TLDR; The quoting, purchase, and installation process was good and smooth, professional, without surprises, and timely. I'm generating more power than I use, now.
Who we are/What we got: We are a household of 4 in the Inner sunset with a monthly electrical bill of about $120 / mo. Two adults work at home. We have gas heat and an electric fan that drives that. We do not have an electric car. We ended up purchasing outright a 10 panel system that is estimated to generate 2.9kw. It cost roughly $20k before incentives of various sorts, of which there are a lot. Our expectation is we hit break even in 9-11 years. That shouldn't be a problem with incentives and tax deductions. We moved to the "net metering plan" with PG&E, so that we sell whatever power we don't use back to the utility, and once a year we pay (or receive a credit) for the difference.
It's been a few months since my luminalt rooftop solar was installed, and that's enough time to write a review that's useful.
Before/during the install
The quoting and pre-installation process went very smoothly. There were a couple of complications that we talked through, mostly about where the electrical conduit would come down off the roof and re-enter the house. I didn't want a giant metal pipe labeled "SOLAR ELECTRICAL" to run exposed along wall someplace visible through a bedroom. The installers and I looked at the problem and found a way to route it up through the basement pretty close to the electrical panels so I didn't have to suffer that.
The installation itself was very quick and the system turned on without incident.
Now that it's installed and has been running for a few months, I can see the results. I've posted some graphs from both PG&E and my solar array here: http://imgur.com/gallery/BrAUJ
How is it working out?
First things first, since it's been turned on, we have had net negative power consumption every month. Because we are thrifty at home about power usage, we have generated more power than we have consumed every single month. One month (June) we were away most of the month, and the panels generated and sold back just about all of the power. You can see that in this graph attached. That's pretty awesome.
How much do you use, and how much do you generate?
On any given day, depending on cloudiness, our 10 panels generate between 13.3 and 20 kwh. On a busy day, we consume 18kwh. Our system appears to be sized perfectly to our needs, with just enough extra capacity to ensure that our utility bill is minimized.
Isn't it too foggy in the Sunset to have solar?
Nope, the graphs tell it all. We're in the middle of a very foggy, cloudy and cold summer, and we're still generating more power than we use.
Did you do anything special with your appliances?
We have a refrigerator and washer and dryer that are pretty new, energy efficient models. Our main cooking stove is gas, but our oven is electric. To save money we cook a lot at home. Our kitchen is a big consumer of power in our home. We also have two adults who work at home all day, so their computers are on all the time.
Would you recommend Luminalt to do our solar install?
Yes! Several of my neighbors on my block had Luminalt do their installs, and everyone has the same, positive story. In every case the installation went smoothly and they're now consuming less power than they generate. read more