Eficiencia de los paneles solares: los paneles más eficientes de 2023
La eficiencia promedio de conversión de paneles ha aumentado del 15% a más del 22%, gracias a los recientes avances en la tecnología solar.
monocristalino versus policristalino
La eficiencia del panel solar depende de las células solares que contiene. La configuración eléctrica, la composición de la celda y los elementos externos afectan la eficiencia de una celda solar. La eficiencia de la celda está influenciada por varias variables, incluida la forma del cristal de silicio (como <anchor>monocristalino versus policristalino</anchor>). Los tres elementos más importantes a considerar antes de comprar un panel solar son la potencia máxima de salida, la garantía y la eficiencia del panel solar.
Monocrystalline vs. Polycrystalline Solar Panels (2024 Guide)
Monocrystalline vs. Polycrystalline Solar Panels (2024 Guide)

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Explore This Article

- Monocrystalline vs. Polycrystalline Solar Panels

- Compare Monocrystalline vs. Polycrystalline Solar Panels

- Are Monocrystalline or Polycrystalline Solar Panels Right for You?

- Our Conclusion

- Other Types of Solar Panels

- FAQ About Monocrystalline vs. Polycrystalline Solar Panels


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# Monocrystalline vs. Polycrystalline Solar Panels

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Homeowners can choose from three main types of solar panels: monocrystalline, polycrystalline, and thin-film. Monocrystalline and polycrystalline panels are the most common for residential installations, but they each have different costs, efficiency rates, and pros and cons.

We’ve broken down the key differences between monocrystalline and polycrystalline panels so you can determine the [best solar panels for your home.](https://www.thisoldhouse.com/solar-alternative-energy/reviews/best-solar-panels-for-homes)

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[Top Pick\
Best Solar Panel Leasing \
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![Sunrun Logo](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAC0AQAAAAAGRCxCAAAAAnRSTlMAAHaTzTgAAAAeSURBVFjD7cExAQAAAMKg9U9tB2+gAAAAAAAAgMcAG2wAAbpnne0AAAAASUVORK5CYII=)\
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4.5/5\
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[Best Customer Support\
Best Customer Support \
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![Palmetto Logo](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAADUAQAAAAAOsCMYAAAAAnRSTlMAAHaTzTgAAAAeSURBVGje7cExAQAAAMKg9U/taQmgAAAAAAAAAABuIEwAAUk7P/4AAAAASUVORK5CYII=)\
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4.4/5\
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[Best East Coast Installer\
Best East Coast Installer \
\
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4.4/5\
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Extensive solar product catalog for better customizationsFree system monitoring includedNABCEP-certified installers and designers](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-vp_{device_type}_brandcta&solar-energy-world)

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[Most Reputable\
Most Reputable \
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![Blue Raven Solar Logo](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAACcAQAAAAB+OovXAAAAAnRSTlMAAHaTzTgAAAAbSURBVFjD7cEBAQAAAIIg/69uSEABAAAAAI8GFBwAAe28mlQAAAAASUVORK5CYII=)\
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4.4/5\
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* * *

## 4 Best Solar Companies of 2024

Best Solar Leasing : [SunRun](https://homeservice-quotes.com/ms_widget_builder/sunrun-lead-form-hstoh/?subid=federal-solar-tax-credit-toh-t-sunrun)

Best Customer Support : [Palmetto Solar](https://homeservice-quotes.com/ms_widget_builder/palmetto-lead-form-hstoh/?subid=best-solar-companies-toh-t-palmetto)

Best East Coast Installer : [Solar Energy World](https://homeservice-quotes.com/ms_widget_builder/toh-solar-quote-form/?subid=federal-solar-tax-credit-toh-t-solar-energy-world)

Most Reputable : [Blue Raven Solar](https://blueraven.homeservice-quotes.com/ms_widget_builder/blue-raven-lead-form-hstoh/?subid=federal-solar-tax-credit-toh-t-blueraven)

## Monocrystalline vs. Polycrystalline Solar Panels

Monocrystalline and polycrystalline solar panels are the two [most common types of solar panels](https://www.thisoldhouse.com/solar-alternative-energy/reviews/types-of-solar-panels). Like all solar panels, they capture the sun’s energy and convert it into electricity. Both types use silicon, a material that’s abundant and durable.

