Vegetables are rich source of vitamins, carbohydrates, salts and proteins. Increased health awareness, a high population growth rate, changing dietary patterns of an increasingly affluent middle class, and the availability of packaged vegetables have resulted in a year-round high demand for vegetables in the country. In the absence of storage infrastructure and a vegetable processing industry in the country, off-season vegetable farming is the only viable option for adding value to farmers' produce. Vegetables can be grown in the offseason using tunnel farming technology, which has been shown to help farmers extend the growing season, increase yield, and improve crop quality. Tunnels protect plants by shielding them from harsh weather, buffering low temperatures, and reducing certain diseases and pests. This article will discuss all tunnel farming-based advancements for off-season vegetable cultivation to maximise production and profit.