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Monday, November 4, 2013

Energized!


View of my solar panels
So my panels are up and running.  Last Thursday the folks came out and flipped the switch to start producing power.  And of course it had to be an overcast day.  And the next day it rained.  Such a bummer.  However, last weekend (and today) the sun is shining and I'm producing some power!  I checked it multiple times this weekend and I myself producing about 1.1 kW of power. Cool!

Zero Watts.  So disappointing...
The Tigo system is hooked up as well.  I can't say much about it because I still haven't gotten my login information so I can view what's going on.  And the unit at my house won't give me any information until it connects with their servers online.  What a drag!  Greenspring told me this was supposed to be done Thursday and I'd get the login information on Friday.  Well...it's Monday and still nothing.

Tigo Unit not telling me anything.  Boring...
Overall, I'm happy with the install.  That being said, I have a couple of critiques for Greenspring Energy:

1)  Be honest with the payback.  They gave me the information from PVWatts, install costs, and then estimated an ROI.  Here's what they didn't provide:
    a)  No Tax was included.  That was another ~$500 on top of the install cost.  $500 is roughly 2 years on the ROI.
    b)  Be realistic with the Duke Energy rate increases.  They used 5%/yr.  Yeah...that works for the last, oh 5 years.  But long term, it's been closer to 2%/yr.
    c)  If you conduct a solar eye, then adjust your power generation numbers! I had to ask if they did a solar eye and then ask for the results.  When I read the results, I found out that the actual estimate for power was 20% lower than what PV Watts was estimating, because it assumes an unimpeded ideal southern exposure.  I don't have that.
   d)  Solar panels degrade.  It's even one of the selling points by Sunpower...that it retains ~95% of its power after 5 years and 85% after 25 years.  That's a 0.25%/yr degradation (industry standard = 1%/yr).  Fantastic...well you gotta include those calculations in your ROI!  
   e)  Overall, my ROI was estimated at 13 years.  There's was much better.  Anybody Surprised?
   f)  Hopefully this changes, as I showed them the U.S. DOE System Adviser Model (SAM).  This model includes all the information I note above (except rate increases as user entered).

2)  I would've thought a high priced install would have looked nicer?  The panels themselves look nice\, but some of the other aspects could have been more professional looking.
  a) Below are some pictures with the install.  I'm a little disappointed that I now have a long conduit pipe running down the side of my house.  I will say that at least it's kind of hidden as it runs along the soffit. I'm probably going to have to paint it so it will blend in a little better.  Granted my breaker box isn't exactly located in the easiest place to get at. But, I will say that the wires could have been run down to the crawl space and then come out to the inverter.  I can't complain too much about it.  It definitely could have looked worse.  Judge for yourselves:
Conduit running along the side of the house to the inverter
  b) Next is the TIGO install.  Check out the wires.  Looks like of sh*tty, right?  When they were there I inquired about the wiring and they were offering to get one of those cheap-o black cord holders.  Appropriate thought, I'll give them credit.  But seriously...make it look nice.  Thus, why I went and purchased the nice wire hiding stuff.  And I may go further and have it go into the wall first, and then pop out and run along the base.  I'm not sure yet

Tigo wiring At least they put on wire ties, right?


Then there's where they came through the wall to hook up the communication to the panels via ethernet (gray wire). They ran it through the upper attic, then down to the bonus room attic knee wall (like I did when I wired the house for ethernet).  However, they just cracked my base plate and ran their wire behind mine.  Really?  You couldn't spend the $2 to buy a new plate to run it through?  And then in my bonus room attic, I spent a lot of time and effort putting up XPS insulation and sealing everything.  They just drilled a hole and ran the wire through...leaving a direct hole from the attic to my bonus room.  Couldn't even take the time to put at least piece of HVAC tape over it?!? (I did that temporarily)  Well...once I get the wire chase installed, I've already bought the new plate with the hole where I'll have the wire will run through.  And when that's done, I'll fill in the hole with the XPS with great-stuff foam.  I think I may still have ethernet materials left over....and if I do I may install an ethernet jack instead to make it look much more professional.

Wire coming through the back of the plate.

Once I get the TIGO login information, I'll post about it.  It's pretty cool stuff.

Oh...and I had to buy another adapter kit for my TED 5000.  Apparently it won't register less than zero...or I should say when it does it still reads a positive value.  So to correct my TED readings, I've had to spend $100 on a new MTU (transmitting unit) so I can measure the PV generation individually and then TED will subtract those values from my overall to give me a net (+/-) value.  I'm a little disappointed in this, but oh well.  I should have looked this up previously.

Stay tuned for more fun info!  

2 comments:

  1. Have you contacted customer service and talked to them about this stuff? I would love to know their response. We are not talking a $100 job here so they should be taking care of this stuff! IMHO...They should come and do the repairs plus supply the needed parts.

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  2. I will be contacting them. Writing this actually helped me get my thoughts "on paper" so I can provide a discussion.

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