The principal objective of the paper is to study the techno-economic feasibility of developing the following types of Grid-Scale Solar Photo-Voltaic Energy Storage System (GSPV-ESS) Hybrids having capacity to deliver 350 MWh for one hour to shave the daily peak power demand contributed entirely from the state-owned installed generators of Assam, India:
i. Grid-Scale Solar Photo-Voltaic Lithium-Ion Battery Energy Storage System (GSPV-LiBESS) Hybrid
ii. Grid-Scale Solar Photo-Voltaic Pumped Hydro Energy Storage System (GSPV-PHESS) Hybrid
The amount of solar photovoltaic panels and the capacity of grid-scale energy storage systems required are well established in this paper. Further, the paper discusses the investment costs and the payback period required under the following two scenarios in Assam for Peak Power Shaving (PPS):
i. Scenario I: to shave the peak load, exclusively
ii. Scenario II: to shave the peak load and sell surplus electricity to consumers
The novelty of the paper lies in developing models of two different grid-scale solar photovoltaic energy storage system hybrids of capacity 350 MW each to shave daily peak power demand for one hour and contribute towards Demand Side Management (DSM) for India and abroad. The two models under two scenarios of Assam can be referred to as a template for similar grid-scale solar photovoltaic energy storage system hybrids, developed and erected for daily peak power shaving in other states of India and elsewhere in the world.
Keywords renewable energy resources, solar photovoltaic energy, lithium ion battery energy storage system, pumped hydro energy storage system, demand side management, peak load shaving