Differences

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--- solar_power [2008-02-20 07:07] – nik
+++ solar_power [2008-05-26 17:00] (current) – nik
@@ Line 3: / Line 3: @@
 light-> electricity
-notes/links
+====notes/links====
   * http://www.gosolarpower.com/solarpower/
   * http://www.solardyne.com/solporpow.html
   * http://sel.me.wisc.edu/Publications/publ.html
-increasing efficiency
+====increasing efficiency====
   * http://www.lbl.gov/msd/PIs/Walukiewicz/02/02_8_Full_Solar_Spectrum.html
-parts / suppliers
+====parts / suppliers====
   * http://www.globalsources.com/manufacturers/Solar-Cell-Components.html
   * http://www.siliconsolar.com/
@@ Line 18: / Line 18: @@
   * flexible thinfilm -> http://store.sundancesolar.com/powulflexthi.html
+==== guestimates ====
-=== notes ===
 <blockquote>
@@ Line 32: / Line 29: @@
   * US power grid capacity: 776 gigawatts
-IE, you'd need less than 1% of Texas using off-the-shelf solar cells to equal the power generating capacity of the entire US grid.
+ie., you'd need less than 1% of Texas using off-the-shelf solar cells to equal the power generating capacity of the entire US grid.
+</blockquote>
+or...
+<blockquote>
+Humanity uses around 1.5e13 W, and the Earth receives around 1.366e3 W per m² from the Sun (varies with year and month). Earth has a land area of around 1.5e8 km². Assuming 10% efficiency for photovoltaics, that means we need to cover around 1.1e5 km² with solar cells. That is around the land area of Cuba. -- Markus Sablatnig
 </blockquote>
-=== various ===
+==== various ====
   * http://www.sciam.com/article.cfm?id=a-solar-grand-plan&page=1
   * vertical multijunction (VMJ) cell http://wire0.ises.org/wire/glossary.nsf/H/O?Open&00005F7E
   * http://www.ensargroup.com/
   * "Solar cell directly splits water for hydrogen" > http://www.physorg.com/news122534699.html
 ----
-related: [[Renewable Energy]] / / [[Category Energy]]
+related: [[Renewable Energy]] / / [[Category Energy]] / / [[luminous:phoef]]