1) The document discusses a smart agricultural system that uses solar energy to power water pumps for irrigation. It uses solar panels, sensors, and a battery to power water pumps without the need for electricity. 2) The system uses an automatic solar tracker and sensors like light dependent resistors and moisture sensors to optimize the efficiency of the solar panels and control irrigation based on environmental conditions. 3) The solar energy is converted to electrical energy via photovoltaic cells and stored in a battery. This stored energy then powers water pumps for irrigation purposes in rural areas lacking electricity. The system provides a more economical and environmentally friendly alternative to diesel-powered pumps.