How Long Do Different Parts of Solar Power Systems Last?

Solar power systems are built for the long haul, designed to continue providing solar energy for more than 2 decades. But what about all the individual components? Will you need to replace some of them between now and the time that you need to overhaul the entire system? Knowing how often the different parts of your system need to be replaced can help you plan for maintenance costs and ensure that your system keeps running efficiently throughout its life. Keep reading to learn the average lifespan of each piece of a solar power system.

Solar Panels: 25 to 30 Years

Solar panels are the longest-lasting part of your solar power system. Most modern panels can last between 25 and 30 years, and have a good chance of continuing to produce energy beyond that time period, though admittedly, with reduced efficiency. After about 25 years, most panels will operate at around 80% of their original capacity, so you can still get a decent amount of power from them beyond their recommended “expiration” date. Of course, environmental factors like very high heat, humidity, and weather damage can impact that longevity, but overall, your panels will last for close to 30 years with minimal maintenance requirements.

Inverters: 10 to 15 Years

The inverter is another central part of your system, converting the DC power your panels make into the AC power that your home relies on for most electronics and lights. Because inverters handle large electrical loads and generate heat in doing so, they have a shorter lifespan than panels. You can expect an inverter to last between 10 and 15 years. String inverters and central inverters tend to be on the shorter end of this span, while microinverters (which are installed on individual panels) can last for 20 years or more. Proactive maintenance and ensuring sufficient airflow around the inverter can help extend its lifespan.

In addition to understanding the lifespan of solar power system components, it’s important to consider the expertise of local providers. For residents in Grass Valley, North Valley Solar Power offers valuable insights and services tailored to the region’s specific needs. Their knowledge of local conditions can help optimize the performance and longevity of your solar system. By choosing a provider familiar with the area, you can ensure that your solar panels, inverters, and other components are installed and maintained to maximize their lifespan, providing reliable energy for years to come.

Batteries: 5 to 15 years

The lifespan of your solar batteries can vary widely depending on the type of battery chemistry you choose. Lead-acid batteries last around 5 to 7 years, while lithium-ion batteries (now the most popular choice for residential systems) last 10 to 15 years with the right care. Ensuring the batteries are used consistently, kept at the right temperature, and don’t exceed the recommended depth of discharge can all help to improve their longevity, while ensuring they’re kept in a cool, dry location helps them maintain their storage capacity.

Wiring and Electrical Components: 25 Years or More

Overall, the wiring and other electrical components of your system are designed to last just as long as your panels—typically 25 years or more. However, some environmental factors like rodent damage or poor installation can reduce that lifespan.

If you’re installing Phono Solar energy panels, you can expect your system to last for decades, while only replacing your batteries and inverter once during the panels’ lifetime.