Optimized demand side management (DSM) of peak electricity demand by coupling low temperature thermal energy storage (TES) and solar PV

Abstract

Cooling in the industry sector contributes significantly to the peak demand placed on an electrical utility grid. New electricity tariff structures include high charges for electricity consumption in peak hours which leads to elevated annual electricity costs for high-demanding consumers. Demand side management (DSM) is a promising solution to increase the energy efficiency among customers by reducing their electricity peak demand and consumption. In recent years, researchers have shown an increased interest in utilizing DSM techniques with thermal energy storage (TES) and solar PV technologies for peak demand reduction in industrial and commercial sectors. The main objective of the present study is to address the potential for applying optimization-based time-of-use DSM in the industry sector by using cold thermal energy storage and off-grid solar PV to decrease and shift peak electricity demands and to reduce the annual electricity consumption costs. The results show that when cold thermal energy storage and solar PV are coupled together higher annual electricity cost savings can be achieved compared to using these two technologies independently. Additionally, considerable reductions can be seen in electricity power demands in different tariff periods by coupling thermal energy storage with off-grid solar PV.

Evaluation of electricity storage versus thermal storage as part of two different energy planning approaches for the islands Samsø and Orkney

“…Alternatively, if TES for DH is not a feasible technology due to limited heat demands, TES can also be filled with a cold substance for district cooling. This is previously analysed in combination with PV potentials and electrical chillers for industrial cooling demand [28], but could be relevant also for residential cooling demands, for example on islands with warmer climates and as an alternative to airconditioners.…”

Energy-saving behaviour as a demand-side management strategy in the developing world: the case of Bangladesh

“…Peak electricity demands are usually met by fossil fuel generations such as oil and gas; hence, peak demand hours are more carbon intensive than off-peak hours [2]. This indicates the need to reduce electricity demand, in particular peak demand, which has caught the attention of many recent studies [3][4][5][6][7][8].…”

On the integration of the energy storage in smart grids: Technologies and applications

“…Energy storage is a critical component for smart grids . The significance of EES in energy networks is analyzed in Reference.…”

“…6,7 Energy storage is a critical component for smart grids. [8][9][10] The significance of EES in energy networks is analyzed in Reference. 11 Optimal sizing and operation of storage systems provides peak power demand effective management, allows the maximization of renewables' penetration, supports power quality and reduces energy networks' expansion needs.…”