"take up an initiative " Translation: Apply for free money, supplied by increasing the neighbours bills.
Don't forget the ongoing and end-of-life costs harry. The inverter won't last 25 years and you are juicy sitting target for the replacement industry (and the original manufacturer and installer will be history). Then there is the possibility that with all that cadmium and other nasty stuff the old panels will need to be disposed of by a licensed contractor, just like asbestos.
Meanwhile, if you had invested the money you spent on those panels in something like Fundsmith back in 2011 your investment would be worth 2.5 times now what you started with, plus a stream of dividends. How much will your panels be 'worth' in 25 years time ?.