This manuscript presents experimental investigations on various newly developed efficient solar concentrating technologies for harnessing solar energy in a smart way. Enhanced performance of the collectors will help increasing the steam-producing ability of the system. The produced steam can be used for so many agricultural as well as industrial applications like paddy (rice husk) parboiling, cooling for people (rural community), oil extraction through processing of lemon grass, production of jaggery, sanitization of infected clothes/hospital items, bleaching use in textile industry, washing of household utensils (dish washer), dairy industries, synthesis of alumina using Boehmite, textile, power production, and for many other usages, steam is required. Cavity type of receivers plays important role in exchanging of concentrated solar energy to thermal heat. Modified designs of cavity receivers along with efficiency enhancement techniques have been presented in the paper. These modified designs comprising, conical fin type of cavity receiver, multistage receiver and conical receiver, have exhibited efficiency boost of about 19.5%, 8.6%, and 6%, respectively. The efficiency of these modified designs has been compared with that of smooth conventional receivers.