Solar street lights can work for 2 to 7 rainy days depending on battery size and panel quality. Quality monocrystalline solar panels capture more sunlight even on cloudy days.
According to the City office, over 1,000 solar street lights installed in the metropolis have already been replaced with 'smart' electric street lights and an equal number of remaining solar street lights will be replaced within the next two months.
A well-designed solar street light typically lasts 10–20 years 1 as a system. Expect panels 25–30 years 2, LEDs 50,000–100,000 hours (L70), controllers 5–10 years, and LiFePO4 batteries 8–12 years 3 depending on depth of discharge, temperature 4, and sizing margins.
Some roads across Barbados will soon be better lit following a donation of 180 solar lamps from the Hunan Province of the People's Republic of China to the Ministry of Transport and Works (MTW).