Energy-efficient, sustainable farming practices in South Asia's Eastern Gangetic Plains can help small farmers and the environment. By using conservation agriculture methods, farmers can reduce energy and greenhouse gas emissions while increasing efficiency. Trials on rice-wheat, rice-maize, and rice-lentil systems showed that improved practices cut energy use by around 10% and made energy use more efficient. These changes also led to higher crop yields and income. Overall, these findings show that sustainable farming can help farmers produce more food in a more environmentally friendly way, even in the face of climate change.