Solar power generation and night energy storage

In this context, the ability to store and release solar energy when the sun is not present becomes essential to fully exploit this clean energy source. One of the most promising approaches to storing solar energy for use at night is thermal storage technology.

The idea of “nighttime solar power” may seem counterintuitive at first glance. After all, solar energy comes from the Sun, a source of light and heat that is only available during the day.

This technology has already been implemented in several solar plants around the world, such as the Gemasolar solar plant in Spain, which has managed to generate electricity continuously for 24 hours thanks to its thermal storage system. While thermal storage is an effective option, it is not the only way to make solar energy available at night.

One of the key challenges for nighttime solar power is how to efficiently integrate it with current electricity grids. In many countries, power grid infrastructure is designed to handle conventional, centralized energy sources, such as gas, coal, or nuclear power plants.

Our paper provides the first tractable methodological approach in the operations literature to study large-scale storage capacity investment that is used to shift intermittent solar electricity across time, especially between night and day, for off-grid applications. Our results yield several practical takeaways.

After all, solar energy comes from the Sun, a source of light and heat that is only available during the day. However, technological and scientific advances are changing that perception, opening up possibilities for storing and using solar energy even after the sun has set.