Evapotranspiration is a vital component of the hydrologic cycle associated with multiple water and energy fluxes in complex ways. Changing climate has altered the hydrologic cycle leading to changes in the spatio-temporal pattern of evapotranspiration that may impact on water availability across the globe in future. Understanding the factors (water and energy fluxes) that contribute to such changes is vital to assess future water availability. This study identifies the direct and indirect coupling of evapotranspiration with different energy fluxes over the Indian Subcontinent for a period of 30 years considering four seasons (JFM, AMJ, JAS, and OND). To achieve this, we use the evaporative stress index, defined as one minus the ratio of actual to potential evapotranspiration, to identify the regions with energy- and water-limited evapotranspiration. Furthermore, networks or conditional independence structures are used to identify the energy fluxes (e.g., net radiation) that directly influence evapotranspiration. Results indicate significant differences in the direct and indirect coupling of evapotranspiration with the energy fluxes based on the region and season of analysis. Given the uncertainty associated with the future projections of evapotranspiration, identifying energy fluxes primarily associated with evapotranspiration and future alterations in such energy fluxes will provide a better insight into the future water availability.