The less power the device consumes, the less money you have to lay out on solar panels. Seeing how expensive panels are, it's worth optimizing the device. If you want a full computing environment and OS X, the Air is almost certainly your best bet.
There are commercially available solar kits (with/without external batteries) which are rated to run/charge MacBooks/MacBook Pros: I forget the name of the company/ies selling them, but I'm hunting up that information for myself, so I'll repost it here.
That Hemingwrite is hella neat, Cory5412. Hope it launches at a reasonable price.
Along similar lines, if you just need a machine for writing or limited computing, one could look at a number of vintage systems: Amstrad NC-100 Notepad, Cambridge z88, Tandy TRS-80 Model 100, Psion 5MX, Apple eMate, Alphasmart Dana.
There are commercially available solar kits (with/without external batteries) which are rated to run/charge MacBooks/MacBook Pros: I forget the name of the company/ies selling them, but I'm hunting up that information for myself, so I'll repost it here.
That Hemingwrite is hella neat, Cory5412. Hope it launches at a reasonable price.
Along similar lines, if you just need a machine for writing or limited computing, one could look at a number of vintage systems: Amstrad NC-100 Notepad, Cambridge z88, Tandy TRS-80 Model 100, Psion 5MX, Apple eMate, Alphasmart Dana.