Another factor that impacts your daily electrical needs is where (and what time of year) you plan to do most of your sailing. Here in the Pacific Northwest, we have long summer days (reducing cabin lighting requirements), and mild air and water temperatures (reducing refrigeration requirements). Based on our battery monitor readings, our average daily draw on extended cruises (1-2 weeks) ranges from 40-60 amp hours. That includes extensive use of the refrigerator/freezer both to keep our meat supply frozen, and an ample supply of beer and kids drinks cool.