homes | |||
|<cite>How is electricity used in U.S. homes?</cite><br /><nowiki>https://www.eia.gov/tools/faqs/faq.php?id=96&t=3 </nowiki><br />Stats from 2021.<br /><br />"Total consumption" | |||
}} | |||
{{dp | |||
|usa.misc_residential_electricity | |||
|901 billion kilowatt hours / year | |||
|Electricity not used for heating nor cooling | |||
|<cite>How is electricity used in U.S. homes?</cite><br /><nowiki>https://www.eia.gov/tools/faqs/faq.php?id=96&t=3 </nowiki><br />Stats from 2021.<br /><br />"Total consumption" minus "space cooling", "space heating", and "water heating". | |||
}} | |||
{{dp | |||
|usa.home_air_cooling_electricity | |||
|235 billion kilowatt hours / year | |||
|Electricity used for cooling the air in homes (i.e. air conditioning) | |||
|<cite>How is electricity used in U.S. homes?</cite><br /><nowiki>https://www.eia.gov/tools/faqs/faq.php?id=96&t=3 </nowiki><br />Stats from 2021.<br /><br />"space cooling" | |||
}} | |||
{{dp | |||
|usa.home_air_heating_electricity | |||
|207 billion kilowatt hours / year | |||
|Electricity used for heating the air in homes | |||
|<cite>How is electricity used in U.S. homes?</cite><br /><nowiki>https://www.eia.gov/tools/faqs/faq.php?id=96&t=3 </nowiki><br />Stats from 2021.<br /><br />"space heating" | |||
}} | |||
{{dp | |||
|usa.home_water_heating_electricity | |||
|176 billion kilowatt hours / year | |||
|Electricity used for making hot water (in pipes) in homes | |||
|<cite>How is electricity used in U.S. homes?</cite><br /><nowiki>https://www.eia.gov/tools/faqs/faq.php?id=96&t=3 </nowiki><br />Stats from 2021.<br /><br />"water heating" | |||
}} | |||
{{todo | |||
|Also need data on fuel consumption (natural gas) for water heating and air heating. | |||
}} | |||
{{calc | |||
|usa.misc_residential_electricity / usa.population | |||
|watts per capita | |||
}} | |||
The USA is known to be an energy-hungry country with a big carbon footprint. But when looking at ''only'' home electricity use, not including for heating and cooling, the energy demand is actually quite modest. | |||