Comments on: Day4 Energy takes it public http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/ Trends, happenings and innovations in the clean technology market Wed, 28 Jul 2010 23:54:49 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Anonymous http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/comment-page-1/#comment-1676 Anonymous Fri, 14 Dec 2007 00:45:05 +0000 http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/#comment-1676 <a href="http://energypriorities.com" rel="nofollow">EnergyPriorities.com</a> belongs on your list of Clean Links. EnergyPriorities.com belongs on your list of Clean Links.

]]> By: Anonymous http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/comment-page-1/#comment-1675 Anonymous Wed, 12 Dec 2007 21:41:15 +0000 http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/#comment-1675 As far as the difference it makes in the power getting to your inverter a 180W panel will deliver 180W (under STC). The only difference is a 180W Day4 panel will be slightly smaller than a 180W multi-crystalline panel from another manufacturer. As far as the difference it makes in the power getting to your inverter a 180W panel will deliver 180W (under STC). The only difference is a 180W Day4 panel will be slightly smaller than a 180W multi-crystalline panel from another manufacturer.

]]> By: Anonymous http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/comment-page-1/#comment-1674 Anonymous Wed, 12 Dec 2007 21:38:15 +0000 http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/#comment-1674 Day4 Energy does have a spec sheet on their website. The module efficiency (not to be confused with cell efficiency) of their panels is 14% compared to 12% for most quality multi-crystalline panels. Day4 Energy does have a spec sheet on their website. The module efficiency (not to be confused with cell efficiency) of their panels is 14% compared to 12% for most quality multi-crystalline panels.

]]> By: Anonymous http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/comment-page-1/#comment-1673 Anonymous Sat, 08 Dec 2007 00:58:01 +0000 http://www.cleanbreak.ca/2007/12/07/day4-energy-takes-it-public/#comment-1673 Perhaps you could inquire as a Journalist as to how much of a difference their contact technology makes in terms of power delivered to the inverter module. This seems like a stretch to me that the contact resistance would be a major source of power loss. Just saying that the contact resistance is 10x less gives me no clue as to whether the savings for a 1KW system is going to be 50W or half a watt, because I don't know how much power is lost to contact resistance in a "normal" panel. They should know, so it's odd they don't state that anywhere on their website. Actually I suspect I know why they don't state it. Perhaps you could inquire as a Journalist as to how much of a difference their contact technology makes in terms of power delivered to the inverter module. This seems like a stretch to me that the contact resistance would be a major source of power loss.

Just saying that the contact resistance is 10x less gives me no clue as to whether the savings for a 1KW system is going to be 50W or half a watt, because I don’t know how much power is lost to contact resistance in a “normal” panel. They should know, so it’s odd they don’t state that anywhere on their website. Actually I suspect I know why they don’t state it.

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