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What photo voltaic panels does Tesla use?

Since 2015, Tesla Power — a subsidiary of Tesla Inc. — has been creating and putting in photo voltaic panels within the U.S. Nevertheless, the photo voltaic panels that Tesla makes use of stay a thriller to many.

On this article, we shed some gentle on the matter by discussing the know-how behind Tesla’s photo voltaic panels and detailing the place they’re manufactured.

Moreover, we consider the standard of Tesla photo voltaic panels and decide in the event that they’re value your hard-earned money.


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What photo voltaic panel know-how does Tesla use?

Though Tesla Power has operated since 2015, it doesn’t personal its photo voltaic panel core know-how.

Tesla makes use of all-black monocrystalline photo voltaic panels with a black anodized aluminum alloy body from Q Cells by Hanwha, a Korean firm. Traditionally, Q Cells is a German photo voltaic panel producer; it was purchased out of chapter by Hanwha in 2012.

Tesla solar panel on a roof.
Supply: Tesla

Nevertheless, the phrase on the road is that Tesla continuously modifications the kind of photo voltaic panels they use for residential installations. 

Tesla gives little or no info about its photo voltaic panels. Regardless of this, we recognized two main sorts of photo voltaic panels the corporate makes use of in its PV arrays: the H-series and the S-series. Each fashions are Q Cells photo voltaic panels rebranded by Tesla.

These two photo voltaic panel sequence additionally use the identical glossy design with a low profile, hid edge, and no seen grid.

Though Tesla could be very discreet in regards to the photo voltaic panel know-how they use, we had been capable of establish the next three main options:

  • Half-cut cells.
  • Cut up panel design.
  • Monocrystalline silicon PERC know-how.

Half-cut cells know-how and cut up panel design

The half-cut cell know-how presents a number of benefits over conventional photo voltaic cells, together with:

  • Low vitality loss.
  • Elevated energy output.
  • Elevated sturdiness.

Each photo voltaic panel is fabricated from an meeting of photo voltaic cells. These photo voltaic cells are typically 6 x 6 inches. Nevertheless, half-cut cell know-how slices photo voltaic cells in half (3 x 3 inches). On this state of affairs, the photo voltaic panel is wired in two halves — a cut up panel design.

A 3×3 inch half-cut photo voltaic cell lowers resistive vitality loss as the electrical present doesn’t must journey as far. This ends in a 3% energy enhance vs. conventional photo voltaic cells. Moreover, it shortens the gap between the photo voltaic cell busbars resulting in an additional 1% energy enhance.

Lastly, half-cut photo voltaic cells are extra sturdy than common photo voltaic cells.

The cut up panel design reduces the loss attributable to partial shading. If one-half of the photo voltaic panel is shaded, the second half will nonetheless work at its full potential.

Cut up panel design with half-cut photo voltaic cells.
Single solar panel with regular solar cells.
Single photo voltaic panel with common photo voltaic cells.

Monocrystalline silicon PERC know-how in Tesla photo voltaic panels

Tesla makes use of monocrystalline know-how for its photo voltaic panels — the main photo voltaic tech that boasts an 85% market share.

Briefly, monocrystalline photo voltaic cells are fabricated from a single silicon crystal that offers them a glossy black look. These photo voltaic cells are free from defects; subsequently, the electrons can transfer freely, decreasing losses vs. a polycrystalline photo voltaic panel.

Typical monocrystalline photo voltaic cells have effectivity ranges above 20%, surpassing polycrystalline panels’ 15%-17%.

PERC know-how in Tesla photo voltaic panels

PERC stands for “Passivated Emitter and Rear Cell.” This know-how helps photo voltaic cells get well extra photons.

When photons hit a photo voltaic panel’s floor, they’re absorbed and transformed into electrons by the photo voltaic cell’s lively layer (silicon). Nevertheless, the effectivity of a business photo voltaic panel is barely round 20%. In different phrases, 80% of the photons should not transformed into electrons and can’t transfer by way of the silicon photo voltaic cell.

PERC know-how displays these “misplaced” photons into the photo voltaic cell

Very similar to each enchancment in photo voltaic know-how, the positive aspects are minimal. On this case, there’s a rise in effectivity of roughly 2% in comparison with conventional photo voltaic panels. 