The most significant difference between these two designs is the manufacturing process. Monocrystalline (mono) panels use a single silicon crystal, while polycrystalline (poly) panels use multiple crystals melted together. Here’s a breakdown of how each type of cell is made.

### Monocrystalline

### Polycrystalline

Mono panels contain monocrystalline solar cells made from a single silicon crystal. This crystal is grown in a lab and formed into a cylindrical shape called an ingot.

The silicon ingots are cut into thin discs known as silicon wafers, which then undergo a series of treatments to maximize their efficiency. The rounded edges are shaved into straight edges and chamfered corners.This nearly square, octagonal shape allows more crystalline silicon cells to fit into a solar panel, minimizing the wasted space that would exist between circular cells.

Using a single crystal improves the solar panels’ efficiency and results in a sleek black surface. However, the mono cell manufacturing process is more expensive, and the shaved pieces cannot be reused for other mono cells.

Poly solar panels also use silicon, but the manufacturing process is different. Whereas mono solar panels use a single silicon crystal, poly panels use multiple silicon fragments melted together.

To create polycrystalline cells, molten silicon material is typically poured into a square mold and cut into thin wafers once cool. The multi-crystalline process is simpler and less expensive than producing monocrystalline cells, and it creates less waste.

On the other hand, fusing the crystal fragments together creates small imperfections that hamper their efficiency compared to mono cells. These imperfections also give polycrystalline cells their distinctive speckled blue appearance.

Once the individual mono or poly solar cells are manufactured, they undergo further processing to become complete solar panels. A thin layer of conductive material, typically in the form of metal lines or “fingers,” is printed onto the front and back surfaces of the cells to collect the generated electricity. The cells are then sandwiched between protective layers of tempered glass to improve their durability.

* * *

## Compare Monocrystalline vs. Polycrystalline Solar Panels

Here’s an overview of the differences between mono and poly solar panels.

Factors Monocrystalline Panels Polycrystalline Panels

Color

Black

Blue

Cost

More expensive

Less expensive

Efficiency rate

Over 20%

15%–17%

Life span

25–40 years

25–35 years

Temperature coefficient

Lower temperature coefficient, more efficient in heat

Higher temperature coefficient, less efficient in heat

### In-Depth Comparison

Mono and poly panels both harness the sun’s power, and both are popular choices. Understanding the differences between the two will help you choose the best panels for your home.

### Aesthetics

Monocrystalline solar panels are black and blend in better with most rooftops. Polycrystalline panels are blue, making them more visible on roofs. You will also need more of them to produce the same amount of energy, which translates into a larger and more obtrusive array.

### Cost

Monocrystalline cells are more complicated and expensive to produce than polycrystalline cells. Mono panels can cost $1–$1.50 per watt, while poly panels fall between $0.90 and $1 per watt. However, your price will vary wildly, especially with the current oversupply on the market. These costs may not seem that different, but those pennies add up when installing a 5 kWh system. Also, the difference in efficiency means you’ll need more poly panels to power your home.

Homeowners can reduce [solar panel costs](https://www.thisoldhouse.com/solar-alternative-energy/reviews/solar-panel-cost) by using solar incentives, credits, and rebates. The [federal solar tax credit](https://www.thisoldhouse.com/solar-alternative-energy/reviews/federal-solar-tax-credit) provides a tax reduction equal to 30% of your solar panel installation costs, regardless of your solar panel type. Additional solar incentives and credits are available at the state and city levels. Check the [Database of State Incentives for Renewables and Efficiency](https://www.dsireusa.org/) (DSIRE) for more information.

### Efficiency

Solar panel efficiency indicates how well your panels convert solar energy into electricity. This rating is expressed in a percentage. For example, a panel with an efficiency rating of 22% will convert 22% of the sunlight it absorbs into usable energy. Efficiency rates vary due to differences in solar cell technology. Monocrystalline panels are the [most efficient solar panels](https://www.thisoldhouse.com/solar-alternative-energy/reviews/most-efficient-solar-panels) due to their improved solar cell technology, with rates over 20%. Polycrystalline solar panels have lower efficiency ratings in the range of 15%–17%.

