Study of various parameters in warm non-equilibrium Microplasma discharge of methane to achieve high selectivity and low energy cost shows that higher energy density systems lead to the most efficient C 2 yields. These systems end up with coke as unwanted byproduct which in turn leads to unstable operation. With the aim of coke minimization and efficient conversion, we are investigating warm non-equilibrium Microplasma discharge conditions (T vib > Ttrans but still T trans ∼ 500-1000K.). Effects of discharge gap , flow configurations on specific energy cost of C2 hydrocarbons is investigated under preliminary studies and trends with varying flow rates, mixture ratios are observed. Adding hydrogen to the input methane feed gas is found to minimize carbon deposition and at above ∼80% of hydrogen there is zero coke formation. While lower flow rates, higher powers and large discharge gaps give the best results in terms of C 2 yields.