after around 5-7 years you break even, and solar panels can last for 2-4 decades. Most panels you can buy in germany have a warranty of around 25 years. So yeah

after around 5-7 years you break even, and solar panels can last for 2-4 decades. Most panels you can buy in germany have a warranty of around 25 years. So yeah, you buy them to save money since electricity is hugely expensive in germany.