Over here, the majority of homes have solar water-heaters.
I installed mine 5 years ago, one year after I bought this apartment. Cost 850€ (with the installation) for a 120 lt tank with a 2m² panel.
I noticed a drop of ~25-30€ on my electricity bill. (The bill is bi-monthly). So it is about to have paid for itself sometime within his year. The warranty is for 10 years, but the main advantage other than the economy is the zero waiting time to have hot water (with the previous electric, I had to turn it on and wait ~15-20 mins). Also, I have never run out of hot water or needed to switch on the power to heat the water on overcast days.
Now I am thinking to get a bigger tank and panels and connect it to the heating. The radiators already work with hot water, but it comes from the building's central gas-boiler (small apartment building with 4 apartments).
I installed mine 5 years ago, one year after I bought this apartment. Cost 850€ (with the installation) for a 120 lt tank with a 2m² panel.
I noticed a drop of ~25-30€ on my electricity bill. (The bill is bi-monthly). So it is about to have paid for itself sometime within his year. The warranty is for 10 years, but the main advantage other than the economy is the zero waiting time to have hot water (with the previous electric, I had to turn it on and wait ~15-20 mins). Also, I have never run out of hot water or needed to switch on the power to heat the water on overcast days.
Now I am thinking to get a bigger tank and panels and connect it to the heating. The radiators already work with hot water, but it comes from the building's central gas-boiler (small apartment building with 4 apartments).