Energy storage is becoming ever more important as the share of variable sources of energy like solar and wind power increases.
This and other studies have found that costs begin to rise exponentially once the share of variable renewables crosses roughly the 80percentthresholdld.
First, we review model-based analyses that explore the role of power storage in energy systems with high shares of variable renewables.
However, the Chinese power sector has not undergone the necessary reforms to facilitate the integration and absorption of a larger share of variable renewable energy.
In the presence of a large share of variable renewable energy sources, the reserve design should be adjusted or replaced by an alternative capacity mechanism.
Introducing a strong decarbonisation constraint, for instance, profoundly modifies the power sector, which is impacted by increasing shares of variable renewable energy sources.
Short term electricity trading to balance generation and demand provides an economic opportunity to integrate larger shares of variable renewable energy sources in the power grid.
Actually, one of the different points that we have shown in this paper is that, at some point, you might be increasing the share of variable renewables, but you might not be reducing emissions as you like to.
Integrating large shares of variable renewable energy sources, in particular wind and solar, can lead to a strong increase of flexibility requirements for the complementary system, traditionally hydrothermal, which has to balance the fluctuations of variable generation.
The increasing share of variable renewables in European power systems create a downward adequacy problem, which deals with the ability of power systems to cope with periods of excess generation.
