“ Since the output is 60Hz, the usual RFI filters for switch-mode apply. I've often wondered why the microinverters didn't output 3 phase. Instead... (read full comment) ” 

Posted on January 31, 2012 at 4:43 PM EST

“ But if you have C8 and it comes from carbon sequestered in the ground for a million years, how is that carbon free? I guess they mean no extra... (read full comment) ” 

Posted on January 6, 2012 at 5:59 PM EST

“ Great article! It's something I've known and good to see written up. I think the audience is web designers and the managers that keep asking for... (read full comment) ” 

Posted on November 29, 2011 at 1:56 PM EST

“ Nothing Without Web The photo is ironic-- the one example where a Chromebook is useless while almost all other devices are useful. Most airplanes... (read full comment) ” 

Posted on October 29, 2011 at 3:05 PM EDT

“ I agree-- flash makes more sense and can be almost as fast as RAM depending on the architecture. But disks aren't the reason the web is slow, and... (read full comment) ” 

Posted on October 17, 2011 at 7:00 PM EDT

“ I think there was a goof in the article-- people do care about efficiency (this battery is very good). The comment should have been, "People will... (read full comment) ” 

Posted on September 28, 2011 at 3:48 PM EDT

+ 1 more comment posted in this discussion

“ Snail-Like Speed It's not that Google Flight is fast-- it's that the usual search is incredibly slow and tedious to use. It's not just a "few... (read full comment) ” 

Posted on September 26, 2011 at 5:04 PM EDT

“ I agree that batteries make more sense-- from an economic and efficiency point of view. I'm skeptical of the claims of fuel cell cost predictions,... (read full comment) ” 

Posted on September 21, 2011 at 4:19 PM EDT

“ Kevn-- nice analysis for a first cut. You don't need to make an assumption on % of days without sun. Google "Solar Radiation Map" and you'll see... (read full comment) ” 

Posted on September 19, 2011 at 5:14 PM EDT

“ The catch: fixed computing load Yes, energy efficiency of computer hardware is advancing, and with a conscious effort to make equipment... (read full comment) ” 

Posted on September 14, 2011 at 3:47 PM EDT