- By: Sergey Fedorov
- Solar PV panels
- Updated: Dec 16, 2025
500+ Watt Solar Panels
ClearanceUP TO 50% OFF
By Items
By Pallets
By Truckload
- Overview
- Articles
500 Watt Solar Panels

High-efficiency 500-watt solar panels deliver optimal performance for large homes, farms, cottages, and small businesses seeking substantial electricity cost reductions through robust solar installations. These panels balance power output, space efficiency, and durability for commercial-grade systems in the USA.
500-watt solar panels produce around 2 kWh daily under standard conditions, equating to roughly 730 kWh annually per panel, depending on location and sunlight exposure. Owners of expansive properties value this output for offsetting high energy demands from HVAC systems, irrigation pumps, or production equipment. Business-level assessments confirm these panels minimize levelized cost of energy (LCOE) in ground-mount or flat-roof arrays.
Efficiency in 500W panels reaches 21-23%, with N-type TOPCon cells leading at up to 22.5% by reducing degradation from light-induced and potential-induced factors. Low temperature coefficients around -0.29%/°C ensure stable yields in hot US climates like Florida or Texas. Half-cut or shingled designs further boost shade tolerance and output per square foot.
Actual output varies by irradiance, tilt, and azimuth; a 10kW array of 20 panels might generate 14-18 MWh yearly in sunny states. Bifacial variants capture rear-side reflection, adding 10-30% energy in ground setups common on farms. Panels withstand 5400 Pa snow and 2400 Pa wind loads, suiting hurricane-prone regions.
Top Alternatives to 500W Panels
Stock shortages on exact 500W models highlight strong clearance options in 500-550W ranges from trusted brands. These alternatives match or exceed 500W performance while offering immediate availability for urgent installs. Prioritize monocrystalline cells for superior efficiency in commercial quotes.
ROI hinges on system size, local incentives like the 30% federal ITC, and energy rates averaging $0.15/kWh nationally. A 20-panel farm array saves $2,000-3,000 yearly; payback occurs in 5-8 years with $1.20-1.80/W installed costs. Factor state rebates and net metering for farms in California or Texas to accelerate returns.
For a 2000 sq ft home with 20,000 kWh annual use, 25-30 panels cover 80% offset; scale to 50 for off-grid cottages. Farms require 100kW arrays for pumps and barns, using 200 panels.
500W Panels vs. Competitor Offerings
Competitors emphasize kits but overlook standalone commercial panels; A1 SolarStore prioritizes clearance bifacials for bulk buys. SunGoldPower's 500W PERC hits 21.05% efficiency but lacks pallet-scale options. Rich Solar kits bundle batteries yet ignore custom quotes for businesses.
Select panels with 0/ 10W tolerance and MC4 connectors for seamless scaling; pair with string inverters for 99% uptime in variable shading on barns. Audit roof load capacity early—500W panels weigh 50-60 lbs each.
Why 500W Scales for Businesses?
These panels reduce cabling losses in large arrays, cutting BOS costs by 15%. For small businesses, integrate with microinverters for modular growth. Long-term, N-type tech guarantees <0.4%/year degradation.
💡 Key Takeaway: 500-watt solar panels represent the cutting edge of solar technology, delivering maximum power output for commercial and large residential installations. With advanced N-type TOPCon cells, superior temperature coefficients, and robust construction, these panels provide optimal performance and long-term reliability for serious solar investors.
Ready to Power Your Property with 500W Solar Panels?
Explore our selection of high-efficiency 500-550W solar panels with immediate availability and competitive wholesale pricing for residential, agricultural, and commercial installations.
Buy 500W PanelsBrowse solar panels
- AlabamaShow cities
- ArizonaShow cities
- ArkansasShow cities
- CaliforniaShow cities
- ColoradoShow cities
- ConnecticutShow cities
- DelawareShow cities
- FloridaShow cities
- GeorgiaShow cities
- HawaiiShow cities
- IdahoShow cities
- IllinoisShow cities
- IndianaShow cities
- IowaShow cities
- KansasShow cities
- KentuckyShow cities
- LouisianaShow cities
- MaineShow cities
- MarylandShow cities
- MassachusettsShow cities
- MichiganShow cities
- MinnesotaShow cities
- MississippiShow cities
- MissouriShow cities
- MontanaShow cities
- NebraskaShow cities
- NevadaShow cities
- New HampshireShow cities
- New JerseyShow cities
- New MexicoShow cities
- New YorkShow cities
- North CarolinaShow cities
- North DakotaShow cities
- OhioShow cities
- OklahomaShow cities
- OregonShow cities
- PennsylvaniaShow cities
- Rhode IslandShow cities
- South CarolinaShow cities
- South DakotaShow cities
- TennesseeShow cities
- TexasShow cities
- UtahShow cities
- VermontShow cities
- VirginiaShow cities
- WashingtonShow cities
- West VirginiaShow cities
- WisconsinShow cities
- WyomingShow cities
Stay tuned
Free and usefull digest on solar energy. No spam