Exploiting the temperature difference between the lunar materials deep underneath the station and the surface might be a suitable power source for all manner of heating, cooling, and power generating devices.<br /><br />Modify heat pump technology (you know, the gadget that cools in summer and heats in winter) to work in lunar conditions.<br /><br /><br /> <div class="Discussion_UserSignature"> <p><font color="#ff0000"><strong>TPTB went to Dallas and all I got was Plucked !!</strong></font></p><p><font color="#339966"><strong>So many people, so few recipes !!</strong></font></p><p><font color="#0000ff"><strong>Let's clean up this stinkhole !!</strong></font> </p> </div>