### Life span

Both panels have a great life span, but mono panels last longer. Mono panels can last 30–40 years with optimal care and maintenance. Poly panels degrade a little faster and typically last 25–35 years with proper upkeep.

Many panels come with a 25-year warranty. However, the warranty period is not the same as [how long solar panels last](https://www.thisoldhouse.com/solar-alternative-energy/reviews/how-long-do-solar-panels-last#:~:text=High%2Dquality%20solar%20panels%20can,in%20efficiency%20and%20energy%20production.). Well-maintained solar panels will typically outlive their warranty by several years.

### Temperature Coefficient

Mono and poly panels also have different temperature coefficients due to their technology. The temperature coefficient indicates how well your solar panels perform when temperatures change. Panels are tested in standard conditions of 77 degrees Fahrenheit but remain at peak efficiency between 59 degrees Fahrenheit and 95 degrees Fahrenheit.

The higher the temperature coefficient, the more the panel’s power output declines in temperatures outside this range. Polycrystalline panels have a higher temperature coefficient, meaning they experience a more significant drop in efficiency as the temperature rises. Monocrystalline panels have a lower temperature coefficient and work well in heat.

\* _Cost data sourced from contractor estimates used by Angi._

* * *

CompanyStar RatingWarrantiesPayment OptionsLink

[![Sunrun](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAACWAQAAAADfoaixAAAAAnRSTlMAAHaTzTgAAAAcSURBVFjD7cExAQAAAMKg9U9tBn+gAAAAAIDPABNWAAHYI7cPAAAAAElFTkSuQmCC)](https://homeservice-quotes.com/ms_widget_builder/sunrun-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&sunrun) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/sunrun-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&sunrun)

4.5

10–25 yearsFull purchase, loan, lease, PPA[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/sunrun-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&sunrun)

[![Palmetto](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAACwAQAAAAAOVE6aAAAAAnRSTlMAAHaTzTgAAAAcSURBVFjD7cExAQAAAMKg9U9tDB+gAAAAAADgbxawAAH72FZnAAAAAElFTkSuQmCC)](https://homeservice-quotes.com/ms_widget_builder/palmetto-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&palmetto) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/palmetto-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&palmetto)

4.4

10–25 yearsFull purchase, loan, lease, PPA[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/palmetto-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&palmetto)

[![Solar Energy World](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAALZAQAAAAABh27zAAAAAnRSTlMAAHaTzTgAAABySURBVHja7cExAQAAAMKg9U9tDB+gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAM4Gb2gAAVy5k5UAAAAASUVORK5CYII=)](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&solar-energy-world) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&solar-energy-world)

4.4

25–30 yearsFull purchase, loan, lease, PPA[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&solar-energy-world)

[![Blue Raven Solar](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAACcAQAAAAB+OovXAAAAAnRSTlMAAHaTzTgAAAAbSURBVFjD7cEBAQAAAIIg/69uSEABAAAAAI8GFBwAAe28mlQAAAAASUVORK5CYII=)](https://homeservice-quotes.com/ms_widget_builder/blue-raven-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&blueraven) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/blue-raven-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&blueraven)

4.4

10–25 yearsFull purchase, loan[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/blue-raven-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&blueraven)

[![Freedom Solar Power](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAAzAQAAAAAF8QgiAAAAAnRSTlMAAHaTzTgAAAAXSURBVDjLY2AYBaNgFIyCUTAKRsGQBAAHxQAByLcLJwAAAABJRU5ErkJggg==)](https://homeservice-quotes.com/ms_widget_builder/freedom-solar-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&freedom-solar) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/freedom-solar-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&freedom-solar)

4.4

25 yearsFull purchase, loan[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/freedom-solar-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&freedom-solar)

[![Momentum](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAABDAQAAAACdUiUtAAAAAnRSTlMAAHaTzTgAAAAZSURBVEjHY2AYBaNgFIyCUTAKRsEoGHQAAAijAAFw4ZWyAAAAAElFTkSuQmCC)](https://homeservice-quotes.com/ms_widget_builder/momentum-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&momentum) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/momentum-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&momentum)

4.4

25 yearsFull purchase, loan, lease, PPA[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/momentum-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&momentum)

