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120 Watt Shade Tolerant Flexible Solar Panel - Sunpower A+ Grade 24.4% Efficient Cells

120 Watt Shade Tolerant Flexible Solar Panel - Sunpower A+ Grade 24.4% Efficient Cells

Regular price $639.00 USD
Regular price Sale price $639.00 USD
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These panels are ideal for mounting on a bimini, dodger or a curved deck surface. Mounting grommets, MC4 connectors and blocking diodes are included. These panel provide excellent performance when partially shaded by the boom, mast and equipment. They use the highest efficiency SunPower solar cells available. They are split into four quadrants that all operate independently so if one quadrant is shaded the other three have full power output. They put out 23 volts Voc and measure 21.3x42.1. Best to run between support bars, not over them to avoid cell damage. Lots more information here.

Ships Next Day UPS Ground from Denver or Michigan.

Specifications:

  • Model: CMP23115F-120-ST
  • Rated Power:  120 Watts
  • Peak Power Voltage (Vmpp): 19.6 Volts
  • Peak Power Amps (Impp): 6.1 Amps
  • Open Circuit Voltage (Voc): 23.1 Volts
  • Short Circuit Current (Isc): 6.5 Amps
  • Cell Conversion Efficiency: 24.4%
  • Dimensions: 21.3" x 42.7", 540mm x 1085mm
  • Weight: 6.4 lbs, 2.9 kg

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Customer Reviews - ⭐⭐⭐⭐⭐

Wiring Diagrams

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Federal Solar Tax Credits Extended!

Federal Solar Tax Credits Extended!

Good News for Solar Enthusiasts: Now Extended Through 2034!

The Inflation Reduction Act of 2022 has extended the Federal Solar Tax Credit (ITC), giving homeowners and boat owners even more incentive to go solar. This tax credit applies to your primary or secondary residence—including certain boats with living accommodations (head, galley, and bunk) registered in the U.S.

What You Need to Know

Tax Credit Rate:

  • 2022–2032: 30% of total system costs
  • 2033: 26% of total system costs
  • 2034: 22% of total system costs
  • After Jan. 1, 2035: 0%

Eligibility:
You can claim this credit if you’ve made energy-saving improvements to your home (or qualifying boat) in the U.S. during the tax year. Qualified residences include:

  • Houses
  • Mobile homes
  • Condominiums
  • Cooperative apartments
  • Houseboats (with proper accommodations)

What’s Covered:
The credit applies to the cost of:

  • Solar panels
  • Batteries
  • Inverters
  • Charge controllers
  • Wiring and labor costs

Retroactive Eligibility:
Systems placed in service after January 1, 2006, can qualify if the credit hasn’t already been claimed.

Unused Credits:
If your tax liability is lower than the credit, you can roll over unused amounts to future tax years.

How to Claim the Credit

  1. Complete IRS Form 5695:
    Download the form here. Make sure to use the latest version updated in January/February of the applicable tax year.
    Instructions for Form 5695.
  2. File with IRS Form 1040:
    The total from Form 5695 is entered as a line item on Form 1040. Attach both forms when filing your return.
    Download IRS Form 1040.

Additional State Incentives

Many states offer additional tax incentives or rebates for solar energy systems. Check out the Database of State Incentives for Renewables & Efficiency (DSIRE) for a detailed breakdown of state-specific programs.

State Highlights

  • Arizona: 25% tax credit, up to $1,000.
  • Hawaii: 35% tax credit, up to $5,000.
  • New York: 25% tax credit, up to $5,000.
  • Oregon: Up to $6,000 in credits over four years.
  • South Carolina: 25% tax credit for installation costs.

Note: State programs are subject to change. Always verify details with your state’s tax department.

Don’t Wait—Take Advantage of Solar Savings!

With the credit extended through 2034 and now covering batteries, it’s the perfect time to upgrade or install a solar system. Be sure to consult your tax advisor to maximize your savings and ensure compliance with the latest regulations.

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Our New 4 Quadrant Design

The diagram along side illustrates how these amazing panels work. Instead of the normal 2 quadrant design we use a new split cell design allowing the panel to have four quadrants of solar cells linked in series and isolated with inner panel blocking diodes. If one or two quadrants are shaded, the other quadrants perform at normal output. This can increase shaded panel output by 3 times that of a standard shaded panel.

Shop Our Most Popular

SunPower Maxeon Shade Tolerant Series

Solar panel shading is a major issue on many boats.  Shading can reduce a standard panel performance by over 60%.  Custom Marine Products has developed a series of semi-flexible shade tolerant solar panels that have superior performance when partially shaded by boat equipment or nearby objects.  These solar panels have high performance SunPower Maxeon cells.  The diagram to the left illustrates how these amazing panels work.The junction box is mounted in the center or the edge of the panel enabling the panel to have four quadrants of solar cells linked in series and isolated with diodes.  If one or two quadrants are shaded, the other quadrants perform at normal output.  The result is a panel that will provide up to three times the output of a standard panel when shaded.  These shade tolerant panels are ideal for bimini and dodger mounting where there is boom, mast and instrument pole shading.  Patent pending

What Makes Our Panels Superior

  • Our Semi Flexible Shade Tolerant Panels use only SunPower Maxeon A+ Cells.
  • The SunPower cells we use in these panels are 24.4% efficient.
  • We use an ETFE laminate coating that won't delaminate or go milky for 10 years.
  • The ETFE laminate is applied with a prismatic finish to direct sun energy into the cells.
  • Panels use internal blocking diodes to isolate the quadrants unaffected by shading.
  • We build 6 grommets into the panels edges for easy installation with our mounting kits.
  • All panels come with 3 foot pigtails and MC4 connectors.
  • Our junction boxes are filled with Non Gassing Silicon RTV for maximum electrical waterproof insulation and corrosion resistance.

Premium Marine Solar Panels/Systems and Lithium Iron Batteries

Improve your cruising experience with the highest efficiency solar panels available. 

  • Shipping

    Products ship day after payment domestically. Free shipping on orders over $1000 applies to Lower 48 US states only. International takes longer. We do not add tariff charges. Call for pricing.

  • Custom Designs

    Our engineers will work with you to design a solar system specific to your needs including Lithium Batteries if you like. (Batteries are 10% off w/ solar system purchase).

  • Doug Heath - Santa Fe, NM

    Customer Service and Product

    Very pleased with the performance of the rigid solar panels purchased in 2022. Customer service also has been consistently excellent both before the sale regarding product selection and after the sale regarding installation and maintenance concerns.

  • William Roth - Kodiak, AK

    Heavy Duty Panels For The Win
    Installed 1200watts of panels on my 56' commercial fishing boat in Kodiak Alaska, with salt spray and harsh winters I hardly run my genset. Installation was a breeze with using silicone to mount them. Most the boats in my family fleet have them now and we are all saving big on the fuel bill! Couldn't be happier with the purchace.

  • Hartwell C - Bellingham, WA

    Easy Install - Great Performance

    I worked with Tom last year to design a system for my sailboat; the dialog and information was very detailed and helpful in helping determine my system needs and completing the installation. Once ordering, the kit arrived in a timely manner and very complete. The install was very straightforward and Tom provided additional information as needed. After the install I took off on a 7 month cruise of British Columbia. The system worked perfectly during my trip. I’m very happy with the equipment and support from CMP and Tom. I highly recommend !

Shade Tolerant Flexible Solar Panels Explained