VocMax: Solar PV Calculator

Ensure your solar PV string designs are safe and efficient with VocMax, the comprehensive calculator for voltage and temperature coefficient matching. VocMax helps solar professionals verify that photovoltaic strings will not exceed inverter maximum voltage limits in freezing conditions, nor drop below the MPPT operating window during extreme heat. What VocMax does: • Cold-Weather Voc Check: Calculates the maximum possible voltage your string will produce based on minimum ambient temperature and your module's temperature coefficient. • Hot-Weather Vmp Check: Ensures the string voltage remains high enough to keep the inverter operating efficiently during peak summer heat. • Visual String Sizing: Easily experiment with different series and parallel configurations using the interactive designer. • Compliance Verification: Get instant feedback on whether your design passes or fails safety thresholds. • Project Management: Save your designs locally for quick reference later. • Educational Resources: Includes a handy reference section detailing the formulas used for voltage limits and NEC current sizing. Built for installers and designers, VocMax provides the critical math needed to protect inverters and maximize solar yield, all in one easy-to-use application.