Solar Inverter Replacement Cardiff — All Brands

Your solar inverter is the brain of your solar system — it converts the DC electricity generated by your panels into the AC electricity your home uses, manages export to the grid, and provides the monitoring data you use to track your generation. When an inverter fails, goes into fault mode or starts underperforming, your entire solar system stops generating, costing you money every single day it is not working.

GL Solar provides fast inverter diagnosis and replacement services across Cardiff and South Wales. We work with all major inverter brands — SolarEdge, SMA, Fronius, Growatt, Solax, Solis, Ginlong, Huawei, GivEnergy, Deye and more. Our experienced engineers can often diagnose the fault remotely from your monitoring data before we even visit, saving time and reducing the period your system is offline. For many of Cardiff's most common inverter brands, we hold replacement stock locally, enabling same-week or even same-day replacement.

If your inverter is showing error codes, has stopped generating, is displaying a fault light, or is simply getting old (most inverters last 10–15 years — many Cardiff systems installed during the original FIT scheme in 2011–2015 are now at end of life), contact our Cardiff team for a fast diagnosis and competitive replacement quote. We'll tell you honestly whether repair is possible, whether replacement is necessary, and what the best-value option is for your specific system.

Inverter replacement is also a great opportunity to upgrade to a modern hybrid inverter that adds battery storage capability to your existing solar system. Many Cardiff homeowners use their inverter replacement as a trigger to add a GivEnergy or Tesla Powerwall battery — converting a pure solar system into a full solar-plus-storage system in a single visit. We cover all Cardiff postcodes including CF14 (Whitchurch, Rhiwbina), CF5 (Canton, Fairwater), CF23 (Pontprennau, Cyncoed), CF24 (Roath, Cathays) and the wider South Wales region.