Nodal Analysis is a systematic method used in electrical engineering to analyze circuits. It focuses on determining the voltage at each node in a circuit, which is a point where two or more components connect. By applying Kirchhoff's Current Law (KCL), the sum of currents entering and leaving a node is set to zero, allowing for the calculation of unknown voltages. This technique simplifies complex circuits by reducing the number of equations needed to solve for unknowns. It is particularly useful for circuits with multiple components, such as resistors and capacitors, making it easier to understand the overall behavior of the circuit.