Hello harbor freight has a sale on them to 2/13/12.the prices are different from there web page to instore like this one is $129 on sale on there web page instore is $89.99 http://www.harborfreight.com/engine...s-900-max-watts-portable-generator-66619.html. i think that one should run up to a 100 gallon or so without mh lights hth don