Lightning Solar & Electrical

LG Vs SunPower: A True Battle With Only 1 Winner

I can tell you right now, that this is one of the most common questions that every solar installer in the world will get asked. 

I would also say this question has been asked for decades, everyone wants to know the answer. 

Which should I go for, LG or Sunpower?
Which is better value for money?
Which of these panels are the best? Is one better than the other? 
LG vs Sunpower… Which would I choose (as an experienced solar installer)?

Well, where do I start. There is so much to cover to get the answer that we are looking for. I can also say, yes. There is a winner here in my eyes. 

Ok, so let’s dig in deep and look at both of these solar panels for a logical buyers perspective to find out which one is best

lg solar panels vs sunpower solar panels

LG Solar Panels Vs SunPower

I’m going to break this down into a few areas which I feel count the most. They are the main areas to consider when choosing between LG or SunPower solar panels for your home. 

I’ll also explain why they are important, and which areas you should really consider. For example, I usually tell homeowners not to worry too much about the solar panel efficiency. It’s always changing and evolving. 

SunPower and LG are two of the oldest, and most popular solar panel brands in the world. So how do they compare against each other?

People choose LG and SunPower because they are high quality, so which one is better?

It’s really hard to say. Both of these solar panels are super high in quality. This is the reason why they are both so popular. People buy LG and Sunpower based on their performance and quality. 

However, when I take a deep dive into their performance it does show that SunPower might have the lead here. To work this out I took a look into the degradation of both LG and Sunpower solar panels. 

SunPower guarantees that after 25 years, their solar panels will still perform at 92% of initial output. Whereas LG solar guarantees 90.8% after 25 years, which is just less. 

Although it may not seem a lot, when you add up each solar panel it does make quite a difference. This means that you will be getting more energy from a SunPower system after 25 years, over and LG solar system. 

So in saying this, I would say that Sunpower does perform better than LG in terms of quality and long term performance. If this is something that’s important to you, then Sunpower is your right system.

Sunpower's Performance Towers Over LG!!

sunpower is better than lg on performance

They both offer extremely good warranties, but LG just takes the lead...

Now both of these solar panels are providing extremely good panel warranties. Both LG and Sunpower have 25 year performance warranties guaranteeing a certain % of performance even after this period of time. 

Also, they are both offering 25 year product warranties for their solar panels. This is way ahead of every other solar panel manufacturer in the industry. 10 years ahead to be precise. The product warranty covers any faults or damage to the solar panels for 25 years. 

However, something that isn’t as obvious to others is how secure these companies are to back up their warranties. For example, if you purchased your solar panels today are these companies still going to be around in 25 years? 

This is where LG has come out on-top. Not only does LG provide solar panels but it’s also a multi-million dollar electronics provider. This is different to SunPower because they only manufacture solar panels. 

Although it’s highly unlikely, if something did happen to the industry then Sunpower would go bankrupt. Whereas LG solar would still be able to keep run using its different areas of business. 

For this reason, I think that LG has the better warranties of the two. Yes, Sunpower may provide a slightly longer performance warranty… but can they back that up in 25 years?

LG Hits Back With It's Backed-Up Warranty!!

lg has a better warranty than sunpower

SunPower solar panels manage to beat LG with its solar panel efficiency

Everyone knows that Sunpower solar panels are one of the most efficient in the industry. Shortly following are LG solar panels offering a similar conversion efficiency. 

For the Sunpower maxeon 3, they offer an incredible 22.6% efficiency. 
For LG NeON 2 you’re looking at 21.1% or NeON R 22%.

So yes, Sunpower solar panels are more efficient than LG panels. Essentially on paper, this means that Sunpower panels will convert more sunlight into energy. This would mean that you would get energy for cheaper, and pay off your system faster. 

How much does this really matter?

But… Does it really matter?

Considering the price difference then no… not really. 

Because Sunpower actually costs more than LG, it means the pay off time would be pretty much the same. It actually cancels itself out. 

Additionally, solar panel efficiency might not actually matter as much as you think. At the end of the day your system will be the same size. 

E.g. A 6.6Kw system is always going to produce 6.6kw of energy. Using solar panels with high conversion efficiency will help you generate more energy, but will cost more.

So at the end of the day, this should really be something that you prioritise when choosing between Sunpower or LG solar panels.

