PWM vs MPPT Solar Charge Controllers

Choosing between PWM and MPPT controllers is critical for solar system performance.

PWM Controllers

• ✅ Lower cost, simple design
• ✅ Good for small systems under 200W
• ❌ 70-80% efficiency
• ❌ Requires matching panel/battery voltage

MPPT Controllers

• ✅ 95-99% efficiency
• ✅ Works with higher voltage panels
• ✅ 20-30% more energy harvest
• ✅ Better for cold weather
• ❌ Higher initial cost

Recommendation

For small systems: PWM is cost-effective. For larger systems, cold climates, or higher voltage panels: MPPT is the clear winner.

Browse our solar charge controllers or contact us for recommendations.