I got caught in the rain last year after a hurricane knocked out power for a day or so. I had one of these from my sons wagon and it worked pretty well, just mounted it low so it was mostly covering the top of the gen. https://www.amazon.com/Sport-Brella-Versa-Brella-Swiveling-Umbrella-Firebrick/dp/B00HA2ZKFQ/ref=asc_df_B00HA2ZKFQ/?tag=hyprod-20&linkCode=df0&hvadid=218102392301&hvpos=&hvnetw=g&hvrand=17947807248352622431&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9003571&hvtargid=pla-356488992899&th=1