[![Elevation](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAACDAQAAAACMujuZAAAAAnRSTlMAAHaTzTgAAAAbSURBVFjD7cEBDQAAAMKg909tDjegAAAAAO4NEOMAAfNflsEAAAAASUVORK5CYII=)](https://homeservice-quotes.com/ms_widget_builder/toh-elevation-lead-form/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&elevation) [GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/toh-elevation-lead-form/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&elevation)

4.6

25 yearsFull purchase, loan, lease, PPA[GET QUOTE](https://homeservice-quotes.com/ms_widget_builder/toh-elevation-lead-form/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-ab_{device_type}_brandcta&elevation)

No results were found.

## Are Monocrystalline or Polycrystalline Solar Panels Right for You?

Monocrystalline panels are the right choice if you want the highest power output and efficiency or if you want less noticeable solar panels. A higher efficiency rating also means you’ll need fewer panels to power your home, making mono panels a good choice for roofs with less space.

Polycrystalline panels are more affordable but have lower efficiency ratings, so you’ll need more panels to run your home. This will also require more roof space. In addition, polycrystalline panels are more noticeable on your roof due to their blue color.

Keep in mind that it takes around six to 10 years to pay off solar panels. Though monocrystalline panels are more expensive upfront, you’ll generate more energy savings and potentially shorten [your payback period](https://www.thisoldhouse.com/solar-alternative-energy/reviews/solar-panel-payback-period).

For more information about choosing the right solar panels for your home, check out this video with heating expert Richard Trethewey and Mark Trout, Group CEO of Sunworks (formerly Chief Technology Officer of Vivint Solar):

* * *

## Our Top Solar Company Picks

## Sunrun

[![Sunrun](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAC0AQAAAAAGRCxCAAAAAnRSTlMAAHaTzTgAAAAeSURBVFjD7cExAQAAAMKg9U9tB2+gAAAAAAAAgMcAG2wAAbpnne0AAAAASUVORK5CYII=)](https://homeservice-quotes.com/ms_widget_builder/sunrun-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw2_{device_type}_brandcta&sunrun)

4.5

[Get Quote](https://homeservice-quotes.com/ms_widget_builder/sunrun-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw2_{device_type}_brandcta&sunrun)

We like [Sunrun](https://www.thisoldhouse.com/solar-alternative-energy/reviews/sunrun) for its four financing options, including its unique leasing options if you don’t want to own your system. This stands out to us because the other companies on this list don’t offer as many options.

Prepaid and leased systems also include a 25-year warranty with system service and maintenance, ongoing monitoring, and theft insurance. The company even offers financing plans for quality monocrystalline solar panels and products from trusted brands such as LG.

### How We Scored Sunrun

Sunrun earned 4.4 out of 5 stars based on our methodology. The company gained many points for its positive reputation, comprehensive leasing options, and well-rounded warranty coverage. It lost some points for is limited service selection.

- **Solar Equipment and Services (15 out of 25 points):** Sunrun provides solar panel and battery installation but uses third-party installers. Though this is becoming an industry standard, in-house installers typically yield better communication and quality. The company also doesn’t provide roofing services or energy audits but does offer quality active monitoring assistance.
- **Warranty and Performance Guarantees (19 out of 25 points):** Sunrun offers quality warranties, such as its 25-year manufacturer and labor warranty, but doesn’t include a performance guarantee.
- **Brand Reputation and Professional Certifications (13 out of 15 points):** Sunrun has one of the higher customer BBB ratings we’ve encountered, and the company maintains an overall positive customer reputation online.
- **Financing Options (13.5 out of 15 points):** The company doesn’t offer any in-house financing but provides more warranty coverage for customers interested in solar leasing than other providers, such as Palmetto.
- **Industry Experience (9 out of 10 points):** Sunrun holds 17 years of experience in the solar industry, making it a veteran compared to a newer company such as Blue Raven Solar.
- **State Availability (8 out of 10 points):** The company only serves 18 states.

