This may not apply to OP, but others should always consider these seldom noted aspects, any high water will kill a Genset, most enclosures are not rated for high hurricane winds, gasolene powered for more than a day is expensive and very inconvenient, most gensets fail over time from lack of use, automatic transfer switches vs manual are an ,expensive another item to fail at the worst time, utility supplied NG lines are often disrupted in high wind events from uprooted trees, diesel fuel has a limited "shelf life" but is the cheapest long use fuel IMO, and the luxury/cost of running a full house on a properly sized genset is in most cases a waste of money and mainly for bragging rights, .