Counting - what do we count? watts? watts peak? Wm^2? GWhr/Acre/yr? $/W? LCOE? ROI?

Moving targets everywhere when it comes to counting and accounting for solar.

Here is a summary of land use rates for solar power:

http://www.greentechmedia.com/articles/read/What-Is-The-Best-Solar-Power-Plant-Technology-to-Cut-Land-Costs

Really neat to have it run together in one place. It has a huge utility bias of course. Rooftops have so many other services they are offering that disentangling the cost of land for those installations is a no go. There might be some way to compare by using parking cover structures... Anyhow, lots to learn here I think:

First was something called Direct Area

 

which is weird... (you can't build without ancillary-land slop so why analyze direct?)

  

so instead lets attend to the TOTAL AREA. (shown next)

That right-hand column is the meat and seeing the direct (whatever that is) vs total land. I think total land is more important. And 2-Axis CPV is looking pretty impressive. Even to me a CPV skptic (unhybridized at least) it is neat to see aperture (basically) given some respect.

OK... there is plenty more there to read and learn. More when I have had some digestive time.