Especially when price matters, and you can get high quality, value solar panels from Jinko, Seraphim, Canadian or Longi

The Fight Continues...!!

sunpower is more efficient than lg solar panels

Here’s why LG has the better reputation and bankability…

Like I mentioned above, reputation and bankability should be something that you consider with these two solar panels.

You wouldn’t just buy a solar panel that didn’t have a good reputation or name for itself. Nor would you trust your warranty with a company lacking finance or close to bankruptcy. 

Warranties and performance are really what sets these solar panels apart from the crowd. It would seem that LG does have the better reputation and the better bankability when compared to Sunpower. 

This is down to it being such a big company with leading market share in the electronics industry as well. LG is more financially stable by the looks of things. They have also been around for much longer than Sunpower. 

In saying this, Sunpower is very financially secure so please don’t worry. It’s just a well known fact that LG has a bigger reputation.

This is most likely down to them being around for a lot longer, and manufacturing electronic appliances as well. They have a good reputation in general.

LG Dominates With Its Reputation & Bankability!!

lg has the better bankability over sunpower

LG costs less than SunPower, but is SunPower worth the extra money?

This is where it gets really interesting. LG solar panels are actually cheaper than Sunpower. I think this is the biggest point to consider. Because there is so little between these two amazing solar panels, the price goes a long way. 

Depending on where you are getting your quotes from, Sunpower could actually be a few thousand more than LG. When you look at this logically, you would expect (with such a heavy price increase) Sunpower panels to be much, much better. 

However, they’re really close. This is why I think LG might just take the lead. You will be getting more for your money with LG when compared to Sunpower. Simply because they offer such similar specifications, however LG is just cheaper. 

Without such a massive improvement in performance, warranty, efficiency etc it’s hard to warrant the price increase for Sunpower panels. Even 2% more efficiency wouldn’t make the biggest difference in the return on investment or amount of energy generated.  

LG Solar Panels Are Cheaper Than Sunpower's Panels!!

lg is cheaper than sunpower

How do they compare to cheaper solar panels like Jinko or Longi?

Of course it’s always good to compare these solar panels with budget ones like Jinko, Longi, Seraphim or Canadian solar panels. So here is a quick list of all the obvious wins and losses that LG and Sunpower have. 

The obvious wins

  • Higher efficiency 
  • Longer warranties 
  • More durable product 
  • Better reputation 
  • Strong bankability 
  • Cheaper energy

The obvious losses

  • Expensive 
  • All size systems will produce the same amount of energy 
  • Longer return on investment

Let’s look at Australia 2 highest quality solar panels in detail;


Key selling points;

  • 25 year product warranty
  • 25 year performance warranty 
  • Temperature coefficient 
  • 20.7% Efficiency (21.1% new model)
  • 12 busbar 
  • Low LID
  • Corrosion Resistance Certification
  • Multi Anti-reflective Coatings
  • Enhanced low light performance
  • High Wind Load Resistance
  • Positive Tolerance (0/+3%)
  • “CELLO” Technology
  • High Temperature Performance
lg neon 2 solar panel

Sunpower Maxeon 3

Key selling points;

  • 25 year performance warranty
  • 25 year product warranty
  • Temperature coefficient 
  • Conversion efficiency of 22.6%
  • Maxeon solar cells 
  • Low operating temperature 
  • Pure N-Type silicon cells 
  • 400W in size 
  • Shingled cells 
  • Low corrosion 
  • Solid metal foundation 
  • Anti reflective tempered glass
sunpower maxeon 3 solar panel

So, LG vs SunPower… Which is the winner?

Honestly, both of these solar panels are solid solar panels. They are two leading solar panel manufacturers in the world. Either one of these are going to be a really good investment for homeowners. 

If roof space isn’t an issue, and you have a large budget then why not splash out of Sunpowers aesthetic Maxeon 3. You will certainly have the best solar panels on your street. 

However, if you’re looking for high end solar panels that are more affordable the LG would be the best option for you. Really, you cannot make a bad choice by going with either one of these solar panels. 

After all, I will give my opinion though. If it was up to me I would go for LG because of the price point. If I didn’t have to worry about the budget I would go for Sunpower. 

Let me know what you would go for in the comments below 🙂

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Written By:

Luke Cove
Managing Director
Lightning Solar & Eletrical
local brisbane cec installer

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