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The projection of electricity demand plays a crucial role in anticipating population growth and economic development. Kabupaten Banyumas, as an administratively evolving entity, requires accurate energy projections to meet its electricity needs. This research aims to project the electricity demand in Kabupaten Banyumas and evaluate the electricity supply from the Ketenger Hydroelectric Power Plant (PLTA) using the Low Emission Analysis Platform (LEAP) software. The research method involves analyzing historical data on electricity consumption, population growth, and economic growth in Kabupaten Banyumas. Subsequently, the LEAP model is utilized to simulate projections of electricity demand in the future, considering various development scenarios. The electricity planning calculations are based on the growth pattern of electricity usage similar to the base year, taking into account customer factors, economic growth, and energy elasticity in Kabupaten Banyumas. Electricity planning is conducted by simulating the LEAP software using the Business as Usual (BAU) scenario and manual calculations using the List of Electricity Needs (DKL) 3.2 scenario. The research results indicate that in 2032, the demand for energy with the DKL 3.2 method is 2,055,300,522 kWh, and the demand for energy with the BAU method is 1,752,317,090 kWh, out of a total available of 130,760,653 kWh. This signifies that over a period of 10 years, Kabupaten Banyumas experienced an increase in electricity demand by 97.1% for the DKL 3.2 method and 68.03% for the BAU method, while the production of the Ketenger Hydroelectric Power Plant also increased by 141%. From these results, the Ketenger Hydroelectric Power Plant can only meet 7.46% of electricity demand for the BAU scenario and 6.36% for the DKL 3.2 scenario. This research provides practical contributions to local-level energy planning, enabling informed and sustainable decision-making in the face of the growing demand for electricity in Kabupaten Banyumas.