Ask Your Question
0

How do you figure out the quality of the solar panel itself that's included in a quote?

asked 2017-05-30 09:40:10 -0500

bburn17 gravatar image

Receiving quotes from various solar providers but each one includes different solar panel manufacturers and size etc. How can a consumer learn about the quality and reliability of different solar panels?

edit retag flag offensive close delete

4 Answers

Sort by ยป oldest newest most voted
1

answered 2017-09-30 20:21:59 -0500

this post is marked as community wiki

This post is a wiki. Anyone with karma >75 is welcome to improve it.

updated 2017-09-30 20:21:59 -0500

beasley7 gravatar image

What I found to be the best approach was to reduce it to a simple math problem. If you remove the hype from the sales people and ignore the grandiose claims of the marketing people, you can make an informed and profitable decision. The ability to use a spreadsheet will help. Once you get all the data, you can see which is the best buy in the near term or long term. Your spreadsheet needs to include things like degradation rate over time, efficiency, warranty, output, cost of grid electricity, financing cost vs cash, etc. You can even include expected hours of daylight to better gauge actual production. Once you have picked which panel, you can do a similar exercise for picking an installer. I researched panels and found Sun Power, LG and Panasonic were highly rated for efficiency and durability, but were also expensive. The math boiled down to a long-term or short-term decision. Easy peasy.

edit flag offensive delete publish link more
0

answered 2017-12-04 20:27:59 -0500

this post is marked as community wiki

This post is a wiki. Anyone with karma >75 is welcome to improve it.

updated 2017-12-04 20:27:59 -0500

https://news.energysage.com/what-are-the-most-efficient-solar-panels-on-/

You may also want to compare their warranties. I think you can find that info by searching the panel models here.

edit flag offensive delete publish link more
0

answered 2017-08-01 14:25:50 -0500

this post is marked as community wiki

This post is a wiki. Anyone with karma >75 is welcome to improve it.

updated 2017-08-01 14:25:50 -0500

energysage gravatar image

There are a lot of different product specifications that can determine a solar panel's quality, including its power rating and efficiency, temperature coefficient, durability ratings and warranties. EnergySage's Buyer's Guide has more information about each of these specifications and what they mean.

When you're comparing solar panel quotes that you've already received, it can be difficult to sift through all of the different specifications. That's why every quote from a solar installer on the EnergySage Solar Marketplace features proprietary solar panel ratings that use the panel's specifications to give you context about the products that you're being offered.

edit flag offensive delete publish link more
0

answered 2017-09-17 21:13:57 -0500

this post is marked as community wiki

This post is a wiki. Anyone with karma >75 is welcome to improve it.

updated 2017-09-17 21:13:57 -0500

leland-gohl gravatar image

EnergySage has a proprietary tool they developed with NREL to give you a rating on the panel. This is a good catch-all. Other than that, keep in mind the big questions with panels are: 1. Watts per panel? 2. Is the aesthetic nice? Completely black panels are the cleanest looking, especially on a black-shingled roof 3. Does it have a good warranty? 4. Did the company already file for bankruptcy? Think Suniva and Solarworld, the two American manufacturers.

This should answer the big questions. Keep in mind panels aren't like the newest car model. Instead, their efficiency has only changed slightly over the past decade plus. What's really changed is the supply chain, helping to drive down cost. Panels go up on your roof, and there aren't really any moving parts. Once they're up there, they don't make noise, and they don't move. All they do is produce power and help you save some money.

Hope this helps.

https://www.linkedin.com/in/lelandgohl/ (Leland)

edit flag offensive delete publish link more
Login/Signup to Answer

Question tools

Follow

subscribe to rss feed

Stats

Asked: 2017-05-30 09:40:10 -0500

Seen: 1,671 times

Last updated: Dec 04 '17