Low current intensity stationary discharges at atmospheric pressure were investigated in GREMI laboratory for different applications such as bio-syngas production (from biomass) or hydrocarbon and alcohol steam reforming. Main stationary discharge interest is a stable reactive plasma volume allowing reproducible experimental results and easy implementation of electrical and chemical diagnostics. Stationary electrical discharge for CH4 partial oxidation or CH4 steam reforming was recently investigated and experimental results were discussed. The CH4-air and/or water treatment by such a non-thermal plasma leads to syngas production with various H2, CO, CO2 and C2-hydrocarbon mole fractions. The laboratory scale plasma reactor performance is presented in terms of efficiency expressed by using mass flow rates and low heating values of the species. A specific discussion is developed to conclude about applications of such a technique.