View of my solar panels |
Zero Watts. So disappointing... |
Tigo Unit not telling me anything. Boring... |
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 |
Tigo wiring At least they put on wire ties, right? |
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!
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.
ReplyDeleteI will be contacting them. Writing this actually helped me get my thoughts "on paper" so I can provide a discussion.
ReplyDelete