### Pros and Cons

ProsProvides system monitoring that signals issues with your systemOffers diverse financing options to suit various budgetsProvides EV and solar battery solutionsConsLimited online information on solar incentive disqualification with leasesRequires added costs for the same coverage plans as leased and prepaid customersVaries solar battery availability by state

### Warranty and Financing

**Warranty**

Sunrun backs its systems with a 10-year comprehensive warranty which includes product, roof penetration, and workmanship coverage.

**Financing Options**

✔ Full purchase

✔ Loan

✔ Lease

✔ PPA

### State Availability

**Available in:** California, Colorado, Connecticut, Florida, Hawaii, Illinois, Massachusetts, Maryland, Nevada, New Hampshire, New Jersey, New Mexico, New York, Pennsylvania, Rhode Island, South Carolina, Texas, Vermont, plus Washington, D.C. and Puerto Rico.

### Reputation and Reviews

The company earned [DroneDeploy’s 2022 Guardian of Safety Award](https://www.utilitydive.com/press-release/20221121-sunrun-wins-dronedeploys-2022-guardian-of-safety-award/) for incorporating drone technology in its site assessments. In 2021 and 2022, Sunrun was recognized by Comparably with [14 awards](https://www.comparably.com/companies/sunrun/awards). Its accolades include Best CEOs for Diversity 2022, Best Company Culture 2021, and Best Company for Women two years in a row.

Sunrun currently holds an [A+ rating](https://www.bbb.org/us/ca/san-francisco/profile/solar-energy-equipment-dealers/sunrun-inc-1116-312886) from the BBB and is accredited. Former customers praised the comprehensive coverage for leased systems but complained about delayed installations, poor customer service, and poor communication with project managers. Additionally, some customers note being confused by Sunrun’s leasing and PPA options, though they also mention Sunrun is willing to discuss and clarify these plans.

## Palmetto

[![Palmetto](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAADUAQAAAAAOsCMYAAAAAnRSTlMAAHaTzTgAAAAeSURBVGje7cExAQAAAMKg9U/taQmgAAAAAAAAAABuIEwAAUk7P/4AAAAASUVORK5CYII=)](https://homeservice-quotes.com/ms_widget_builder/palmetto-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw4_{device_type}_brandcta&palmetto)

4.4

[Get Quote](https://homeservice-quotes.com/ms_widget_builder/palmetto-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw4_{device_type}_brandcta&palmetto)

[Palmetto Solar](https://www.thisoldhouse.com/solar-alternative-energy/reviews/palmetto-solar) offers a wide range of quality solar products and excellent customer service, including phone, email, and online chat options, an online service request portal, and a library of troubleshooting resources. Overall, Palmetto offers more customer support than other providers we reviewed, most notably through its tiered system protection plans and mobile app.

### How We Scored Palmetto Solar

Palmetto earned 4.4 out of 5 stars according to our methodology. The company scored more points for its comprehensive service selection and long-term protection plans. It lost some because of its standard warranty options and lack of production guarantee.

- **Solar Equipment and Services (20 out of 25 points):** Palmetto offers an excellent selection of solar services, including solar battery and electric vehicle (EV) charger installation, energy audits, and active monitoring.
- **Warranty and Performance Guarantees (16 out of 25 points):** The company’s warranty options don’t stand out as much as Sunrun’s. It offers industry-standard coverage for 25 years on products and 10 years on labor.
- **Brand Reputation and Professional Certifications (14 out of 15 points):** Palmetto has a highly positive online reputation on popular review sites such as the BBB. The company also screens its installers to ensure they’re certified with the [North American Board of Certified Energy Practitioners](https://www.nabcep.org/certifications/) (NABCEP).
- **Financing Options (13.5 out of 15 points):** Palmetto doesn’t provide in-house financing but offers all possible payment methods.
- **Industry Experience (8 out of 10 points):** Palmetto holds a decent amount of experience, with 15 years in the industry.
- **State Availability (8 out of 10 points):** The company serves 17 states.

### Pros and Cons

ProsGives access to customer support via email, chat, phone, and appOffers a tiered system protection planProvides an online solar savings calculator to estimate potential savingsConsLimits its active monitoring services to three yearsShorter roof leak and workmanship coverage than other installersSome online reviews mentioned permitting and installation delays

### Warranty and Financing

**Warranty**

Palmetto’s warranty protection includes a 25-year panel warranty, 12-year inverter warranty, 10-year workmanship warranty, and five-year roof penetration warranty.