That mentioned, over time, you’ll discover that enhance ends in a big distinction in electrical energy manufacturing. 

Notice to our readers: In 2021, Tesla introduced that it might begin producing its personal photo voltaic panels. Nevertheless, as of December 2022, Tesla remains to be utilizing Q Cells know-how. 

The place are Tesla photo voltaic panels manufactured?

Tesla photo voltaic panels are manufactured by Hanwha Q Cell services in China, Malaysia, South Korea, and the U.S. (Dalton, Georgia). Their manufacturing facility in Dalton, Georgia, is predicted to succeed in greater than 3GW — produced yearly — in 2023.

The one photo voltaic product Tesla manufactures within the U.S. is its photo voltaic roof, fabricated from photo voltaic tiles/shingles.

Are Tesla photo voltaic panels top quality?

Tesla makes use of photo voltaic panel know-how produced by Hanwha Q Cells, one of many market’s leaders. Their photo voltaic panels are made to the best high quality commonplace.

Though Tesla doesn’t absolutely disclose their photo voltaic panel specs, we recognized two most important fashions: the H-series and the S-series.

We’ve summarized their specs under:

Photo voltaic Panel Mannequin Effectivity Temperature Coefficient Guarantee 25-year Efficiency Guarantee Dimension With Body Peak Energy Output
T395H 20.1% -0.33%/°C 25 years 86% 74.4″x41.2″x1.57″ 395W
T400H 20.4% -0.33%/°C 25 years 86% 74.4″x41.2″x1.57″ 400W
T405H 20.6% -0.33%/°C 25 years 86% 74.4″x41.2″x1.57″ 405W
T420S 19.3% -0.34%/°C 25 years 85% 82.4″x40.9″x1.57″ 420W
T425S 19.6% -0.34%/°C 25 years 85% 82.4″x40.9″x1.57″ 425W
T430S 19.8% -0.34%/°C 25 years 85% 82.4″x40.9″x1.57″ 430W

In case you evaluate the standard and efficiency of Tesla’s photo voltaic panels to different tier-1 producers, you’ll discover that Tesla’s photo voltaic panels are fairly common. Its S sequence photo voltaic panels have an effectivity of 19.3% – 19.8%, whereas its H sequence panels have an effectivity of 20.1% – 20.6%

In distinction, SunPower presents photo voltaic panels with an effectivity of twenty-two.8%, whereas Chinese language firms, akin to JASolar, have effectivity ranges above 21%.

Tesla’s 25-year guarantee can be a normal within the business. The most effective photo voltaic panels include 30-year warranties (Solaria). Actually, SunPower Maxeon panels boast a whopping 40-year guarantee.

Truthfully, what makes Tesla photo voltaic panels stand out towards their competitors is their elegant, all-black design. As well as, their zep mounting system permits for seamless rooftop integration.

Are Tesla photo voltaic panels value it?

If Tesla photo voltaic panels are not one of the best in the marketplace, you may marvel if they’re value it.  

In our opinion, they’re value it as they’re very inexpensive.

Though Tesla is thought for its costly electrical automobiles, its photo voltaic panels are one of many most cost-effective in the marketplace. Their value is round $2.3/kW (earlier than the federal photo voltaic tax credit score), that’s decrease than the common value of $2.86/kW within the US.

As well as, Tesla presents a worth match assure on eligible photo voltaic panel methods.

Maybe, the one detrimental level is the shortage of flexibility of their photo voltaic system configuration; you’ll solely have the selection between a 4.80 kW, 9.60 kW, or 14.40 kW system.

Last ideas

In 2022, regardless of its bulletins, Tesla remains to be outsourcing its photo voltaic panels from Q cells. It advantages from all of the technological benefits of an already established photo voltaic firm, one of many market’s leaders.

Tesla doesn’t disclose a lot about its photo voltaic panel’s specs. Nevertheless, we discovered that their efficiency ranges are common in comparison with different high photo voltaic firms.

We consider Tesla photo voltaic panels stand out for his or her all-black, low-profile design and cheaper price.

In case you’re trying to purchase Tesla photo voltaic panels, we encourage you to ask for the mannequin’s identify and specification sheet so to evaluate them to different photo voltaic methods in the marketplace.



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