Re: [RE-wrenches] Tigo to go?
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-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Tigo to go?
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-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Tigo to go?
Marco, The only argument you can make for a system like yours is to say that if the modules degrade at different rates, then the Tigo optimizers make sense. Otherwise, I can't see how it could be anything but a slight loss. Tough call for $15k. Other attributes like monitoring and shutting off for firefighters can help sweeten the deal. Bill. From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
