Modern off-grid solar systems are built to last, with solar panels often covered by a 25-year warranty. The overall system typically comes with a 10-year warranty and can easily have a lifespan of at least 15 years, thanks to the durability of major components like batteries. In fact, many systems can last up to 20 years with minimal maintenance required.

Maintenance for modern off-grid solar systems is virtually non-existent. The main requirement is keeping the panels clean and ensuring all cables are intact and not damaged by wildlife like possums. One aspect to consider in modern systems is software updates, which can help optimize performance and efficiency over time.