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Better Looking Solar Panels: System Aesthetics Comparison

By Solar Panel Installation Process No Comments

 

As a homeowner, solar panel efficiency and cost may not be the only two factors you’re considering when deciding whether or not to go solar.

To some, solar panels can appear to be an eyesore when set on a roof of otherwise uniform architecture.

This article will dive into the different solar panel color and framing options available to homeowners, and the pros and cons of each setup.

Solar Panel Colors: Blue vs. Black

Blue solar panels are made from polycrystalline silicon that is covered with an anti-reflective coating that optimizes efficiency and maximizes absorbing capacity.

The classic bluish shimmer is attributed to imperfections within silicon crystal formation that come from slight misalignments while melted silicon is being poured into the mold. These imperfections aren’t addressed in the manufacturing process because of the tradeoffs in producing more waste and using more energy.

Black solar panels are made from monocrystalline silicon that achieves a higher standard of purity.

There is an extensive alignment technique known as the Czochralski Process that aligns the utilized silicon into a single crystal formation. However, this process is resource intensive in energy consumption and wasted silicon.

Solar Panel System Aesthetics Types

There are five types of aesthetics available for home solar arrays:

  1. Silver Frame
  2. Black Frame
  3. Black on White
  4. Black on Black
  5. Advanced Black on Black

For clarification, open wire refers to the conduit being visible due to the arrangement of a given solar panel. Closed refers to the conduit being hidden within the panel frame, allowing for a tight fit and smoother finish.

 

1. Silver Frame: Silver frame, cells could be black or white, open wire

traditional silver frame, white backing, wired solar panelImage credit: Solar Power Brisbane

These are the traditional solar panels homeowners may recall when expressing dissatisfaction with the appearance of panels.

This design isn’t going anywhere any time soon, because this is the most cost-effective setup. There’s also a huge market for them among utility providers and other commercial customers.

Lower price point and higher efficiency due to better heat regulation from having contrasting colors maintain the desirability of these panels.

2. Black Frame: Black frame, cells could be black or white, open wire

black frame, white backing, wired solar panelImage credit: Joju Solar

Switching out the silver aluminum frame for a sleeker, fitted frame for the subtle touch with a generally subtle price increase. The white backing and lifted racking keep the system cool and efficient.

3. Black on White: Black frame, black cell, white backing, hidden wire

black frame, white backing, wireless solar panel

Image credit: LG Energy

The hidden wire component to this even sleeker design makes this panel style more versatile to shrink the gap between surface and panel. Less jutting out of the roof could lead to less infrastructure on your roof, possibly lower the cost of installation while adding aesthetic value.

4. Black on black: Black frame, black cell, black backing, open wire

black frame, black backing, wired solar panel

Image credit: Green Energy Group

This newer design is the first true all-black panel, completely hiding the waffle iron look that a white backing would normally show. These panels are less efficient because of the increase in heat absorption, but from afar, this sleek design fully encompasses a modern look.

5. Advanced Black on Black:  Black frame, black cell, black backing, hidden wire

Sunpower Maxeon, all black, wireless solar panel

Image credit: SunPower

SunPower Maxeon technology has made this tinted window look possible without compromising on meeting industry-standards inefficiency. Design meets utility in this high performing black panel that incorporates durable, non-corrosive materials to maximize panel longevity.

Solar Array Aesthetics Summary:

Frame Backing Wire
Standard White White Yes
Black standard Black White Yes
Wireless black Black White No
Pure black Black Black Yes
Most attractive pure black Black Black No

3 considerations for choosing the best looking solar panels:

  1. Cost: Black panels are more expensive, but the long-term aesthetic appeal and available cost savings could offset the difference for you.
  2. Sleekness: Knowing your preference for sleekness will help you determine if you should be getting monocrystalline or polycrystalline panels.
  3. Efficiency: Different kinds of panels affect the level of efficiency in converting solar energy into usable electricity.

Talk to one of our energy advisors today by registering on Solar.com’s revamped platform to know what the exact aesthetic and cost differences would be on your property. Enjoy exploring the potential cost savings and the convenience of our hassle-free solar experience!

SolarEdge Inverter Complete Review

SolarEdge Inverters: The Complete Review

By Solar Inverters: Types, Pros and Cons No Comments

 

SolarEdge is an Israeli-based company offering PV solar inverters.

Currently providing almost 90 percent of all residential power inverter needs, SolarEdge has quite the edge in the solar market.

