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.