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*Materials cost for a 18650 cell (Lithium Ion) is $1.25 (about 4W) - [http://www.tms.org/pubs/journals/jom/0809/daniel-0809.html] | *Materials cost for a 18650 cell (Lithium Ion) is $1.25 (about 4W) - [http://www.tms.org/pubs/journals/jom/0809/daniel-0809.html] | ||
*Lithium is $40/lb - [http://en.wikipedia.org/wiki/Lithium#Production] | *Lithium is $40/lb - [http://en.wikipedia.org/wiki/Lithium#Production] | ||
*According to this source - [https://books.google.com/books?id=JuLko8USApwC&pg=PA145&lpg=PA145&dq=nickel+reserve+to+run+out+in+100+years&source=bl&ots=oSA-jYXBFA&sig=DXze6y4lHT3ODKWW5DpkJVneCig&hl=en&sa=X&ei=ohSdVI_uO9H2yQSQs4HgCw&ved=0CCYQ6AEwAQ#v=onepage&q=nickel%20reserve%20to%20run%20out%20in%20100%20years&f=false] - we have 100 years of nickel reserves, nad 200 years of iron and aluminum. | |||
Revision as of 08:01, 26 December 2014
- World Military Spending - $1.7T
- US GDP - $17T, and Government Budget- $7T
- World GDP - or GWP - $85T
- World energy use - 144 PWhr
- USA Military Spending - $640B - $2k per capita spending
- USA Trillion Military Budget - [1]
- $40B organics market - http://www.ers.usda.gov/topics/natural-resources-environment/organic-agriculture/organic-market-overview.aspx. That makes it
- Annual sustainable forest yield of 12.5B cubic meters or 105 exajoules - [2], p. 615
- Annual energy use by USA - 94 exajoules
- US energy consumption by sector - 40% electricity, 30% transportation - [3]
![[3]](http://en.wikipedia.org/wiki/Energy_in_the_United_States#mediaviewer/File:US_Energy_Consumption_by_Sector_2007.PNG){kind=link}
- Total USA energy use - 25 PWhr - [4] - (petawatt hours (See Metric Prefixes))
- Equivalent to 90 exajoules, consistent with Renewable Energy "Blue Bible" above.
- 250GW of PV is installable on existing rooftops - Cosservative estimate (50% of residential rooftops) - [5]
- Per year, let's take average insolation as 6 hours per day * 365 days - or 550 TWhr per year. That is 2% of USA's energy use, or 5% of USA's electric use. This is JUST RESIDENTIAL ROOFTOPS. Needs to add commercial rooftops, parking lots, roadway medians.
- USA road density - 67 km/ 100 sq km of area - [6]
- USA area - 10 million sq km
- USA roads - 6.7 million km. Assume an average road is 2 lane with shoulder - each lane has 12 foot (3.7m) standard in the USA - [7] - or an area of about 100,000 sq km. This could power 1/4 of the world's energy needs (oil, nukes, solar)
- Area required to power all of the world with PV is 400,000 sq km - [8]
- Total forest area of the world - 4 billion hectares - [9] - 30% of land area of world.
- Total farmland area worldwide -
- Total land area - 150M sq km - google
- Total agriculture land - 33% of world land according to FAO - [10]
- Energy per capita US vs Switzerland - As an indicator, the average energy use per person is 12,000 watts in the USA but only 3,000 in the Switzerland - [11]
- Percentage of USA energy by source. Coal electricity is 40% - [12]
- Half of USA rooftops could replace all coal electricity in the USA - [13]
- World electricity production 2009 - 20PWh - [14]
- Area of all cities compared to world land area - 0.5% - [15] - or 750,000 sq km.
Other
- Average driving distance - 13.5k miles/yr - USA - [16]
- Average commute, USA - 14 miles - [17]
- Tesla Model S battery - $12k for 10 years of service - [18]
- This source says 5 years of service - [19]
- Given $1200/year battery costs of Tesla Model S, cost of fuel or electricity is $1700 - no savings - between the electric and regular fuel option approximately at the 15,000 mile per year mark - according to cost calculator at [20]
- Lithium Ion batteries - predicted to go down to under $200/kWh -[21]
- Nickel-Iron battery energy density - 50Wh/kg - [22]
- Lithium reserves - 13 million tons worldwide - [25]
- One study shows there are supplies for EVs until 2100 (about a 100 year supply)