Economics of energy storage peak-shaving projects

Does es capacity enhance peak shaving and frequency regulation capacity?

However, the demand for ES capacity to enhance the peak shaving and frequency regulation capability of power systems with high penetration of RE has not been clarified at present. In this context, this study provides an approach to analyzing the ES demand capacity for peak shaving and frequency regulation.

Why is peak shaving unbalanced?

Due to the cost of deep peaking of conventional units, the system needs a larger charging power provided by ES to participate in peak shaving when the power of RE is larger (e.g. Fig. 7 (Typical day 3 0:00 to 8:00 p.m.)). In this way, the charge and discharge of ES involved in peak shaving may be unbalanced.

Can ESS shave a load peak?

An ESS installed on a commercial customer side is partly employed to shave the load peak and simultaneously provide frequency regulation . The proposed model considers the uncertainty of customer load and regulation signals and linear battery degradation. Results based on real data show that the electricity bill decreases by 12%.

What is peak shaving & load leveling?

Peak shaving and load leveling reflect the basic principle for ESS to provide capacity credits, i.e., offering capacity support when the power system is operating close to the capacity limits of its existing infrastructures. There are three more specific applications associated with the capacity credits provided by ESS.

Why is energy storage important in grid balancing?

Energy storage technology plays an important role in grid balancing, particularly for peak shaving and load shifting, due to the increasing penetration of renewable energy sources such as solar energy and their inherent intermittency and unpredictability.

What is the power and capacity of Es peaking demand?

Taking the 49.5% RE penetration system as an example, the power and capacity of the ES peaking demand at a 90% confidence level are 1358 MW and 4122 MWh, respectively, while the power and capacity of the ES frequency regulation demand are 478 MW and 47 MWh, respectively.