id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-14423		cet-14423		6	.pdf	application/pdf	3841	189	52	Review of hybrid renewable energy systems with comparative analysis of off-grid hybrid system. Energy storage systems are an integral part of hybrid renewable energy systems, and hydrogen storage is one of the newest storage systems.	cache/cet-14423.pdf	txt/cet-14423.txt