Small footprint?  Any idea how many square feet of solar would be requires to maintain a cookstove?  ... at night? ... during bad weather winter?  A stove needs to be reliable year-round.  So you would need panels and some sort of storage medium (batteries).  There are no small footprints.<p>From an environmental angle, burning wood to cook food might sound bad, but trees can grow back.  So it is still a step up from burning coal&#x2F;oil&#x2F;LNG (either directly or via electricity).