Because the industry is relatively young and products used today haven't been around for ages, there's not a 100% perfect answer to this.
However, testing shows that after about 20 years there is a small reduction in the solar power generated - mainly because the glass becomes slightly duller and refracts more light (kind of like how more humidity in the air can reduce solar power generation).
The inverters won't last as long as the solar panels themselves, and you'll find they will perform for 10 to 15 years.
25 years is a standard warranty period for most solar panel installers, but if you're interested in the costs, warranties and specific benefits of installing solar power in your home, post a job today. You'll be contacted by up to 3 quality, professional businesses that can give you all the information you need to make a decision.
Your site is very informative and full of knowledge about solar panels.
over a year ago by Cheapest Solar Panels