How long do solar panels last? However, while that’s usually the case with a central inverter (which handles the output of all the panels), a newer type, the so-called ‘micro-inverters’, are installed or included with each solar panel, and are said to have a much longer lifespan (up to 25 years), and could last for decades as well. Global Solar Supply is a premier , US based, provider of solar panels, solar batteries, solar inverters and any other accessories needed for solar power systems. Solar system Engineering, Consulting, Advice Renewable energy is the future.We are also a certified C-10 electrical …