Power systems should be reliable and flexible to balance the supply and demand of their end-users for 24 hours a day and 7 days a week. Hopefully, renewable energy share has risen up into the energy mix of countries. In 2018, renewable energy sources, including solar, wind, and hydropower, have produced close to 26% of the generated electricity in the world. Although they help power systems to be more flexible in order to meet their user’s demand, their accountability, due to their intermittent production, is challenging for power systems. In other words, the electricity generation of renewables puts power systems under pressure because of their extremely weather-dependent.
As the dominant solution to this challenge, researchers and engineers have put forward the storage solution.
Battery storage is the usual storage solution that comes to our minds quickly. But we aim to go one step further to suggest a greener storage solution. That is Seasonal Storage. With the help of hydropower, another renewable energy, and thanks to Mother Earth, it can be proposed a better storage solution to mitigate the variant nature of renewable generation.
For example, solar power generation goes up in spring and especially in the summertime. By installing ground-mounted solar power plants close to dams and dikes, the extra electricity production of solar plants can be stored for other times of the year when its production can not meet the power system’s requirements, such as wintertime. At the time, we can confidently rely on the stored water behind the dam or dike.
It is important to note that it is a seasonal option for storage and depends on the location of the installation.
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