Enteroendocrine cells of the intestine are the most numerous endocrine cells of the body. In a sense they are known to act as chemoreceptors, initiating digestive actions and detecting harmful substances and initiating protective responses.
The typical manufacturer's warranty on a solar panel is 25 to 30 years, but panels can last up to 40 years with care and attention.
And solar panels now have warranties of 20 to 25 years, and last even longer. So there is a big environmental benefit.. If you are interested in solar because of the environmental benefits, even generating a portion of your power with the sun will improve the environment.