If a solar system had a heart it would be the Inverter. The Inverter is what changes the DC electrical current to AC electrical current, making it possible for solar panels to provide your home with free energy. Most Inverters have a life expectancy of 10-12 years before replacement is needed, many environmental factors may shorten that time. High temperatures, humidity, dirt, and dust can be the culprit for this problem. Scheduling a simple maintenance or tune-up (see Maintenance for more information on Tune-Ups) could help prevent your Inverters lifespan from shortening and can fix an issue that could be leaving half your solar array inoperable which save’s you money and generates more solar energy.