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ISSN 2063-5346
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IRRIGATION ENERGY CONSERVATION THROUGH CENTRALIZED PUMPING USING AN OUTLET MANAGEMENT SYSTEM (OMS)

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Shakshi Singh, Ruchi Pandey
» doi: 10.48047/ecb/2023.12.si7.672

Abstract

Irrigation is vital for agriculture, allowing crop diversification and increased yields. However, traditional irrigation systems consume significant amounts of energy, contributing to India's overall electricity consumption. In 2020-21, agriculture accounted for 17.5% of India's total electricity usage, with irrigation comprising 70-75% of that. The primary reliance on electric pumps for irrigation, along with inefficient practices, further escalates electricity consumption. To address this, the Indian government promotes energy-efficient irrigation systems like micro lift irrigation, such as drip and sprinkler methods, which deliver water directly to crop roots, minimizing evaporation and runoff. Incentives are provided for adopting micro-irrigation projects. Individual farmers' use of distributed pump sets for irrigation livestock results in 91% of water withdrawal in India, with 50% wasted due to conventional methods. This trend drives India towards water scarcity, predicted by 2025. Energy for irrigation pumps is a major cost for farmers, yet many are unaware of potential savings from efficient energy use. The centralized pumping scheme integrates individual pumps into a pump house near reservoirs or dams, reducing energy consumption for each farmer and preserving groundwater for drinking purposes. River water is utilized for irrigation, and centralized pumping irrigation systems effectively distribute water to crops through gravity and outlet management systems. The current practice of installing oversized pumps leads to wasteful spending and energy usage. Moving away from this approach, akin to placing an oversized motor in a car, can result in cost and energy savings, as well as reduced groundwater depletion.

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