**Financing Options**

✔ Full purchase

✔ Lease

✔ Loan

✔ PPA

### State Availability

**Available in:** Arizona, California, Colorado, Florida, Georgia, Illinois, Maryland, Massachusetts, Michigan, Nevada, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Texas, Virginia

### Reputation and Reviews

Palmetto Solar received Solar Power World’s [Most Forward-Thinking Contractor](https://www.solarpowerworldonline.com/2022/07/2022-most-forward-thinking-contractor-palmetto/) award in 2022. Inc. magazine recognized the company the same year with a [Power Partner Award](https://www.inc.com/profile/palmetto-solar). Palmetto also aims to provide solar energy to underserved communities with its [Get Solar, Give Solar program](https://palmetto.com/learning-center/blog/get-solar-give-solar).

Palmetto Solar is accredited by the BBB and has an [A+ rating](https://www.bbb.org/us/sc/charleston/profile/solar-energy-contractors/palmetto-solar-0663-34087904) from the site. While reading online reviews, we noticed that homeowners praised Palmetto for its dedicated installation managers and quality systems but mentioned very long waiting periods for permitting, plus installation delays.

## Solar Energy World

[![Solar Energy World](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAADWAQAAAABDeIITAAAAAnRSTlMAAHaTzTgAAAAfSURBVGje7cExAQAAAMKg9U9tCj+gAAAAAAAAAABeBiCaAAEBQGTmAAAAAElFTkSuQmCC)](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw7_brandcta&solar-energy-world)

4.4

[Get Quote](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw7_brandcta&solar-energy-world)

[Solar Energy World (SEW)](https://www.thisoldhouse.com/solar-alternative-energy/reviews/solar-energy-world) is one of the most robust and well-regarded solar installation companies. It boasts several impressive features, such as its 30-year manufacturer’s warranty. Its service area is limited, and it doesn’t offer energy auditing services. We like that SEW discloses what solar panels it primarily works with and that the panels are from trusted, quality brands such as [Qcells](https://us.qcells.com/) and [Silfab](https://silfabsolar.com/).

Roughly 11% of our surveyed solar users purchased their system from Solar Energy World.

### How We Scored Solar Energy World

SEW scored 4.4 out of 5 stars according to our methodology. The company received many points because of its warranty, which is longer than most other solar companies’ warranties. SEW offers a 30-year manufacturer’s warranty on all its solar panels and inverters, whereas many providers only offer 25-year warranties.

- **Solar Equipment and Services (18 out of 25 points):** The company is an ideal option for many basic solar products and services, such as solar panels and battery installation. It lost points because it doesn’t install EV chargers or perform energy audits.
- **Warranty and Performance Guarantees (19 out of 25 points):** SEW’s manufacturer and labor warranties are standout features, but the company doesn’t include any production guarantees with its work.
- **Brand Reputation and Professional Certifications (15 out of 15 points):** The company’s reputation is one of the best, with high BBB and Google Reviews ratings. We also found no active alerts or lawsuits.
- **Financing Options (13.5 out of 15 points):** SEW offers all possible solar payment options but doesn’t provide an in-house financing department.
- **Industry Experience (8 out of 10 points):** The company has been in business since 2009, so it received most of the points in this category.
- **State Availability (6 out of 10 points):** SEW limits its service area to eight East Coast states.

### Pros and Cons

ProsFeatures an extensive solar product catalog with trusted brandsIncludes free active monitoringHires NABCEP-certified installers and designersConsReviews mention communication issues with staffWarranty coverage varies by solar panel brandDoesn’t offer a power production guarantee

### Warranty and Financing

**Warranty**

SEW offers a 30-year manufacturer’s warranty on all purchased solar panels and inverters. However, coverage varies by brand, and the company doesn’t guarantee them with every panel option.

**Financing Options**

✔ Full purchase

✔ Loan

✔ Lease

✔ PPA

### State Availability

**Available in:** Washington, D.C, Delaware, Florida, Maryland, New Jersey, North Carolina, Pennsylvania, South Carolina, and Virginia

### Reputation and Reviews

The company landed on Solar Power World’s [2023 Top Solar Contractors List](https://www.solarpowerworldonline.com/2023-top-solar-installers/) in the No. 10 spot.

