Energy Estimation for the NOvA Electron Neutrino Appearance Analysis

The NOvA experiment measures long baseline $\nu_{\mu} \rightarrow \nu_{e}$ oscillations in Fermilab's NuMI beam. Measurement of this oscillation probability enables determination of the neutrino mass ordering and opens a window to observation of charge-parity violation in the neutrino sector. NOvA started taking data in 2014 and has already observed $\nu_{e}$ appearance at the 3.3 $\sigma$ level with the first 7$\%$ of the total projected dataset last year. Future analyses will exploit the expected energy dependence of oscillation to improve sensitivity. A new method to estimate energy for $\nu_{e}$ events and its impact on the next analysis will be discussed.