Venus is a planet of great scientific interest. It is our closest neighbor and the most similar to Earth in size and location in the solar system. However, at around 500^oC, Venus also has one of the most hostile surfaces in the solar system. Venus’ high temperature environment in combination with its CO₂ rich atmosphere presents an attractive opportunity for using Lithium-CO₂ reactions as a power source having exceptionally high specific energy. In this study we analyze an approach for achieving an electrical energy capacity of 7.6kWh/kg using a high temperature, Lithium/CO2 primary electrochemical cell with a solid state ceramic electrolyte.