Our 300W–370W solar panels offer an ideal combination of high power output, compact size, and wide system compatibility. This category includes some of the most popular wattages in the U.S. market — 300W, 350W, and 370W — providing excellent performance for RVs, van conversions, off-grid cabins, mobile power, and small residential installations where roof space and weight are limited.
Whether you’re upgrading an existing array or building a portable off-grid system, a 300W solar panel provides dependable daily production, efficient use of limited roof space, and easier handling compared to larger residential modules.
A high-quality 300–370W panel typically generates:
1.2–1.6 kWh/day in high-sun states (AZ, TX, NM, NV)
0.9–1.2 kWh/day in moderate-sun regions (CO, NC, TN, OR)
This wattage delivers meaningful daily energy while keeping your array compact and easy to mount.
A 300W solar panel offers strong wattage per square foot, making it ideal for:
RVs and motorhomes
Van builds
Boats and marine setups
Off-grid cabins and sheds
Small residential roofs
Fewer panels are needed to reach your target wattage, reducing mounting points and installation time.
300W–370W panels integrate seamlessly with:
12V, 24V, and 48V systems (MPPT recommended)
Off-grid power stations
Hybrid backup systems
DIY solar kits
RV, marine, and cabin solar setups
Upgrades from older 100–200W systems
They provide a strong balance between portability and output, fitting both mobile and stationary applications.
Depending on your setup, a single panel can support:
A 12V RV refrigerator (8–12 hours)
LED lighting, fans, and small appliances
Laptops, devices, and tool charging
Water pumps, routers, modems
Daily battery maintenance for cabins or sheds
This makes 300W modules especially practical for off-grid and hybrid use.
Most panels in this category include:
High-efficiency monocrystalline cells
PERC or half-cut cell design
Anodized aluminum frames
Low-iron tempered glass
Weather-sealed junction boxes
MC4 connectors
UL 1703 / UL 61730 certification
These features ensure long-term reliability in desert heat, coastal environments, snow loads, and continuous UV exposure.
Our 300W solar panel collection delivers dependable, high-efficiency performance for RV living, van conversions, off-grid cabins, and compact home PV systems. If you need help selecting the correct wattage or building a complete system, our team can provide load calculations, wiring guidance, and component matching tailored to your setup.
Explore our 300W–370W solar panels today and equip your project with clean, reliable, U.S.-proven energy performance.