The BBB accredits SEW, and the company holds an [A+ rating](https://www.bbb.org/us/md/laurel/profile/solar-energy-design/solar-energy-world-llc-0241-236076130). Former customers praise the company for its professionalism, assistance with applying for financial incentives, and smooth installation process. However, some reported discrepancies in finances and scheduling.

## Blue Raven Solar

[![Blue Raven Solar](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPoAAACcAQAAAAB+OovXAAAAAnRSTlMAAHaTzTgAAAAbSURBVFjD7cEBAQAAAIIg/69uSEABAAAAAI8GFBwAAe28mlQAAAAASUVORK5CYII=)](https://homeservice-quotes.com/ms_widget_builder/blue-raven-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw3_{device_type}_brandcta&blueraven)

4.4

[Get Quote](https://homeservice-quotes.com/ms_widget_builder/blue-raven-lead-form-hstoh/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-sw3_{device_type}_brandcta&blueraven)

Blue Raven Solar has one of the best reputations for reliability and trustworthiness. It has won awards for its team and CEO, and customer reviews report great customer service and prompt installations. The company also stands out for its in-house financing, which includes 18 months of free solar energy.

Out of all solar brands in the market, 6.5% of our survey respondents chose Blue Raven.

### How We Scored Blue Raven Solar

Blue Raven received 4.4 out of 5 stars according to our rating system. The company scored the most points for its customer service reputation and warranty coverage. It also earned points for providing all standard solar panel services but lost some due to its limited financing options and lack of roof leak coverage.

- **Solar Equipment and Services (18 out of 25 points):** Blue Raven offers solar panel and battery installation, active monitoring services, and energy audits. However, it doesn’t offer solar roofs, EV chargers, or additional roofing services.
- **Warranty and Performance Guarantees (22 out of 25 points):** The company offers top-of-the-line warranties, including a 25-year workmanship warranty. The company earned points fo providing a performance guarantee, but its guarantee is shorter than many other providers. However, it doesn’t provide any roof leak coverage.
- **Brand Reputation and Professional Certifications (13 out of 15 points):** Blue Raven has high customer review ratings on its BBB profile and other popular review sites. The company uses in-house installers but doesn’t ensure they’re NABCEP-certified, which made it lose some points in this category.
- **Financing Options (12 out of 15 points):** Blue Raven offers some of the best in-house financing of the companies this list, but it limits this financing to solar loans. You may want to consider a different provider, such as Sunrun, if you’re looking for a lease or PPA.
- **Industry Experience (7 out of 10 points):** Blue Raven has less experience than other providers, with only 10 years in the industry.
- **State Availability (7 out of 10 points):** The company limits its service area to 19 states.

### Pros and Cons

ProsOffers SunPower’s high-efficiency panels and storage optionsProvides a unique in-house financing option which includes 18 months of free solar energyRecognized as one of the industry’s most reputable solar companiesConsOffers one of the shortest production guarantees among our reviewed companiesSome customer reviews mention poor communicationWorkmanship warranty falls slightly below the industry standard

### Warranty and Financing

**Warranty**

A Blue Raven system has a 25-year product warranty, a 10-year workmanship warranty, and a two-year production guarantee.

**Financing Options**

✔ Full purchase

✔ Loan

### State Availability

**Available in:** Colorado, Florida, Idaho, Illinois, Indiana, Kansas, Kentucky, Michigan, Minnesota, Missouri, Nevada, North Carolina, Ohio, Oregon, South Carolina, Texas, Utah, Virginia, Washington

### Reputation and Reviews

Blue Raven has won numerous awards from [Comparably,](https://www.comparably.com/companies/blue-raven-solar/awards) a site known for its company culture and reputation reviews. It also ranked No. 20 on [Glassdoor’s Best Place to Work in the USA](https://blueravensolar.com/?press=blue-raven-solar-honored-as-one-of-the-best-places-to-work-in-2021-a-glassdoor-employees-choice-award-winner) in 2021.

