🌞 South Africa’s Best Rand-Per-Watt Solar Panel Deals

High-Watt Modules · VAT Included · Fast Delivery · Full Warranties

Save more on every Watt.
At The Sun Pays, we specialize in 580–630W high-power solar panels that deliver more energy per panel and a lower cost per Watt — the metric that matters most in real savings.

✔ In stock in Gauteng.
✔ Delivery available nationwide.
✔ Bulk pricing for installers.
✔ Free delivery within 100 km of Rayton on qualifying orders.
✔ VAT included — transparent pricing.

🥇 Why Rand-Per-Watt Matters

Most suppliers sell panels by the piece — but pricing should be per Watt because:

• Higher watt panels = fewer panels to install.

• Lower system cost (mounting, cabling, labour).

• Smaller roof area needed.

• Better performance on partially shaded roofs.

Smart buyers compare Rand-per-Watt, not just panel price.

📦 Bulk & Pallet Pricing — Best R/W in SA

🎯 Installer favourite: the 630 W pallet — best watt-density + best price per Watt.

🛒 Individual Panel Retail Pricing

💡 Higher watt = fewer panels = faster installation and lower BOS cost.

🔍 Why Choose High-Watt Panels?

• Latest-generation N-type and 16-busbar cell technology.

• Superior low-light and hot-climate performance.

• Lower racking + wiring needed.

• Ideal for residential pitched roofs & commercial warehouses.

🧑🔧 Installer Benefits

• Guaranteed stock availability — no long lead times.

• Special pricing for repeat installers.

• Convenient pallet handling & secure packaging.

• Quick Pretoria / Gauteng collection or delivery.

• Local support for warranty cases.
  (No chasing overseas suppliers)

🚚 Free delivery within 100 km of Rayton for qualifying pallet orders.

📈 System Design Example (10 kW)

You save on hardware, labour, and time.

Photovoltaic (PV) Panel Technical Specifications

Photovoltaic (PV) panels are the core of any solar power system. Understanding key specifications will help you compare quality, performance, and long-term reliability across different brands and technologies. This guide explains the most important technical terms so you can make an informed solar investment.

🔋 Rated Power Output (Wattage)

This is the maximum electrical power the panel can produce under Standard Test Conditions (STC). Common ratings include 410W, 450W, 550W, and higher.

• STC: 1000W/m² solar irradiance, 25°C cell temperature, and 1.5 air mass.
• Actual output will vary depending on sunlight, orientation, and temperature.

⚡ Voltage & Current

• Open-Circuit Voltage (Voc): Voltage when no load is connected.
• Maximum Power Voltage (Vmp): Voltage at which the panel produces peak power.
• Short-Circuit Current (Isc): Current when the panel is shorted.
• Maximum Power Current (Imp): Current at peak power.

These values determine how panels should be connected in series or parallel to match inverter voltage and current ranges.

☀️ Efficiency

Panel efficiency measures how much sunlight is converted into electricity. Typical ranges:

• Monocrystalline: 19% – 22%
• Polycrystalline: 16% – 18%

Higher efficiency panels generate more power in limited space, ideal for rooftops.

🌡️ Temperature Coefficients

Indicates how panel performance is affected by temperature. Look for:

• Pmax Coefficient: Power output drop per °C rise (~ -0.30%/°C typical for mono panels).
• Voc Coefficient: Voltage loss with heat (affects inverter input range).

Panels with lower temperature coefficients perform better in hot climates.

🛡️ Durability & Certifications

• Frame Material: Anodized aluminum (for corrosion resistance).
• Glass: Tempered, high-transparency glass (typically 3.2mm).
• Protection: IP68-rated junction box, bypass diodes to reduce hot-spot risk.
• Load Ratings: Wind (2400 Pa) and snow (5400 Pa) resistance.
• Certifications: IEC 61215, IEC 61730, ISO 9001/14001/45001

🔧 Dimensions & Weight

Panel size affects handling, roof fit, and mounting requirements:

• Standard 410W panel: ~1722mm × 1134mm × 30mm
• 550W+ panels: Larger formats (commonly 2.2m × 1.1m or similar)
• Weight: Typically 20–30kg depending on wattage and frame design.

🕒 Lifespan & Warranty

• Product Warranty: Typically 10–15 years against manufacturing defects.
• Performance Warranty: 25–30 years; typically guarantees ≥80–84% output at 25 years.

📌 Important Note

Detailed technical datasheets and model-specific specs are available on our Solar Panels collection page. Please refer to each product page for downloadable spec sheets, test data, and compliance documents.

📞 Need Help Choosing Panels?

Contact our technical team at technical@thesunpays.co.za or call 012 734 0915 for expert advice on sizing, inverter matching, and installation best practices.

👍 Ready to Order?

📞 012 734 0915 (Main line)
📍 Rayton, Gauteng
📩 admin@thesunpays.co.za
🛍 Shop online: https://shop.thesunpays.co.za/collections/solar-panels

Get installer pricing today — your margins just got better.