What makes SolarEdge unique is their combined power optimizer and string inverter systems are a best-of-both-worlds solution between string inverters and microinverters.

A Brief Rundown on Solar Inverters

String inverters have traditionally been the standard in the solar industry. They send the power produced by solar panels to a central inverter that changes it from DC to usable AC power for your home.

Microinverters, on the other hand, convert DC to AC power at each individual panel and allow for monitoring and power regulation at the panel level. This is useful for homes that are located somewhere with shading from clouds, trees, or other buildings.

Read more on the differences between string inverters and microinverters here. Or watch the animated short below.

 

The SolarEdge Difference – Optimizers!

SolarEdge power optimizers are somewhere in between string and micros…

They allow panel-level monitoring and power regulation as with a microinverter, but the actual inversion from DC to AC still occurs at a central SolarEdge string inverter.

This is accomplished with SolarEdge power optimizers attached to each panel, as pictured below.

SolarEdge Power Optimizers with Solar Inverter
A classic SolarEdge setup

SolarEdge Inverter Efficiency

While efficiency standards for residential inverters are generally 95 to 98 percent, SolarEdge inverter plus power optimizers boast a maximum efficiency of 99.5 percent.

Here’s why SolarEdge inverters are so effective:

  1. They are more efficient than normal string inverters because they avoid loss of power caused by individual panel shading or malfunctioning.
  2. They are more effective than microinverters for larger systems because they are not limited by the cap of 21 microinverter panels, due to voltage regulations.

If panels are shaded, SolarEdge power optimizers reconfigure their output so that the combined voltage is roughly 350 volts. The end result is that an output drop in one or more panels does not impact the overall effectiveness of the others.

This is a huge advantage for power optimizers in general, and SolarEdge, in particular, leads the market here.

SolarEdge Power Optimized String Inverter Performance

Overall, Solar.com customers to report good experiences with SolarEdge inverters. Some reasons they list for their support are:

  • Inverters work well and are very quiet
  • Easy-to-use and thorough monitoring system
  • Mitigated shading or multiple angle issues
  • Optional battery connectivity for self-consumption and/or backup
  • Incredible reliability of hardware
  • Higher system output and module-level data logging

Value and Warranty of SolarEdge Inverters

The biggest value proposition of SolarEdge inverters is that they offer the benefits of both string and microinverters at the same time, at a price point between the two.

Systems are also completely expandable. Homeowners can add another array much more easily in the future if energy needs increase. This is a more difficult process with a traditional string inverter, which may require a second central inverter installation. And it’s less expensive than adding more panels with built-in microinverters.

The SolarEdge inverter itself has a 12-year warranty, and their optimizers have a 25-year warranty. There is also an inexpensive option to extend the inverter warranty to 25 years as well. Both warranties are on the higher end of industry standards, which typically fall between 5 and 12 years on average.

If you decide you like the idea of SolarEdge’s optimizers but want to go with another inverter brand, you can do that. SolarEdge built independent operation technology into their optimizers, so they can be used with most any other inverter.

SolarEdge Temperature Coefficient and Safety Features

Inverters function at full capacity when the surrounding air is cooler. When the ambient temperature is too warm, SolarEdge inverters reduce the current output to protect the equipment and prolong its life. It’s also a safety feature so that your system isn’t overloaded.

Another safety feature is SolarEdge SafeDC™ which automatically turns off your solar panels in case of a grid outage. This prevents a voltage surge, electrocution, or damage to your home. SolarEdge inverters are also battery-ready and fully integrated with Tesla’s Powerwall.

SolarEdge – The Top Inverter on Solar.com

All-in-all SolarEdge offers high-efficiency power optimizers and inverters at a competitive price. They also offer great design flexibility, fewer moving parts, comprehensive system monitoring, and industry-leading warranties. Not surprisingly, SolarEdge was the number one selected inverter through the Solar.com platform in 2017.

If you’re looking into a new home solar panel system, here’s a few things to keep in mind:

  • Be sure you’re choosing a qualified installer who’s familiar with all of the equipment and financing options available to you.
  • In terms of paying for the system, ownership through a cash purchase or loan will produce the best savings. Leases are another great option if you can’t take advantage of the 30% federal solar tax credit.
  • Use solar quote comparing platforms like Solar.com to easily see what the best installers in your area offer. They’ll compete online for your business, without you needing to hassle with negotiating.

Do you have a SolarEdge Power Optimized String Inverter? Let us know about your experience with it in the comments below.