Ever-dropping prices for solar panels are slowly making it economically feasible where it used to be a bad idea. According to https://uk.renogy.com/blog/what-i

Ever-dropping prices for solar panels are slowly making it economically feasible where it used to be a bad idea. According to https://uk.renogy.com/blog/what-is-the-average-payback-period-for-solar-panels-in-the-uk/ https://uk.renogy.com/blog/what-is-the-average-payback-perio... the payback time is now around 12-18 years, which is worse than here in Germany (I did a calculation for a small 600W installation in my area, and it came back with 8 years), but still better than the expected life time (20-25 years). This data is from 2021, maybe rising energy prices will lower the amortization time. In general, smaller installations have lower amortization times, because the higher percentage of power produced that you consume yourself (and you pay more for a kWh than you get for selling one).