Blue Raven is accredited by the BBB and currently holds an [A+ rating](https://www.bbb.org/us/ut/orem/profile/solar-installation/blue-raven-solar-llc-1166-90013405). We noted that customers praised the knowledgeable staff and prompt installation but cited poor communication after completing projects. We analyzed several consumer reviews and found that some of these issues stem from the company’s financing department and third-party installers.

Read [our review of Blue Raven Solar](https://www.thisoldhouse.com/solar-alternative-energy/reviews/blue-raven-solar) for more information.

## Other Types of Solar Panels

Mono and poly panels are not the only available panel types. You can also install thin-film solar panels. These are made from thin layers of photovoltaic material deposited onto a backing such as glass, plastic, or metal.

Thin-film solar panels are black, thin, and flexible, which means they offer the most inconspicuous appearance. They’re also the least expensive of the three options, but they last only 10–20 years and have low efficiency rates between 9% and 15%. These panels work best for small solar installations, such as a shed or garage.

There are three main types of thin-film solar panels to consider:

- **Amorphous silicon** **(a-Si):** Though thin-film solar panels do not use silicone crystals, some do use amorphous silicon. This is the oldest and most established option. Amorphous silicon is much more flexible than crystalline silicon and cheap to produce. However, it is less efficient than other PV materials.
- **Cadmium Telluride (CdTe):** Cadmium telluride panels are another popular option. They offer a good balance of efficiency and affordability, and they perform well in hot climates. The biggest drawback is that cadmium is a toxic heavy metal, while telluride is relatively scarce.
- **Copper indium gallium selenide (CIGS):** Thin-film panels that use a mix of copper, indium, gallium, and selenide can achieve efficiency rates similar to polycrystalline panels. CIGS panels are also durable and work better in low light or extreme temperatures than silicon ones. However, they cost more than CdTe or a-Si panels.

It’s also worth noting that you have several options within the broader categories of mono and poly panels. One example is passivated emitter and rear cell (PERC) technology, an enhancement that boosts efficiency. PERC panels have a special layer on the back that reflect unused light back to the cell, giving it a second chance to be absorbed.

## Our Conclusion

Whether monocrystalline or polycrystalline panels are better for your home depends on your roof space, budget, and personal preference. Mono panels are more efficient and require less space but cost more. Poly solar panels are less efficient and need more roof space but are more affordable.

Monocrystalline and polycrystalline solar panels are available through most [solar companies](https://www.thisoldhouse.com/solar-alternative-energy/reviews/best-solar-companies). Request quotes from at least three solar companies to compare panels, services, and costs. Use the tool below to begin your search for your new mono or poly solar panels.

Get Estimates from Solar Experts in Your Area

Totally free, no phone call required

[Get Quote](https://homeservice-quotes.com/ms_widget_builder/toh-solar-lead-form-cam/?subid=solar-alternative-energy_monocrystalline-vs-polycrystalline-solar-panels-toh-zw2_{device_type}_brandcta&zipcode={zip_code}&toh-zw)

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## FAQ About Monocrystalline vs. Polycrystalline Solar Panels

### Which solar panel is better: monocrystalline or polycrystalline?

Monocrystalline panels are better in quality but more expensive. These panels have higher efficiency ratings and provide more power per panel, so it takes fewer panels to run your home. Polycrystalline panels are more affordable but have lower efficiency ratings, which means you’ll need a bigger array.

### Which type of solar panel is the most efficient?

Monocrystalline solar panels are generally the most efficient type available. Their single-crystal cell structure allows electrons to flow more freely, improving the energy conversion process. However, due to their high efficiency and complex manufacturing process, mono panels tend to be the most expensive solar panel option.

### Which type of solar panels works better in hot climates?

Monocrystalline panels have a lower temperature coefficient, meaning they work better than poly panels in hot, dry environments. However, they’re affected by cooler temperatures.

### What is the main disadvantage of monocrystalline panels?

The main disadvantage of monocrystalline panels is cost. They’re the most expensive type of solar panel due to their complex manufacturing process.

### What are the advantages of polycrystalline panels?

The advantages of polycrystalline panels include lower cost and less waste.

_To share feedback or ask a question about this article, send a note to our Reviews Team at_ [_reviews@thisoldhousereviews.com_](mailto:reviews@thisoldhousereviews.com) _._

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