[RE-wrenches] Tigo to go?

[Marco Mangelsdorf]

Nowhere close.  I'm not a believer in using micro inverters for large
commercial projects.  Plus, I'm pushed to the limit on this particular
project to keep the costs down in order to satisfy the PPA investors.
Off-line I'll tell you what I'm charging.  I never thought I could/would go
that low.  But our industry (and I've been in the RE biz since the late
1970s) has been taken over by bean counters, financiers/bankers and lawyers.
(Sorry, Michael..)

 

marco

 

Marco,

 

I understand that the cost of electricity in Hawaii is pretty high so cost
can be justified. But don't forget the cost of bolting up each optimizer.
And the cost of doubling the number of cable connection, now and possibly in
the future. Complexity increase cost in the long run?

 

How closely have you looked at this? It looks like the Tigo is already about
1/4 the cost of an Enphase. So how close are you to moving from an optimizer
/ inverter combination to a microinverter?

 
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  

 

 

  _____  

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Marco
Mangelsdorf
Sent: Wednesday, June 08, 2011 7:59 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Tigo to go?

What's the feedback on these Tigo buggers?  I'm not talking about sites
where shading is an issue, but a nice big commercial roof with no shading.

 

Specifically, I'm talking about a 400-module system feeding into a single PV
Powered 100 kW inverter.

 

Anyone have an opinion whether spending another $15,000 on gobs of little
tiny Tigos would be worth it as far as increased kWhs production?

 

Obviously it's in Tigo's interest to say emphatically yes.  But I is
wonderin'.

 

marco

 

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