Why are rechargeable cells connected to solar cells?

The rationale for connecting rechargeable cells to solar cells is primarily centered around the need to store energy for use during times when solar power generation is not possible, such as at night or on cloudy days. Solar cells generate electricity from sunlight; however, this generation is intermittent, depending primarily on the availability of sunlight.

During the day, solar cells can produce more electricity than is needed for immediate consumption. Rechargeable batteries serve to capture this surplus energy and store it for later use when the solar cells are not producing power. This mechanism ensures a consistent and reliable energy supply, allowing households or systems powered by solar energy to function continually, irrespective of solar exposure.

While the potential for excess energy production exists and the efficiency of solar cells can be an important factor, the primary purpose of integrating rechargeable cells into solar systems is to ensure energy availability during periods without sunlight. This effective storage solution maximizes the utility of solar energy and enhances the overall efficiency of the solar energy system.