670W Solar Panels for Large Projects

Last updated: January 28, 2026

High output panels typically used for large systems where panel count and power density matter most.

Quick answer: 670W panels are generally for commercial or ground-mounted systems rather than most homes. 670W panels are typically used in large commercial or utility-scale installations. They provide high output per panel and are best for projects with ample space and professional design.

Best Fit

670W panels are best for:

Commercial rooftop systems
Ground-mounted solar farms
Large off-grid systems with high demand

Planning Notes

Plan carefully for:

Panel size and handling logistics
String sizing and voltage limits
Mounting structure strength

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Price Disclaimer: Prices shown were verified on 29 January 2026. Prices may change without notice. We earn affiliate commissions on qualifying purchases.

All prices are in South African Rand (ZAR) unless otherwise stated. Shipping costs may apply depending on your location.

600W Panels Panel Prices Off-Grid Systems

670W Solar Panels FAQs

Usually not. They are physically larger and better suited to commercial or ground-mounted systems. Most homes use 450-550W panels.

For a typical South African home: Essentials only (5kW system): 8-10 panels. Average home (8kW system): 14-16 panels. Large home (10kW+ system): 18-22 panels. Calculate based on your monthly electricity usage and roof space.

Quality solar panels last 25-30 years with minimal degradation (0.5-0.8% per year). After 25 years, they still produce 80-85% of original capacity. Tier-1 brands like JA Solar and Canadian Solar offer 25-year performance warranties.

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