Solar Inverter Replacement: When Your FiT System Needs an Upgrade

String inverters have a design life of 10-12 years. Systems installed in the 2010-2015 Feed-in-Tariff boom are now reaching replacement age, and many are already failing. ## Signs your inverter is failing - Error codes (check the display or app) - Output dropping 15-20% below baseline - Unexplained shutdowns during the day - Fans running constantly or making noise ## Replace vs repair Modern hybrid inverters (GivEnergy, SolaX, Solis) cost £800-£1,600 installed and are battery-ready — a significant upgrade over 2012 SMA or Enphase units. Repair only makes sense if the inverter is under 5 years old and the fault is minor. ## FiT payments Replacing the inverter doesn't affect FiT payments as long as system capacity is unchanged. We handle the MCS paperwork to maintain your FiT. See our [inverter replacement service](/inverter-replacement). Coverage includes [Manchester](/locations/manchester), [Salford](/locations/salford), [Leeds](/locations/leeds), and nationwide.