（1） The advantages of solar powered home yard lights

1. Green environmental protection, high safety factor, low operating power, no safety hazards, and can also be recycled, with minimal environmental pollution.

2. The light emitted by solar courtyard lights is soft and not harsh, without any light pollution, and does not produce any other radiation.

3. Solar powered courtyard lights have a long service life, with semiconductor chips emitting light and a cumulative lifespan of tens of thousands of hours, often higher than ordinary courtyard lights.

4. High efficiency in use, effectively converting solar energy into light energy. Compared to ordinary lamps, the efficiency of converting thermal energy into light energy is several times higher.

（2） The Disadvantages of Solar Home Courtyard Lights

1. Instability

In order to make solar energy a continuous and stable energy source, ultimately becoming an alternative energy source that can compete with conventional energy, it is necessary to solve the energy storage problem, which is to store solar radiation energy during clear days as much as possible for use at night or on rainy days. However, energy storage is also one of the weak links in the utilization of solar energy.

2. Low efficiency and high cost

Due to low efficiency, high cost, and generally unable to compete with conventional energy in terms of economy. In the foreseeable future, the further development of solar energy utilization will be mainly constrained by economic factors.