The majority of Harvest Hosts locations do not offer hookups, such as electricity or water. For this reason, we require all members to be self-contained. We understand that in hot weather it would be nice to have electricity, and most Hosts are amenable to allowing reasonable use of generators during a visit.
You will notice that some of the Hosts will mention on their page that hook-ups are available. Some provide this complimentary (usually electric) and others have an optional (but not required to use) hook-up available for a small charge.