280 Watt Rigid Solar Panel - Sunpower A+ Grade 24.4% Efficient Cells
Not Sure How Many Solar Panels You Need?
Try our Power Consumption Worksheet.
Make a copy of the worksheet and update with your information.
Wiring Diagrams
Table: Solar Panel Wattage Range vs. Appropriate Controllers
See All Solar Panel Specifications
Free Shipping
280 Watt Rigid Solar Panel - Sunpower A+ Grade 24.4% Efficient Cells
Experience superior marine solar performance with the 280 Watt Rigid Solar Panel, built with SunPower A+ Grade Maxeon cells—the most efficient solar technology available today. Delivering an impressive 24.4% cell efficiency, this high-output panel is designed for boaters, cruisers, and off-grid users who demand reliable energy in all conditions.
Engineered for maximum performance in shaded and full-sun environments, this panel uses shade-tolerant solar cells and integrated diodes to maintain power output even when sections are partially covered by masts, booms, or rigging. Built with a durable marine-grade frame, it’s ideal for arch, davit, deck, or pole mounting on 12V, 24V, or 48V systems.
Perfect for tight spaces or high-demand applications, the 280W rigid panel delivers maximum watts per square foot, ensuring you get the most power from limited space.
✅ Ships within 1 business day via UPS Ground from Denver or Michigan.
Key Features
⚡ High-Efficiency Power: SunPower A+ Grade Maxeon solar cells with 24.4% conversion efficiency
⚡ Maximum Output in Shade: Shade-tolerant cell design and bypass diodes maintain consistent energy flow
⚡ Built for Harsh Marine Environments: Rigid, corrosion-resistant, and long-lasting construction
⚡ Versatile Installation: Ideal for arch, davit, pole, or deck mounting on boats and off-grid setups
⚡ Compact & Powerful: Maximum wattage per square foot for space-constrained applications
⚡ Great if you are space constrained and need maximum power
Specifications
| Model: | CMP22270S-280 |
|---|---|
| Rated Power: | 280 Watts |
| Peak Power Voltage (Vmpp): | 47.1 Volts |
| Peak Power Amps (Impp): | 6.0 Amps |
| Open Circuit Voltage (Voc): | 55.6 Volts |
| Short Circuit Current (Isc): | 6.3 Amps |
| Cell Conversion Efficiency: | 24.4% |
| Dimensions: | 36.2" x 56.9", 920mm x 1445mm |
| Weight: | 31.3 lbs, 14.2 kgs |
| Background Color: | White |
| Cell Layout: | 7 x 11 |
Solar System Design and Installation
We have put together a collection of helpful information for our customers on everything to help you design you perfect system and installation instructions.
SHOW ME HOW TO PUT TOGETHER MY SYSTEM
CMPower Impact Resistant Walk-on Solar Panel Installation Guide
Detailed Installation Guide to properly mount your solar panel kit on your van roof rack.
READ MORE
Premium Marine Solar Panels/Systems and Lithium Iron Batteries
Improve your cruising experience with the highest efficiency solar panels available.
LEARN MORE
Popular Collections
- Your collection's name
Marine Solar Panels
- Your collection's name
Marine Solar System Kits
- Your collection's name
LiFePO4 (Lithium Iron Phosphate) Marine Batteries
