Solar PV · Glossary
MPPT
Maximum Power Point Tracking — the inverter algorithm that constantly adjusts voltage to extract the most power from a solar string under changing conditions.
MPPT (Maximum Power Point Tracking) is what makes a solar inverter intelligent. The voltage at which a solar string produces maximum power changes constantly with irradiance, temperature and shading. The inverter's MPPT algorithm sweeps the voltage curve every few seconds to find and lock onto that peak.
Most modern inverters have 2 MPPT inputs, allowing you to run two strings on different orientations (e.g., east + west) and have each tracked independently. If shading is severe or you have many small roof faces, optimisers or microinverters push MPPT down to panel level.
When choosing an inverter for a complex Cornwall roof — say a Truro townhouse with a south-east main roof and a small north-west dormer — make sure your installer designs each MPPT input to its proper voltage and current limits. CCS provides a string-design diagram with every quote. See our solar installation page.