Pyongyang Power Station Energy Storage Profit Model

Is energy storage a profitable business model?

Although academic analysis finds that business models for energy storage are largely unprofitable, annual deployment of storage capacity is globally on the rise (IEA, 2020). One reason may be generous subsidy support and non-financial drivers like a first-mover advantage (Wood Mackenzie, 2019).

How do energy storage devices affect power balance and grid reliability?

It is crucial to integrate energy storage devices within wind power and photovoltaic (PV) stations to effectively manage the impact of large-scale renewable energy generation on power balance and grid reliability. However, existing studies have not modelled the complex coupling between different types of power sources within a station.

How is the equivalent profit of energy storage calculated?

In this model, the equivalent profit of energy storage in the configuration stage is calculated based on the expected profit in the operation stage. Meanwhile, the expected profit in the operation stage also depends on the optimization of energy storage capacity configuration in the configuration stage.

Is energy storage a'renewable integration' or 'generation firming'?

The literature on energy storage frequently includes “renewable integration” or “generation firming” as applications for storage (Eyer and Corey, 2010; Zafirakis et al., 2013; Pellow et al., 2020).

What is a power storage facility?

In the first three applications (i.e., provide frequency containment, short-/long-term frequency restoration, and voltage control), a storage facility would provide either power supply or power demand for certain periods of time to support the stable operation of the power grid.

Are large-scale wind and PV power stations a viable solution to the energy crisis?

Large-scale construction of wind and PV power has become a key strategy for dealing with the energy crisis. However, the variability and uncertainty of large-scale renewable energy power stations pose a series of severe challenges to the power system, such as insufficient peak-shaving capacity and high curtailment rates.